./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-industry-pattern/array_shadowinit.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-industry-pattern/array_shadowinit.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 03931b69e9073178e54f20b91a2b2a66154a89c69758aa4d312927278c5c0104 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:37:46,985 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:37:46,987 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:37:47,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:37:47,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:37:47,025 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:37:47,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:37:47,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:37:47,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:37:47,033 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:37:47,034 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:37:47,036 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:37:47,037 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:37:47,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:37:47,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:37:47,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:37:47,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:37:47,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:37:47,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:37:47,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:37:47,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:37:47,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:37:47,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:37:47,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:37:47,060 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:37:47,061 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:37:47,061 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:37:47,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:37:47,063 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:37:47,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:37:47,065 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:37:47,066 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:37:47,067 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:37:47,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:37:47,070 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:37:47,070 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:37:47,071 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:37:47,072 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:37:47,072 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:37:47,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:37:47,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:37:47,076 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 22:37:47,106 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:37:47,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:37:47,107 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:37:47,107 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:37:47,107 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:37:47,108 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:37:47,108 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:37:47,108 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:37:47,108 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:37:47,108 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:37:47,109 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:37:47,109 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:37:47,109 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:37:47,110 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:37:47,110 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:37:47,110 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:37:47,111 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:37:47,111 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:37:47,111 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:37:47,112 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:37:47,112 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:37:47,112 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:37:47,112 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:37:47,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:37:47,113 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:37:47,113 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:37:47,113 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:37:47,113 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:37:47,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:37:47,114 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:37:47,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:37:47,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:37:47,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:37:47,115 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:37:47,115 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:37:47,115 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:37:47,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:37:47,115 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:37:47,116 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:37:47,116 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:37:47,116 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03931b69e9073178e54f20b91a2b2a66154a89c69758aa4d312927278c5c0104 [2021-11-12 22:37:47,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:37:47,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:37:47,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:37:47,434 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:37:47,435 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:37:47,436 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/array-industry-pattern/array_shadowinit.i [2021-11-12 22:37:47,534 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/data/2b2cd1cd5/87c15829f8c34850bd08ff6f358ac21b/FLAG697820f36 [2021-11-12 22:37:48,090 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:37:48,092 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/sv-benchmarks/c/array-industry-pattern/array_shadowinit.i [2021-11-12 22:37:48,106 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/data/2b2cd1cd5/87c15829f8c34850bd08ff6f358ac21b/FLAG697820f36 [2021-11-12 22:37:48,441 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/data/2b2cd1cd5/87c15829f8c34850bd08ff6f358ac21b [2021-11-12 22:37:48,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:37:48,447 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:37:48,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:37:48,451 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:37:48,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:37:48,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:37:48" (1/1) ... [2021-11-12 22:37:48,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@607e21b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:48, skipping insertion in model container [2021-11-12 22:37:48,460 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:37:48" (1/1) ... [2021-11-12 22:37:48,469 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:37:48,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:37:48,660 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/sv-benchmarks/c/array-industry-pattern/array_shadowinit.i[809,822] [2021-11-12 22:37:48,679 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:37:48,688 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:37:48,702 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/sv-benchmarks/c/array-industry-pattern/array_shadowinit.i[809,822] [2021-11-12 22:37:48,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:37:48,724 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:37:48,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:48 WrapperNode [2021-11-12 22:37:48,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:37:48,726 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:37:48,726 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:37:48,726 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:37:48,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:48" (1/1) ... [2021-11-12 22:37:48,742 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:48" (1/1) ... [2021-11-12 22:37:48,762 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:37:48,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:37:48,764 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:37:48,764 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:37:48,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:48" (1/1) ... [2021-11-12 22:37:48,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:48" (1/1) ... [2021-11-12 22:37:48,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:48" (1/1) ... [2021-11-12 22:37:48,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:48" (1/1) ... [2021-11-12 22:37:48,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:48" (1/1) ... [2021-11-12 22:37:48,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:48" (1/1) ... [2021-11-12 22:37:48,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:48" (1/1) ... [2021-11-12 22:37:48,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:37:48,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:37:48,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:37:48,789 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:37:48,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:48" (1/1) ... [2021-11-12 22:37:48,799 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:37:48,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:37:48,828 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:37:48,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:37:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 22:37:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:37:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-12 22:37:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:37:48,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:37:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-12 22:37:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:37:49,161 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:37:49,161 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-12 22:37:49,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:37:49 BoogieIcfgContainer [2021-11-12 22:37:49,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:37:49,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:37:49,167 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:37:49,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:37:49,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:37:48" (1/3) ... [2021-11-12 22:37:49,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b9f5a45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:37:49, skipping insertion in model container [2021-11-12 22:37:49,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:37:48" (2/3) ... [2021-11-12 22:37:49,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b9f5a45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:37:49, skipping insertion in model container [2021-11-12 22:37:49,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:37:49" (3/3) ... [2021-11-12 22:37:49,175 INFO L111 eAbstractionObserver]: Analyzing ICFG array_shadowinit.i [2021-11-12 22:37:49,181 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:37:49,182 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:37:49,238 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:37:49,248 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 22:37:49,248 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:37:49,264 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:49,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-12 22:37:49,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:37:49,271 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-12 22:37:49,272 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:37:49,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:37:49,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1969782628, now seen corresponding path program 1 times [2021-11-12 22:37:49,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:37:49,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771524911] [2021-11-12 22:37:49,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:37:49,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:37:49,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:37:49,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:37:49,483 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:37:49,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771524911] [2021-11-12 22:37:49,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771524911] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:37:49,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:37:49,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 22:37:49,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16822743] [2021-11-12 22:37:49,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:37:49,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:37:49,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:37:49,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:37:49,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:37:49,524 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:49,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:37:49,577 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2021-11-12 22:37:49,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:37:49,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-12 22:37:49,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:37:49,587 INFO L225 Difference]: With dead ends: 18 [2021-11-12 22:37:49,602 INFO L226 Difference]: Without dead ends: 9 [2021-11-12 22:37:49,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:37:49,610 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.72ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.09ms IncrementalHoareTripleChecker+Time [2021-11-12 22:37:49,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 13 Unknown, 0 Unchecked, 0.72ms Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 36.09ms Time] [2021-11-12 22:37:49,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-12 22:37:49,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-12 22:37:49,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:49,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2021-11-12 22:37:49,645 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2021-11-12 22:37:49,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:37:49,646 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-11-12 22:37:49,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:49,646 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2021-11-12 22:37:49,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-12 22:37:49,647 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:37:49,647 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:37:49,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 22:37:49,648 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:37:49,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:37:49,649 INFO L85 PathProgramCache]: Analyzing trace with hash -968964990, now seen corresponding path program 1 times [2021-11-12 22:37:49,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:37:49,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495591871] [2021-11-12 22:37:49,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:37:49,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:37:49,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:37:49,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:37:49,962 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:37:49,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495591871] [2021-11-12 22:37:49,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495591871] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:37:49,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606914200] [2021-11-12 22:37:49,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:37:49,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:37:49,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:37:49,966 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:37:49,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-12 22:37:50,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:37:50,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-12 22:37:50,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:37:50,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-12 22:37:50,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:37:50,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:37:50,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2021-11-12 22:37:50,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2021-11-12 22:37:50,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:37:50,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606914200] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:37:50,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [219589713] [2021-11-12 22:37:50,526 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-11-12 22:37:50,526 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:37:50,531 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:37:50,536 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:37:50,537 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:37:50,569 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:50,574 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:50,575 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:50,576 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:37:50,577 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:50,577 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:50,578 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:37:50,581 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:37:50,594 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_11|], 10=[|v_#valid_18|]} [2021-11-12 22:37:50,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:50,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:37:50,610 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:50,612 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:37:50,613 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:50,615 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:37:50,616 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:37:50,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:50,660 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:50,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:50,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:50,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:50,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:50,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:37:50,691 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:50,693 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:37:50,694 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:50,695 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:37:50,695 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:37:50,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:50,709 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:50,711 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:50,713 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:37:50,713 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:37:50,714 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:37:50,721 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:37:50,723 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:50,724 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:50,725 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:37:50,726 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:50,727 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:50,732 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:37:50,736 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:37:50,743 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_12|], 10=[|v_#valid_19|]} [2021-11-12 22:37:50,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:50,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:50,778 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:37:50,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:37:50,780 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:50,782 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:37:50,784 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:50,790 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:37:50,790 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:37:50,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:50,822 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:50,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:50,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:50,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:50,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:37:50,850 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:50,857 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:37:50,860 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:50,863 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:37:50,864 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:37:50,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:50,884 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:50,887 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:50,890 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:37:50,891 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:37:50,892 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:37:50,902 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:50,909 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:50,910 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:50,911 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:37:50,916 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-11-12 22:37:50,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:50,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:50,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:37:50,940 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:50,945 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:37:50,946 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:50,948 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:37:50,948 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:37:50,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:50,964 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:50,968 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:50,972 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-11-12 22:37:50,976 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:37:50,976 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:125, output treesize:121 [2021-11-12 22:37:50,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,116 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,138 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:51,143 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,148 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:51,149 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,150 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-12 22:37:51,152 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:51,153 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,154 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:37:51,160 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 275 [2021-11-12 22:37:51,166 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:51,170 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,174 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 254 [2021-11-12 22:37:51,180 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 312 [2021-11-12 22:37:51,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:51,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:51,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:51,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 56 [2021-11-12 22:37:51,219 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,222 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-12 22:37:51,223 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,224 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-12 22:37:51,224 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:37:51,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:51,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:51,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:37:51,245 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,247 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:37:51,248 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,249 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:37:51,250 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:37:51,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,284 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,300 INFO L180 QuantifierPusher]: treesize reduction 92, result has 75.3 percent of original size [2021-11-12 22:37:51,305 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 281 [2021-11-12 22:37:51,306 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:37:51,306 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:383, output treesize:281 [2021-11-12 22:37:51,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,370 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:37:51,373 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:51,373 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,374 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:37:51,375 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:37:51,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:37:51,382 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,382 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:37:51,383 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,383 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:37:51,383 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:37:51,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:51,386 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,388 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:51,389 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:37:51,389 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:37:51,389 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:37:51,395 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:37:51,397 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:37:51,402 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:37:51,853 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:37:51,854 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:37:51,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-11-12 22:37:51,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989669730] [2021-11-12 22:37:51,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:37:51,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-12 22:37:51,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:37:51,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-12 22:37:51,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-11-12 22:37:51,857 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:51,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:37:51,973 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2021-11-12 22:37:51,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 22:37:51,975 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-12 22:37:51,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:37:51,976 INFO L225 Difference]: With dead ends: 15 [2021-11-12 22:37:51,977 INFO L226 Difference]: Without dead ends: 13 [2021-11-12 22:37:51,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-11-12 22:37:51,981 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 15 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.31ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.60ms IncrementalHoareTripleChecker+Time [2021-11-12 22:37:51,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 19 Invalid, 62 Unknown, 0 Unchecked, 2.31ms Time], IncrementalHoareTripleChecker [11 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 53.60ms Time] [2021-11-12 22:37:51,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-12 22:37:51,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2021-11-12 22:37:51,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:51,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2021-11-12 22:37:51,986 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 7 [2021-11-12 22:37:51,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:37:51,986 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-11-12 22:37:51,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:51,987 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2021-11-12 22:37:51,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-12 22:37:51,988 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:37:51,988 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:37:52,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:37:52,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:37:52,195 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:37:52,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:37:52,196 INFO L85 PathProgramCache]: Analyzing trace with hash 43972795, now seen corresponding path program 1 times [2021-11-12 22:37:52,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:37:52,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834073461] [2021-11-12 22:37:52,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:37:52,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:37:52,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:37:52,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:37:52,296 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:37:52,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834073461] [2021-11-12 22:37:52,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834073461] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:37:52,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392897674] [2021-11-12 22:37:52,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:37:52,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:37:52,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:37:52,306 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:37:52,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-12 22:37:52,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:37:52,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 22:37:52,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:37:52,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:37:52,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:37:52,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:37:52,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392897674] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:37:52,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [391827076] [2021-11-12 22:37:52,505 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:37:52,505 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:37:52,506 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:37:52,506 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:37:52,506 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:37:52,516 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,518 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:52,518 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,519 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:37:52,521 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:52,522 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,522 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:37:52,529 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:37:52,535 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_14|], 10=[|v_#valid_21|]} [2021-11-12 22:37:52,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:52,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:37:52,544 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,544 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:37:52,545 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,546 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:37:52,546 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:37:52,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:52,552 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:52,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:52,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:52,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:52,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:37:52,570 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,573 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:37:52,574 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,575 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:37:52,575 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:37:52,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:52,580 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,583 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,585 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:37:52,585 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:37:52,585 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:37:52,590 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:37:52,592 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:52,592 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,593 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:37:52,595 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:52,598 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,601 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:37:52,604 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:37:52,607 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_15|], 10=[|v_#valid_22|]} [2021-11-12 22:37:52,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:52,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:52,622 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:37:52,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:37:52,623 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,625 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:37:52,629 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,631 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:37:52,632 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:37:52,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:52,639 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:52,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:52,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:52,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:37:52,658 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,666 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:37:52,667 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,668 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:37:52,669 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:37:52,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:52,674 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,676 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,678 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:37:52,679 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:37:52,679 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:37:52,683 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,686 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:52,687 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,688 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:37:52,691 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-11-12 22:37:52,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:52,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:52,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:37:52,706 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,708 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:37:52,709 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,710 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:37:52,710 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:37:52,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:52,717 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,719 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,721 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-11-12 22:37:52,722 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:37:52,722 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:132, output treesize:128 [2021-11-12 22:37:52,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:52,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:52,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:52,794 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,815 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:52,819 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,820 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:52,821 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,821 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:37:52,823 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:52,824 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,825 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-12 22:37:52,829 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:37:52,830 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:52,834 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,838 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 253 [2021-11-12 22:37:52,845 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 314 [2021-11-12 22:37:52,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:52,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:52,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:52,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 56 [2021-11-12 22:37:52,893 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,896 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-12 22:37:52,897 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,898 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-12 22:37:52,898 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:37:52,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:52,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:52,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:37:52,918 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,922 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:37:52,923 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,924 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:37:52,924 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:37:52,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:52,956 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:52,968 INFO L180 QuantifierPusher]: treesize reduction 97, result has 74.3 percent of original size [2021-11-12 22:37:52,973 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 281 [2021-11-12 22:37:52,974 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:37:52,975 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:388, output treesize:281 [2021-11-12 22:37:52,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:53,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:53,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:53,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:53,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:53,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:53,026 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:37:53,029 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:53,030 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:53,031 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:37:53,032 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:37:53,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:37:53,039 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:53,040 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:37:53,040 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:53,041 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:37:53,041 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:37:53,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:53,043 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:53,045 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:53,046 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:37:53,046 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:37:53,047 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:37:53,051 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:37:53,054 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:37:53,058 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:53,066 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-12 22:37:53,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:53,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:53,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:53,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:53,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:53,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:53,095 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:37:53,097 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:37:53,105 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:37:53,580 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:37:53,581 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:37:53,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2021-11-12 22:37:53,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278012912] [2021-11-12 22:37:53,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:37:53,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 22:37:53,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:37:53,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 22:37:53,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-11-12 22:37:53,583 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:53,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:37:53,635 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2021-11-12 22:37:53,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:37:53,637 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-12 22:37:53,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:37:53,637 INFO L225 Difference]: With dead ends: 27 [2021-11-12 22:37:53,638 INFO L226 Difference]: Without dead ends: 18 [2021-11-12 22:37:53,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-11-12 22:37:53,639 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.84ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.81ms IncrementalHoareTripleChecker+Time [2021-11-12 22:37:53,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 18 Invalid, 34 Unknown, 0 Unchecked, 0.84ms Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 32.81ms Time] [2021-11-12 22:37:53,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-12 22:37:53,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 12. [2021-11-12 22:37:53,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:53,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2021-11-12 22:37:53,645 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2021-11-12 22:37:53,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:37:53,645 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-11-12 22:37:53,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:53,646 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2021-11-12 22:37:53,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-12 22:37:53,646 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:37:53,646 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:37:53,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-12 22:37:53,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:37:53,874 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:37:53,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:37:53,875 INFO L85 PathProgramCache]: Analyzing trace with hash -812263007, now seen corresponding path program 2 times [2021-11-12 22:37:53,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:37:53,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685888495] [2021-11-12 22:37:53,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:37:53,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:37:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:37:54,046 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:37:54,047 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:37:54,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685888495] [2021-11-12 22:37:54,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685888495] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:37:54,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166485224] [2021-11-12 22:37:54,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 22:37:54,048 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:37:54,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:37:54,050 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:37:54,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-12 22:37:54,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-12 22:37:54,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:37:54,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-12 22:37:54,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:37:54,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-12 22:37:54,331 INFO L354 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2021-11-12 22:37:54,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 32 [2021-11-12 22:37:54,369 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:37:54,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:37:54,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2021-11-12 22:37:54,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 40 [2021-11-12 22:37:54,683 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:37:54,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166485224] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:37:54,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [893984763] [2021-11-12 22:37:54,686 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:37:54,687 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:37:54,687 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:37:54,687 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:37:54,687 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:37:54,702 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:54,703 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:54,704 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:54,705 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:37:54,706 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:54,706 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:54,707 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:37:54,709 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:37:54,711 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_17|], 10=[|v_#valid_24|]} [2021-11-12 22:37:54,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:54,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:37:54,721 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:54,721 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:37:54,722 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:54,722 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:37:54,723 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:37:54,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:54,728 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:54,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:54,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:54,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:54,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:54,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:37:54,744 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:54,746 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:37:54,746 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:54,747 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:37:54,747 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:37:54,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:54,751 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:54,752 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:54,753 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:37:54,754 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:37:54,754 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:37:54,759 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:37:54,760 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:54,761 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:54,761 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:37:54,764 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:54,765 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:54,766 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:37:54,768 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:37:54,772 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_18|], 10=[|v_#valid_25|]} [2021-11-12 22:37:54,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:54,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:54,788 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:37:54,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:37:54,789 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:54,791 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:37:54,791 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:54,792 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:37:54,792 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:37:54,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:54,797 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:54,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:54,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:54,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:54,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:37:54,812 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:54,815 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:37:54,816 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:54,816 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:37:54,817 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:37:54,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:54,822 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:54,824 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:54,825 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:37:54,826 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:37:54,826 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:37:54,832 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:54,834 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:54,834 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:54,835 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:37:54,838 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-11-12 22:37:54,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:54,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:54,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:37:54,853 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:54,855 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:37:54,856 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:54,856 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:37:54,857 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:37:54,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:54,862 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:54,865 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:54,867 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-11-12 22:37:54,868 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:37:54,868 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:125, output treesize:121 [2021-11-12 22:37:54,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:54,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:54,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:54,935 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:54,944 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:54,947 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:54,949 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:54,949 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:54,950 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-12 22:37:54,951 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:54,952 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:54,952 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:37:54,956 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 275 [2021-11-12 22:37:54,958 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:54,978 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:54,982 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 254 [2021-11-12 22:37:54,986 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 312 [2021-11-12 22:37:55,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:55,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:55,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:37:55,012 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:55,014 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:37:55,014 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:55,015 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:37:55,015 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:37:55,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:55,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:55,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:55,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 56 [2021-11-12 22:37:55,039 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:55,041 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-12 22:37:55,042 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:55,043 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-12 22:37:55,043 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:37:55,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:55,077 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:55,087 INFO L180 QuantifierPusher]: treesize reduction 94, result has 74.9 percent of original size [2021-11-12 22:37:55,095 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 281 [2021-11-12 22:37:55,096 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:37:55,096 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:383, output treesize:281 [2021-11-12 22:37:55,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:55,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:55,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:55,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:55,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:55,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:55,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:55,152 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:37:55,153 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:55,154 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:55,154 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:37:55,156 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:37:55,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:37:55,164 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:55,165 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:37:55,166 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:55,166 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:37:55,167 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:37:55,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:55,169 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:55,171 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:55,172 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:37:55,173 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:37:55,173 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:37:55,178 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:37:55,180 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:37:55,184 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:55,187 INFO L185 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size 71 [2021-11-12 22:37:55,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:55,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:55,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:55,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:55,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:55,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:55,216 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:55,220 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-12 22:37:55,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:55,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:55,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:55,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:55,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:55,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:55,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:55,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:55,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:55,269 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:37:55,272 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:37:55,279 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:37:55,828 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:37:55,829 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:37:55,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2021-11-12 22:37:55,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105535793] [2021-11-12 22:37:55,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:37:55,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-12 22:37:55,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:37:55,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-12 22:37:55,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2021-11-12 22:37:55,830 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 19 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:56,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:37:56,207 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2021-11-12 22:37:56,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-12 22:37:56,208 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-12 22:37:56,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:37:56,208 INFO L225 Difference]: With dead ends: 30 [2021-11-12 22:37:56,209 INFO L226 Difference]: Without dead ends: 18 [2021-11-12 22:37:56,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=198, Invalid=992, Unknown=0, NotChecked=0, Total=1190 [2021-11-12 22:37:56,210 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 35 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 93.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.98ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 122.95ms IncrementalHoareTripleChecker+Time [2021-11-12 22:37:56,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 23 Invalid, 156 Unknown, 0 Unchecked, 2.98ms Time], IncrementalHoareTripleChecker [42 Valid, 84 Invalid, 0 Unknown, 30 Unchecked, 122.95ms Time] [2021-11-12 22:37:56,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-12 22:37:56,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2021-11-12 22:37:56,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:56,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-11-12 22:37:56,215 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11 [2021-11-12 22:37:56,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:37:56,215 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-11-12 22:37:56,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:56,216 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-11-12 22:37:56,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-12 22:37:56,216 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:37:56,216 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1] [2021-11-12 22:37:56,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-12 22:37:56,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-11-12 22:37:56,429 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:37:56,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:37:56,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1296967390, now seen corresponding path program 3 times [2021-11-12 22:37:56,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:37:56,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563140091] [2021-11-12 22:37:56,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:37:56,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:37:56,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:37:56,624 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:37:56,625 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:37:56,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563140091] [2021-11-12 22:37:56,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563140091] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:37:56,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106679496] [2021-11-12 22:37:56,625 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-12 22:37:56,626 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:37:56,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:37:56,627 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:37:56,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-12 22:37:56,672 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-12 22:37:56,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:37:56,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-12 22:37:56,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:37:56,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-12 22:37:56,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 26 [2021-11-12 22:37:56,879 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:37:56,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:37:56,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:37:56,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:37:57,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:37:57,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:37:57,056 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:37:57,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106679496] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:37:57,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1865085455] [2021-11-12 22:37:57,061 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:37:57,062 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:37:57,062 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:37:57,062 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:37:57,062 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:37:57,068 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:57,069 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:57,069 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:57,070 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:37:57,070 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:57,071 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:57,071 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:37:57,073 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:37:57,077 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_20|], 10=[|v_#valid_27|]} [2021-11-12 22:37:57,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:57,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:37:57,084 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:57,085 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:37:57,085 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:57,086 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:37:57,086 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:37:57,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:57,089 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:57,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:57,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:57,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:57,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:57,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:37:57,101 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:57,102 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:37:57,103 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:57,104 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:37:57,104 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:37:57,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:57,107 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:57,109 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:57,110 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:37:57,110 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:37:57,111 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:37:57,115 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:37:57,116 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:57,116 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:57,117 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:37:57,118 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:57,118 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:57,119 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:37:57,120 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:37:57,123 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_21|], 10=[|v_#valid_28|]} [2021-11-12 22:37:57,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:57,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:57,135 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:37:57,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:37:57,136 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:57,138 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:37:57,138 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:57,139 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:37:57,139 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:37:57,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:57,144 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:57,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:57,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:57,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:57,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:37:57,157 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:57,159 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:37:57,160 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:57,160 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:37:57,161 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:37:57,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:57,164 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:57,166 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:57,167 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:37:57,168 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:37:57,168 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:37:57,170 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:57,173 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:57,174 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:57,174 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 22:37:57,176 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-11-12 22:37:57,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:57,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:57,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-12 22:37:57,190 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:57,192 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:37:57,192 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:57,193 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:37:57,193 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:37:57,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:57,197 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:57,199 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:57,201 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 112 [2021-11-12 22:37:57,201 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:37:57,202 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:116, output treesize:112 [2021-11-12 22:37:57,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:57,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:57,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:57,259 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:57,268 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:57,271 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:57,272 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:57,274 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:57,275 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-12 22:37:57,276 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:57,277 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:57,277 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:37:57,281 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 266 [2021-11-12 22:37:57,282 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:57,284 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:57,287 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 245 [2021-11-12 22:37:57,292 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 303 [2021-11-12 22:37:57,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:57,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:57,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:57,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2021-11-12 22:37:57,320 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:57,322 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:37:57,323 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:57,324 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:37:57,324 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:37:57,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:57,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:57,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:37:57,343 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:57,345 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:37:57,346 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:57,347 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:37:57,347 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:37:57,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:57,373 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:57,383 INFO L180 QuantifierPusher]: treesize reduction 92, result has 74.9 percent of original size [2021-11-12 22:37:57,387 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:37:57,388 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:37:57,389 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:374, output treesize:274 [2021-11-12 22:37:57,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:57,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:57,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:57,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:57,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:57,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:57,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:57,435 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:37:57,437 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:57,438 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:57,438 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:37:57,440 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:37:57,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:37:57,446 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:57,446 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:37:57,447 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:57,452 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:37:57,453 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:37:57,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:57,455 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:57,456 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:57,457 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:37:57,458 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:37:57,458 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:37:57,462 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:37:57,464 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:37:57,469 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:57,472 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-12 22:37:57,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:57,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:57,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:57,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:57,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:57,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:57,492 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:37:57,494 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:37:57,501 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:37:58,038 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:37:58,038 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:37:58,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 14 [2021-11-12 22:37:58,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163651738] [2021-11-12 22:37:58,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:37:58,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:37:58,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:37:58,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:37:58,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2021-11-12 22:37:58,040 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:58,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:37:58,257 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-11-12 22:37:58,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:37:58,258 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-12 22:37:58,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:37:58,259 INFO L225 Difference]: With dead ends: 23 [2021-11-12 22:37:58,259 INFO L226 Difference]: Without dead ends: 21 [2021-11-12 22:37:58,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 30 SyntacticMatches, 6 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=91, Invalid=509, Unknown=0, NotChecked=0, Total=600 [2021-11-12 22:37:58,260 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 13 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 93.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.62ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 111.35ms IncrementalHoareTripleChecker+Time [2021-11-12 22:37:58,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 36 Invalid, 149 Unknown, 0 Unchecked, 1.62ms Time], IncrementalHoareTripleChecker [16 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 111.35ms Time] [2021-11-12 22:37:58,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-12 22:37:58,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2021-11-12 22:37:58,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:58,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-11-12 22:37:58,266 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 15 [2021-11-12 22:37:58,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:37:58,267 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-11-12 22:37:58,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:58,267 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-11-12 22:37:58,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-12 22:37:58,268 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:37:58,268 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1] [2021-11-12 22:37:58,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-12 22:37:58,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:37:58,482 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:37:58,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:37:58,483 INFO L85 PathProgramCache]: Analyzing trace with hash -424927205, now seen corresponding path program 4 times [2021-11-12 22:37:58,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:37:58,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248615998] [2021-11-12 22:37:58,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:37:58,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:37:58,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:37:58,574 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:37:58,574 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:37:58,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248615998] [2021-11-12 22:37:58,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248615998] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:37:58,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081401417] [2021-11-12 22:37:58,575 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-12 22:37:58,575 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:37:58,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:37:58,576 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:37:58,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-12 22:37:58,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:37:58,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-12 22:37:58,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:37:58,764 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:37:58,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:37:58,819 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:37:58,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081401417] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:37:58,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1430820626] [2021-11-12 22:37:58,822 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:37:58,822 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:37:58,822 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:37:58,823 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:37:58,823 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:37:58,828 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:58,828 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:58,829 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:58,829 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:37:58,830 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:58,831 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:58,831 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:37:58,832 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:37:58,834 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_23|], 10=[|v_#valid_30|]} [2021-11-12 22:37:58,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:58,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:37:58,841 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:58,842 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:37:58,842 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:58,849 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:37:58,849 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:37:58,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:58,852 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:58,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:58,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:58,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:58,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:58,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:37:58,863 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:58,865 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:37:58,866 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:58,866 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:37:58,867 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:37:58,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:58,869 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:58,871 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:58,872 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:37:58,872 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:37:58,873 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:37:58,877 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:37:58,878 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:58,879 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:58,879 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:37:58,880 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:58,880 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:58,881 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:37:58,883 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:37:58,885 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_24|], 10=[|v_#valid_31|]} [2021-11-12 22:37:58,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:58,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:58,898 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:37:58,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:37:58,899 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:58,900 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:37:58,900 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:58,901 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:37:58,901 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:37:58,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:58,905 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:58,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:58,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:58,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:58,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:37:58,917 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:58,919 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:37:58,920 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:58,920 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:37:58,921 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:37:58,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:58,925 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:58,926 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:58,928 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:37:58,928 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:37:58,929 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:37:58,931 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:58,933 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:58,934 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:58,934 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:37:58,936 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-11-12 22:37:58,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:58,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:58,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:37:58,948 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:58,949 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:37:58,950 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:58,951 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:37:58,951 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:37:58,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:58,955 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:58,957 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:58,959 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-11-12 22:37:58,960 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:37:58,960 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:132, output treesize:128 [2021-11-12 22:37:58,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:58,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:58,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:59,003 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:59,010 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:59,012 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:59,013 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:59,014 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:59,015 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-12 22:37:59,015 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:59,016 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:59,017 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:37:59,019 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:37:59,020 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:59,022 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:59,025 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 253 [2021-11-12 22:37:59,028 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 314 [2021-11-12 22:37:59,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:59,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:59,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:59,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 56 [2021-11-12 22:37:59,054 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:59,056 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-12 22:37:59,057 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:59,057 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-12 22:37:59,058 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:37:59,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:59,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:37:59,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:37:59,074 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:59,075 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:37:59,076 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:59,077 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:37:59,077 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:37:59,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:59,096 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:59,105 INFO L180 QuantifierPusher]: treesize reduction 99, result has 73.9 percent of original size [2021-11-12 22:37:59,108 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 281 [2021-11-12 22:37:59,109 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:37:59,110 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:388, output treesize:281 [2021-11-12 22:37:59,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:59,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:59,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:59,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:59,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:59,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:59,144 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:37:59,146 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:37:59,146 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:59,147 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:37:59,148 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:37:59,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:37:59,155 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:59,155 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:37:59,156 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:59,156 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:37:59,156 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:37:59,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:59,158 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:59,159 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:59,160 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:37:59,160 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:37:59,161 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:37:59,165 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:37:59,166 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:37:59,169 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:59,171 INFO L185 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size 71 [2021-11-12 22:37:59,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:59,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:59,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:59,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:59,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:59,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:59,192 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:37:59,196 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-12 22:37:59,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:59,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:59,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:59,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:59,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:59,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:59,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:59,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:59,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:37:59,239 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:37:59,241 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:37:59,248 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:37:59,722 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:37:59,722 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:37:59,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 16 [2021-11-12 22:37:59,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335668161] [2021-11-12 22:37:59,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:37:59,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-12 22:37:59,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:37:59,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-12 22:37:59,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2021-11-12 22:37:59,724 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:59,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:37:59,820 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2021-11-12 22:37:59,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-12 22:37:59,822 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-12 22:37:59,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:37:59,822 INFO L225 Difference]: With dead ends: 41 [2021-11-12 22:37:59,823 INFO L226 Difference]: Without dead ends: 26 [2021-11-12 22:37:59,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2021-11-12 22:37:59,824 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 28 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.00ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.82ms IncrementalHoareTripleChecker+Time [2021-11-12 22:37:59,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 28 Invalid, 73 Unknown, 0 Unchecked, 1.00ms Time], IncrementalHoareTripleChecker [22 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 56.82ms Time] [2021-11-12 22:37:59,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-12 22:37:59,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 20. [2021-11-12 22:37:59,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:59,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-11-12 22:37:59,829 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 18 [2021-11-12 22:37:59,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:37:59,829 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-11-12 22:37:59,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:37:59,830 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-11-12 22:37:59,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-12 22:37:59,830 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:37:59,831 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1] [2021-11-12 22:37:59,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-12 22:38:00,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2021-11-12 22:38:00,031 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:38:00,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:00,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1950268161, now seen corresponding path program 5 times [2021-11-12 22:38:00,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:38:00,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123113922] [2021-11-12 22:38:00,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:00,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:38:00,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:00,254 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:00,255 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:38:00,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123113922] [2021-11-12 22:38:00,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123113922] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:38:00,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63729196] [2021-11-12 22:38:00,255 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 22:38:00,255 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:38:00,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:38:00,257 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:38:00,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-12 22:38:00,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-12 22:38:00,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:38:00,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-12 22:38:00,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:38:00,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-12 22:38:00,670 INFO L354 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2021-11-12 22:38:00,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 32 [2021-11-12 22:38:00,707 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:00,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:38:01,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2021-11-12 22:38:01,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 44 [2021-11-12 22:38:01,338 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:01,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63729196] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:38:01,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [520342616] [2021-11-12 22:38:01,341 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:38:01,341 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:38:01,342 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:38:01,342 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:38:01,342 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:38:01,346 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:01,347 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:01,347 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:01,348 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:38:01,348 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:01,349 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:01,349 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:38:01,350 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:38:01,353 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_26|], 10=[|v_#valid_33|]} [2021-11-12 22:38:01,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:01,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:38:01,360 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:01,361 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:38:01,361 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:01,362 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:38:01,362 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:01,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:01,365 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:01,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:01,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:01,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:01,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:01,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:38:01,376 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:01,378 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:38:01,379 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:01,380 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:38:01,380 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:01,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:01,383 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:01,384 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:01,385 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:38:01,385 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:01,386 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:38:01,389 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:38:01,390 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:01,391 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:01,392 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:38:01,392 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:01,393 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:01,393 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:38:01,394 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:38:01,397 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_27|], 10=[|v_#valid_34|]} [2021-11-12 22:38:01,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:01,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:01,412 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:38:01,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:38:01,413 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:01,414 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:01,414 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:01,415 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:01,415 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:01,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:01,419 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:01,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:01,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:01,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:01,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:38:01,431 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:01,432 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:38:01,433 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:01,433 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:38:01,434 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:01,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:01,437 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:01,438 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:01,439 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:38:01,440 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:01,440 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:38:01,442 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:01,444 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:01,444 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:01,445 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:38:01,446 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-11-12 22:38:01,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:01,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:01,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:38:01,457 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:01,458 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:01,459 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:01,459 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:01,460 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:01,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:01,473 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:01,474 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:01,475 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-11-12 22:38:01,475 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:01,475 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:132, output treesize:128 [2021-11-12 22:38:01,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:01,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:01,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:01,521 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:01,528 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:01,530 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:01,531 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:01,532 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:01,533 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:38:01,534 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:01,534 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:01,535 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-12 22:38:01,538 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:38:01,538 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:01,541 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:01,543 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 253 [2021-11-12 22:38:01,546 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 314 [2021-11-12 22:38:01,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:01,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:01,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:01,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 56 [2021-11-12 22:38:01,575 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:01,577 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-12 22:38:01,578 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:01,578 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-12 22:38:01,579 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:01,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:01,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:01,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:38:01,594 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:01,595 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:01,595 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:01,596 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:01,596 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:01,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:01,620 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:01,629 INFO L180 QuantifierPusher]: treesize reduction 99, result has 73.9 percent of original size [2021-11-12 22:38:01,633 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 281 [2021-11-12 22:38:01,634 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:38:01,634 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:388, output treesize:281 [2021-11-12 22:38:01,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:01,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:01,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:01,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:01,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:01,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:01,677 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:38:01,678 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:01,679 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:01,679 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:01,680 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:38:01,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:38:01,687 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:01,687 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:38:01,688 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:01,688 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:38:01,689 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:01,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:01,691 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:01,692 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:01,693 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:38:01,693 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:01,694 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:38:01,698 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:38:01,699 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:38:01,702 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:01,704 INFO L185 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size 71 [2021-11-12 22:38:01,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:01,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:01,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:01,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:01,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:01,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:01,726 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:01,729 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-12 22:38:01,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:01,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:01,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:01,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:01,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:01,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:01,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:01,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:01,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:01,776 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:38:01,778 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:38:01,784 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:38:02,446 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:38:02,446 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:38:02,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 31 [2021-11-12 22:38:02,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736238829] [2021-11-12 22:38:02,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:38:02,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-12 22:38:02,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:38:02,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-12 22:38:02,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1122, Unknown=0, NotChecked=0, Total=1260 [2021-11-12 22:38:02,449 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 31 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 31 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:03,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:03,289 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2021-11-12 22:38:03,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-12 22:38:03,289 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 31 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-12 22:38:03,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:03,290 INFO L225 Difference]: With dead ends: 41 [2021-11-12 22:38:03,290 INFO L226 Difference]: Without dead ends: 26 [2021-11-12 22:38:03,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=340, Invalid=2522, Unknown=0, NotChecked=0, Total=2862 [2021-11-12 22:38:03,293 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 39 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 205.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.70ms SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 250.44ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:03,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 84 Invalid, 381 Unknown, 0 Unchecked, 2.70ms Time], IncrementalHoareTripleChecker [66 Valid, 259 Invalid, 0 Unknown, 56 Unchecked, 250.44ms Time] [2021-11-12 22:38:03,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-12 22:38:03,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2021-11-12 22:38:03,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:03,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2021-11-12 22:38:03,299 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 19 [2021-11-12 22:38:03,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:03,300 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-11-12 22:38:03,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 31 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:03,300 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2021-11-12 22:38:03,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-12 22:38:03,301 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:03,301 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1] [2021-11-12 22:38:03,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-12 22:38:03,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:38:03,514 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:38:03,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:03,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1951681086, now seen corresponding path program 6 times [2021-11-12 22:38:03,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:38:03,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621020938] [2021-11-12 22:38:03,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:03,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:38:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:03,841 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:03,842 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:38:03,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621020938] [2021-11-12 22:38:03,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621020938] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:38:03,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808406944] [2021-11-12 22:38:03,842 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-12 22:38:03,842 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:38:03,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:38:03,844 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:38:03,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-12 22:38:03,899 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-12 22:38:03,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:38:03,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-12 22:38:03,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:38:03,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-12 22:38:04,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 26 [2021-11-12 22:38:04,269 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:04,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:38:04,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:38:04,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:38:04,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:38:04,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:38:04,497 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:04,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808406944] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:38:04,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1667984734] [2021-11-12 22:38:04,499 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:38:04,499 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:38:04,499 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:38:04,500 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:38:04,500 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:38:04,503 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:04,503 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:04,504 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:04,504 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:38:04,505 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:04,505 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:04,505 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:38:04,506 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:38:04,508 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_29|], 10=[|v_#valid_36|]} [2021-11-12 22:38:04,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:04,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:38:04,513 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:04,514 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:38:04,514 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:04,515 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:38:04,515 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:04,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:04,517 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:04,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:04,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:04,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:04,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:04,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:38:04,526 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:04,527 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:38:04,527 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:04,528 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:38:04,528 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:04,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:04,530 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:04,531 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:04,532 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:38:04,532 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:04,532 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:38:04,535 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:38:04,536 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:04,536 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:04,537 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:38:04,537 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:04,537 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:04,538 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:38:04,539 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:38:04,541 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_30|], 10=[|v_#valid_37|]} [2021-11-12 22:38:04,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:04,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:04,552 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:38:04,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:38:04,553 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:04,554 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:04,554 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:04,555 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:04,555 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:04,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:04,558 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:04,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:04,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:04,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:04,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:38:04,569 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:04,570 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:38:04,571 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:04,571 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:38:04,572 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:04,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:04,575 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:04,576 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:04,577 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:38:04,577 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:04,578 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:38:04,580 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:04,581 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:04,582 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:04,582 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 22:38:04,583 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-12 22:38:04,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:04,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:04,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-12 22:38:04,593 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:04,594 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:38:04,595 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:04,595 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:38:04,595 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:04,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:04,599 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:04,600 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:04,601 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-12 22:38:04,602 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:04,602 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:123, output treesize:119 [2021-11-12 22:38:04,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:04,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:04,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:04,633 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:04,639 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:04,641 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:04,642 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:04,642 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:04,643 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:38:04,644 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:04,644 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:04,645 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-12 22:38:04,647 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 271 [2021-11-12 22:38:04,647 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:04,649 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:04,652 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 250 [2021-11-12 22:38:04,654 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 308 [2021-11-12 22:38:04,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:04,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:04,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:38:04,673 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:04,674 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:04,674 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:04,675 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:04,675 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:04,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:04,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:04,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:04,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2021-11-12 22:38:04,690 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:04,691 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:38:04,692 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:04,692 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:38:04,693 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:04,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:04,710 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:04,717 INFO L180 QuantifierPusher]: treesize reduction 97, result has 73.9 percent of original size [2021-11-12 22:38:04,719 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:38:04,720 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:38:04,720 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:379, output treesize:274 [2021-11-12 22:38:04,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:04,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:04,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:04,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:04,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:04,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:04,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:04,754 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:38:04,755 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:04,756 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:04,756 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:04,757 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:38:04,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:38:04,767 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:04,768 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:38:04,768 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:04,768 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:38:04,769 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:04,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:04,771 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:04,771 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:04,772 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:38:04,773 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:04,774 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:38:04,778 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:38:04,779 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:38:04,781 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:04,783 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-12 22:38:04,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:04,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:04,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:04,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:04,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:04,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:04,799 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:38:04,801 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:38:04,809 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:38:05,233 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:38:05,233 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:38:05,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 20 [2021-11-12 22:38:05,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910319483] [2021-11-12 22:38:05,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:38:05,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-12 22:38:05,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:38:05,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-12 22:38:05,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-11-12 22:38:05,236 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 20 states, 20 states have (on average 2.0) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:05,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:05,529 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2021-11-12 22:38:05,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-12 22:38:05,529 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.0) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-12 22:38:05,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:05,530 INFO L225 Difference]: With dead ends: 31 [2021-11-12 22:38:05,530 INFO L226 Difference]: Without dead ends: 29 [2021-11-12 22:38:05,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 52 SyntacticMatches, 6 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=121, Invalid=935, Unknown=0, NotChecked=0, Total=1056 [2021-11-12 22:38:05,531 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 16 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 134.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.44ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 172.66ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:05,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 85 Invalid, 337 Unknown, 0 Unchecked, 1.44ms Time], IncrementalHoareTripleChecker [25 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 172.66ms Time] [2021-11-12 22:38:05,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-12 22:38:05,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2021-11-12 22:38:05,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:05,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-11-12 22:38:05,537 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 23 [2021-11-12 22:38:05,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:05,538 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-11-12 22:38:05,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.0) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:05,538 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-11-12 22:38:05,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-12 22:38:05,539 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:05,539 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1] [2021-11-12 22:38:05,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-12 22:38:05,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:38:05,758 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:38:05,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:05,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1554153605, now seen corresponding path program 7 times [2021-11-12 22:38:05,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:38:05,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089363576] [2021-11-12 22:38:05,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:05,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:38:05,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:05,864 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 27 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:05,864 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:38:05,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089363576] [2021-11-12 22:38:05,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089363576] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:38:05,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933223715] [2021-11-12 22:38:05,865 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-12 22:38:05,865 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:38:05,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:38:05,866 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:38:05,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-12 22:38:05,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:05,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-12 22:38:05,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:38:06,117 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 40 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:06,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:38:06,183 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 40 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:06,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933223715] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:38:06,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [689779068] [2021-11-12 22:38:06,185 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:38:06,185 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:38:06,186 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:38:06,186 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:38:06,186 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:38:06,195 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:06,196 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:06,196 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:06,197 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:38:06,197 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:06,197 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:06,197 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:38:06,198 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:38:06,200 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_32|], 10=[|v_#valid_39|]} [2021-11-12 22:38:06,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:06,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:38:06,215 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:06,215 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:38:06,215 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:06,216 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:38:06,216 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:06,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:06,218 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:06,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:06,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:06,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:06,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:06,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:38:06,227 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:06,228 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:38:06,228 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:06,229 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:38:06,229 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:06,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:06,234 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:06,235 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:06,235 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:38:06,236 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:06,236 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:38:06,242 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:38:06,243 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:06,244 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:06,244 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:38:06,244 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:06,245 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:06,245 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:38:06,247 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:38:06,248 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_33|], 10=[|v_#valid_40|]} [2021-11-12 22:38:06,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:06,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:06,259 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:38:06,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:38:06,260 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:06,261 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:06,261 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:06,262 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:06,262 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:06,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:06,265 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:06,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:06,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:06,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:06,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:38:06,276 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:06,278 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:38:06,278 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:06,279 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:38:06,279 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:06,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:06,282 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:06,283 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:06,285 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:38:06,285 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:06,285 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:38:06,287 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:06,290 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:06,290 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:06,291 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:38:06,292 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-11-12 22:38:06,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:06,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:06,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:38:06,301 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:06,302 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:06,303 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:06,303 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:06,303 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:06,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:06,312 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:06,313 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:06,314 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-11-12 22:38:06,314 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:06,314 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:132, output treesize:128 [2021-11-12 22:38:06,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:06,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:06,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:06,352 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:06,360 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:06,362 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:06,363 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:06,363 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:06,364 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:38:06,364 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:06,365 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:06,365 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-12 22:38:06,368 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:38:06,368 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:06,370 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:06,372 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 253 [2021-11-12 22:38:06,375 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 314 [2021-11-12 22:38:06,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:06,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:06,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:38:06,400 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:06,403 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:06,403 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:06,404 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:06,404 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:06,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:06,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:06,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:06,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 56 [2021-11-12 22:38:06,419 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:06,421 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-12 22:38:06,421 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:06,422 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-12 22:38:06,422 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:06,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:06,468 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:06,474 INFO L180 QuantifierPusher]: treesize reduction 97, result has 74.3 percent of original size [2021-11-12 22:38:06,477 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 281 [2021-11-12 22:38:06,478 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:38:06,478 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:388, output treesize:281 [2021-11-12 22:38:06,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:06,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:06,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:06,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:06,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:06,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:06,519 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:38:06,520 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:06,521 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:06,521 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:06,522 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:38:06,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:38:06,527 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:06,528 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:38:06,528 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:06,528 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:38:06,529 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:06,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:06,530 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:06,531 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:06,532 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:38:06,532 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:06,532 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:38:06,536 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:38:06,538 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:38:06,540 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:06,542 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-12 22:38:06,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:06,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:06,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:06,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:06,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:06,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:06,557 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:38:06,559 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:38:06,572 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:38:07,014 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:38:07,014 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:38:07,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 22 [2021-11-12 22:38:07,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390074597] [2021-11-12 22:38:07,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:38:07,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-12 22:38:07,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:38:07,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-12 22:38:07,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=565, Unknown=0, NotChecked=0, Total=702 [2021-11-12 22:38:07,017 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 22 states, 22 states have (on average 2.227272727272727) internal successors, (49), 22 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:07,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:07,136 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2021-11-12 22:38:07,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:38:07,137 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.227272727272727) internal successors, (49), 22 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-12 22:38:07,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:07,137 INFO L225 Difference]: With dead ends: 55 [2021-11-12 22:38:07,138 INFO L226 Difference]: Without dead ends: 34 [2021-11-12 22:38:07,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=202, Invalid=790, Unknown=0, NotChecked=0, Total=992 [2021-11-12 22:38:07,139 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 36 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.71ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66.93ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:07,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 42 Invalid, 108 Unknown, 0 Unchecked, 0.71ms Time], IncrementalHoareTripleChecker [31 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 66.93ms Time] [2021-11-12 22:38:07,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-12 22:38:07,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2021-11-12 22:38:07,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:07,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2021-11-12 22:38:07,145 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 26 [2021-11-12 22:38:07,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:07,145 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2021-11-12 22:38:07,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.227272727272727) internal successors, (49), 22 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:07,145 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2021-11-12 22:38:07,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-12 22:38:07,146 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:07,146 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1] [2021-11-12 22:38:07,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-12 22:38:07,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable187 [2021-11-12 22:38:07,368 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:38:07,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:07,369 INFO L85 PathProgramCache]: Analyzing trace with hash -550382495, now seen corresponding path program 8 times [2021-11-12 22:38:07,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:38:07,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885970196] [2021-11-12 22:38:07,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:07,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:38:07,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:07,612 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:07,612 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:38:07,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885970196] [2021-11-12 22:38:07,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885970196] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:38:07,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203210035] [2021-11-12 22:38:07,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 22:38:07,613 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:38:07,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:38:07,618 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:38:07,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-12 22:38:07,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-11-12 22:38:07,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:38:07,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-12 22:38:07,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:38:07,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-12 22:38:08,211 INFO L354 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2021-11-12 22:38:08,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 32 [2021-11-12 22:38:08,261 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 35 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:08,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:38:09,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2021-11-12 22:38:09,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 40 [2021-11-12 22:38:09,566 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 30 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:09,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203210035] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:38:09,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [283691424] [2021-11-12 22:38:09,568 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:38:09,568 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:38:09,568 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:38:09,568 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:38:09,568 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:38:09,571 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:09,571 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:09,572 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:09,572 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:38:09,572 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:09,573 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:09,573 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:38:09,574 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:38:09,578 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_35|], 10=[|v_#valid_42|]} [2021-11-12 22:38:09,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:09,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:38:09,585 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:09,585 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:38:09,586 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:09,586 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:38:09,586 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:09,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:09,588 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:09,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:09,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:09,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:09,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:09,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:38:09,598 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:09,599 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:38:09,599 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:09,600 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:38:09,600 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:09,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:09,603 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:09,603 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:09,604 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:38:09,604 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:09,605 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:38:09,607 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:38:09,608 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:09,609 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:09,609 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:38:09,609 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:09,610 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:09,610 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:38:09,611 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:38:09,614 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_36|], 10=[|v_#valid_43|]} [2021-11-12 22:38:09,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:09,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:09,624 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:38:09,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:38:09,625 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:09,626 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:09,626 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:09,626 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:09,627 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:09,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:09,630 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:09,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:09,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:09,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:09,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:38:09,640 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:09,642 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:38:09,642 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:09,642 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:38:09,643 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:09,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:09,646 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:09,647 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:09,648 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:38:09,648 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:09,648 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:38:09,650 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:09,652 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:09,652 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:09,653 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 22:38:09,654 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-11-12 22:38:09,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:09,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:09,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-12 22:38:09,664 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:09,665 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:38:09,665 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:09,665 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:38:09,666 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:09,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:09,669 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:09,670 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:09,671 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 112 [2021-11-12 22:38:09,672 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:09,672 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:116, output treesize:112 [2021-11-12 22:38:09,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:09,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:09,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:09,701 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:09,706 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:09,708 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:09,709 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:09,710 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:09,710 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:38:09,711 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:09,711 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:09,712 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-12 22:38:09,714 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 266 [2021-11-12 22:38:09,714 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:09,716 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:09,719 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 245 [2021-11-12 22:38:09,721 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 303 [2021-11-12 22:38:09,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:09,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:09,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:09,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2021-11-12 22:38:09,753 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:09,754 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:38:09,755 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:09,755 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:38:09,756 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:09,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:09,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:09,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:38:09,768 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:09,769 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:09,769 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:09,770 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:09,770 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:09,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:09,786 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:09,812 INFO L180 QuantifierPusher]: treesize reduction 92, result has 74.9 percent of original size [2021-11-12 22:38:09,814 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:38:09,815 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:38:09,815 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:374, output treesize:274 [2021-11-12 22:38:09,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:09,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:09,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:09,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:09,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:09,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:09,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:09,848 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:38:09,849 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:09,850 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:09,850 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:09,851 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:38:09,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:38:09,856 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:09,856 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:38:09,856 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:09,857 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:38:09,857 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:09,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:09,859 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:09,859 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:09,860 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:38:09,860 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:09,861 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:38:09,864 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:38:09,865 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:38:09,867 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:09,869 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-12 22:38:09,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:09,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:09,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:09,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:09,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:09,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:09,884 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:38:09,886 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:38:09,891 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:38:10,458 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:38:10,459 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:38:10,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 43 [2021-11-12 22:38:10,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497788636] [2021-11-12 22:38:10,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:38:10,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-11-12 22:38:10,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:38:10,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-11-12 22:38:10,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=2035, Unknown=1, NotChecked=0, Total=2256 [2021-11-12 22:38:10,465 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 43 states, 43 states have (on average 1.7674418604651163) internal successors, (76), 43 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:11,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:11,663 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2021-11-12 22:38:11,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-12 22:38:11,663 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.7674418604651163) internal successors, (76), 43 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-12 22:38:11,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:11,664 INFO L225 Difference]: With dead ends: 55 [2021-11-12 22:38:11,664 INFO L226 Difference]: Without dead ends: 34 [2021-11-12 22:38:11,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1333 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=581, Invalid=4968, Unknown=1, NotChecked=0, Total=5550 [2021-11-12 22:38:11,666 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 54 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 279.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.40ms SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 89 IncrementalHoareTripleChecker+Unchecked, 344.87ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:11,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 168 Invalid, 719 Unknown, 0 Unchecked, 3.40ms Time], IncrementalHoareTripleChecker [100 Valid, 530 Invalid, 0 Unknown, 89 Unchecked, 344.87ms Time] [2021-11-12 22:38:11,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-12 22:38:11,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2021-11-12 22:38:11,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:11,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2021-11-12 22:38:11,674 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 27 [2021-11-12 22:38:11,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:11,674 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2021-11-12 22:38:11,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.7674418604651163) internal successors, (76), 43 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:11,675 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2021-11-12 22:38:11,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-12 22:38:11,676 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:11,676 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1] [2021-11-12 22:38:11,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-12 22:38:11,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable210 [2021-11-12 22:38:11,890 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:38:11,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:11,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1177967202, now seen corresponding path program 9 times [2021-11-12 22:38:11,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:38:11,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322666205] [2021-11-12 22:38:11,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:11,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:38:11,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:12,173 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:12,174 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:38:12,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322666205] [2021-11-12 22:38:12,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322666205] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:38:12,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106523122] [2021-11-12 22:38:12,174 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-12 22:38:12,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:38:12,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:38:12,175 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:38:12,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-12 22:38:12,220 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-12 22:38:12,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:38:12,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-12 22:38:12,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:38:12,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-12 22:38:12,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 26 [2021-11-12 22:38:12,620 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:12,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:38:12,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:38:12,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:38:12,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:38:12,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:38:12,882 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:12,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106523122] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:38:12,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1946051811] [2021-11-12 22:38:12,884 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:38:12,884 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:38:12,885 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:38:12,885 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:38:12,885 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:38:12,889 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:12,890 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:12,890 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:12,890 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:38:12,891 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:12,891 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:12,892 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:38:12,892 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:38:12,894 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_38|], 10=[|v_#valid_45|]} [2021-11-12 22:38:12,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:12,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:38:12,901 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:12,901 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:38:12,902 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:12,902 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:38:12,903 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:12,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:12,905 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:12,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:12,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:12,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:12,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:12,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:38:12,915 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:12,917 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:38:12,917 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:12,918 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:38:12,918 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:12,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:12,920 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:12,921 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:12,922 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:38:12,922 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:12,923 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:38:12,926 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:38:12,927 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:12,927 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:12,928 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:38:12,928 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:12,929 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:12,929 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:38:12,930 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:38:12,932 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_39|], 10=[|v_#valid_46|]} [2021-11-12 22:38:12,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:12,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:12,943 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:38:12,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:38:12,944 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:12,945 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:12,945 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:12,945 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:12,946 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:12,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:12,949 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:12,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:12,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:12,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:12,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:38:12,959 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:12,960 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:38:12,961 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:12,961 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:38:12,961 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:12,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:12,964 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:12,965 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:12,967 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:38:12,967 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:12,967 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:38:12,969 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:12,971 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:12,971 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:12,971 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 22:38:12,973 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-11-12 22:38:12,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:12,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:12,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-12 22:38:12,983 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:12,984 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:38:12,984 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:12,985 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:38:12,985 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:12,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:12,988 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:12,989 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:12,990 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 112 [2021-11-12 22:38:12,991 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:12,991 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:116, output treesize:112 [2021-11-12 22:38:12,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:13,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:13,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:13,020 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:13,025 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:13,028 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:13,028 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:13,029 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:13,029 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:38:13,030 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:13,030 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:13,031 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-12 22:38:13,033 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 266 [2021-11-12 22:38:13,033 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:13,035 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:13,038 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 245 [2021-11-12 22:38:13,040 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 303 [2021-11-12 22:38:13,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:13,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:13,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:13,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2021-11-12 22:38:13,066 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:13,067 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:38:13,068 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:13,068 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:38:13,069 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:13,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:13,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:13,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:38:13,082 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:13,083 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:13,084 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:13,084 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:13,084 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:13,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:13,119 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:13,126 INFO L180 QuantifierPusher]: treesize reduction 92, result has 74.9 percent of original size [2021-11-12 22:38:13,129 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:38:13,129 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:38:13,130 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:374, output treesize:274 [2021-11-12 22:38:13,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:13,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:13,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:13,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:13,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:13,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:13,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:13,163 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:38:13,164 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:13,164 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:13,165 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:13,166 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:38:13,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:38:13,171 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:13,171 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:38:13,171 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:13,172 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:38:13,172 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:13,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:13,174 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:13,175 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:13,175 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:38:13,176 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:13,176 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:38:13,179 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:38:13,180 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:38:13,182 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:13,184 INFO L185 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size 71 [2021-11-12 22:38:13,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:13,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:13,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:13,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:13,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:13,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:13,200 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:13,203 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-12 22:38:13,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:13,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:13,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:13,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:13,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:13,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:13,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:13,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:13,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:13,227 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:38:13,228 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:38:13,234 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:38:13,730 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:38:13,730 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:38:13,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 26 [2021-11-12 22:38:13,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023120449] [2021-11-12 22:38:13,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:38:13,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-12 22:38:13,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:38:13,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-12 22:38:13,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=848, Unknown=0, NotChecked=0, Total=930 [2021-11-12 22:38:13,732 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 26 states, 26 states have (on average 2.076923076923077) internal successors, (54), 26 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:14,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:14,142 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2021-11-12 22:38:14,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-12 22:38:14,142 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.076923076923077) internal successors, (54), 26 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-12 22:38:14,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:14,143 INFO L225 Difference]: With dead ends: 39 [2021-11-12 22:38:14,143 INFO L226 Difference]: Without dead ends: 37 [2021-11-12 22:38:14,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 74 SyntacticMatches, 6 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=151, Invalid=1489, Unknown=0, NotChecked=0, Total=1640 [2021-11-12 22:38:14,145 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 18 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 199.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.34ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 250.25ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:14,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 152 Invalid, 546 Unknown, 0 Unchecked, 2.34ms Time], IncrementalHoareTripleChecker [33 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 250.25ms Time] [2021-11-12 22:38:14,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-12 22:38:14,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2021-11-12 22:38:14,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 34 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:14,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2021-11-12 22:38:14,152 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 31 [2021-11-12 22:38:14,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:14,152 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2021-11-12 22:38:14,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.076923076923077) internal successors, (54), 26 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:14,153 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2021-11-12 22:38:14,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-12 22:38:14,154 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:14,154 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1] [2021-11-12 22:38:14,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-12 22:38:14,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable234 [2021-11-12 22:38:14,369 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:38:14,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:14,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1352067365, now seen corresponding path program 10 times [2021-11-12 22:38:14,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:38:14,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251905738] [2021-11-12 22:38:14,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:14,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:38:14,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:14,606 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 58 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:14,606 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:38:14,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251905738] [2021-11-12 22:38:14,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251905738] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:38:14,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843349712] [2021-11-12 22:38:14,607 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-12 22:38:14,607 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:38:14,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:38:14,608 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:38:14,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-12 22:38:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:14,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-12 22:38:14,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:38:14,932 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 77 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:14,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:38:15,026 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 77 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:15,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843349712] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:38:15,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1679994702] [2021-11-12 22:38:15,028 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:38:15,029 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:38:15,029 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:38:15,029 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:38:15,029 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:38:15,033 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:15,033 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:15,034 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:15,034 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:38:15,035 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:15,035 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:15,035 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:38:15,036 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:38:15,038 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_41|], 10=[|v_#valid_48|]} [2021-11-12 22:38:15,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:15,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:38:15,044 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:15,044 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:38:15,045 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:15,045 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:38:15,045 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:15,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:15,052 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:15,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:15,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:15,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:15,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:15,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:38:15,061 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:15,062 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:38:15,062 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:15,063 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:38:15,063 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:15,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:15,065 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:15,066 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:15,067 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:38:15,067 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:15,067 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:38:15,070 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:38:15,071 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:15,072 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:15,072 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:38:15,072 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:15,074 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:15,074 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:38:15,075 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:38:15,078 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_42|], 10=[|v_#valid_49|]} [2021-11-12 22:38:15,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:15,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:15,096 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:38:15,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:38:15,097 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:15,098 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:15,099 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:15,099 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:15,099 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:15,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:15,102 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:15,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:15,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:15,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:15,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:38:15,119 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:15,121 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:38:15,122 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:15,122 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:38:15,122 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:15,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:15,126 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:15,127 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:15,128 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:38:15,129 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:15,129 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:38:15,132 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:15,133 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:15,134 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:15,134 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 22:38:15,136 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-11-12 22:38:15,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:15,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:15,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-12 22:38:15,155 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:15,157 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:38:15,158 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:15,158 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:38:15,159 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:15,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:15,162 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:15,163 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:15,165 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 112 [2021-11-12 22:38:15,165 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:15,165 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:116, output treesize:112 [2021-11-12 22:38:15,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:15,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:15,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:15,199 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:15,204 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:15,207 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:15,207 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:15,208 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:15,208 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:38:15,209 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:15,209 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:15,210 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-12 22:38:15,212 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 266 [2021-11-12 22:38:15,213 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:15,215 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:15,217 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 245 [2021-11-12 22:38:15,220 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 303 [2021-11-12 22:38:15,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:15,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:15,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:38:15,240 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:15,241 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:15,241 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:15,242 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:15,242 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:15,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:15,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:15,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:15,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2021-11-12 22:38:15,256 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:15,257 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:38:15,258 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:15,258 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:38:15,259 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:15,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:15,275 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:15,283 INFO L180 QuantifierPusher]: treesize reduction 92, result has 74.9 percent of original size [2021-11-12 22:38:15,286 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:38:15,286 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:38:15,287 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:374, output treesize:274 [2021-11-12 22:38:15,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:15,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:15,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:15,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:15,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:15,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:15,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:15,320 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:38:15,321 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:15,322 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:15,322 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:15,323 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:38:15,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:38:15,328 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:15,329 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:38:15,329 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:15,329 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:38:15,330 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:15,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:15,332 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:15,332 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:15,333 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:38:15,333 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:15,334 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:38:15,337 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:38:15,339 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:38:15,341 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:15,343 INFO L185 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size 71 [2021-11-12 22:38:15,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:15,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:15,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:15,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:15,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:15,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:15,360 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:15,363 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-12 22:38:15,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:15,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:15,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:15,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:15,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:15,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:15,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:15,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:15,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:15,389 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:38:15,391 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:38:15,397 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:38:15,884 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:38:15,884 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:38:15,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 28 [2021-11-12 22:38:15,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215217483] [2021-11-12 22:38:15,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:38:15,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-12 22:38:15,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:38:15,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-12 22:38:15,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=849, Unknown=0, NotChecked=0, Total=1056 [2021-11-12 22:38:15,886 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 28 states, 28 states have (on average 2.25) internal successors, (63), 28 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:16,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:16,011 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2021-11-12 22:38:16,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-12 22:38:16,012 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.25) internal successors, (63), 28 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-12 22:38:16,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:16,012 INFO L225 Difference]: With dead ends: 69 [2021-11-12 22:38:16,013 INFO L226 Difference]: Without dead ends: 42 [2021-11-12 22:38:16,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 445 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=319, Invalid=1241, Unknown=0, NotChecked=0, Total=1560 [2021-11-12 22:38:16,014 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 64 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.85ms SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61.36ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:16,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 47 Invalid, 138 Unknown, 0 Unchecked, 0.85ms Time], IncrementalHoareTripleChecker [48 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 61.36ms Time] [2021-11-12 22:38:16,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-11-12 22:38:16,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2021-11-12 22:38:16,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 35 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:16,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2021-11-12 22:38:16,020 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 34 [2021-11-12 22:38:16,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:16,021 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2021-11-12 22:38:16,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.25) internal successors, (63), 28 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:16,021 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2021-11-12 22:38:16,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-12 22:38:16,022 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:16,022 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1] [2021-11-12 22:38:16,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-12 22:38:16,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable267 [2021-11-12 22:38:16,226 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:38:16,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:16,227 INFO L85 PathProgramCache]: Analyzing trace with hash -2128271935, now seen corresponding path program 11 times [2021-11-12 22:38:16,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:38:16,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656578924] [2021-11-12 22:38:16,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:16,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:38:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:16,557 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:16,557 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:38:16,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656578924] [2021-11-12 22:38:16,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656578924] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:38:16,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512532338] [2021-11-12 22:38:16,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 22:38:16,558 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:38:16,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:38:16,558 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:38:16,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-12 22:38:16,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-12 22:38:16,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:38:16,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-12 22:38:16,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:38:16,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-12 22:38:17,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 26 [2021-11-12 22:38:17,193 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:17,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:38:17,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:38:17,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:38:17,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:38:17,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:38:17,488 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:17,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512532338] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:38:17,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2112712091] [2021-11-12 22:38:17,491 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:38:17,491 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:38:17,491 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:38:17,491 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:38:17,491 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:38:17,496 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:17,497 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:17,497 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:17,498 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:38:17,498 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:17,499 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:17,499 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:38:17,500 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:38:17,502 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_44|], 10=[|v_#valid_51|]} [2021-11-12 22:38:17,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:17,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:38:17,508 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:17,508 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:38:17,509 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:17,509 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:38:17,509 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:17,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:17,512 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:17,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:17,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:17,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:17,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:17,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:38:17,521 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:17,522 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:38:17,522 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:17,523 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:38:17,523 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:17,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:17,525 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:17,526 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:17,527 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:38:17,527 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:17,527 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:38:17,530 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:38:17,531 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:17,532 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:17,532 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:38:17,533 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:17,533 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:17,534 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:38:17,535 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:38:17,537 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_45|], 10=[|v_#valid_52|]} [2021-11-12 22:38:17,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:17,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:17,547 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:38:17,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:38:17,548 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:17,549 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:17,549 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:17,550 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:17,550 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:17,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:17,553 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:17,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:17,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:17,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:17,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:38:17,563 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:17,565 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:38:17,565 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:17,566 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:38:17,566 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:17,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:17,569 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:17,570 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:17,571 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:38:17,572 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:17,572 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:38:17,574 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:17,575 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:17,576 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:17,576 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:38:17,578 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-11-12 22:38:17,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:17,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:17,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:38:17,588 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:17,589 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:17,589 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:17,590 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:17,590 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:17,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:17,594 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:17,596 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:17,597 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-11-12 22:38:17,597 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:17,597 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:132, output treesize:128 [2021-11-12 22:38:17,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:17,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:17,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:17,627 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:17,633 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:17,635 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:17,636 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:17,636 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:17,637 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-12 22:38:17,637 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:17,638 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:17,638 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:38:17,641 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:38:17,641 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:17,643 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:17,645 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 253 [2021-11-12 22:38:17,647 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 314 [2021-11-12 22:38:17,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:17,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:17,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:17,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 56 [2021-11-12 22:38:17,668 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:17,670 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-12 22:38:17,670 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:17,671 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-12 22:38:17,671 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:17,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:17,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:17,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:38:17,684 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:17,684 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:17,685 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:17,685 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:17,685 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:17,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:17,696 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:17,700 INFO L180 QuantifierPusher]: treesize reduction 99, result has 73.9 percent of original size [2021-11-12 22:38:17,702 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 281 [2021-11-12 22:38:17,702 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:38:17,703 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:388, output treesize:281 [2021-11-12 22:38:17,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:17,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:17,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:17,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:17,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:17,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:17,725 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:38:17,725 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:17,727 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:17,727 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:17,728 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:38:17,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:38:17,742 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:17,742 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:38:17,743 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:17,743 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:38:17,743 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:17,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:17,745 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:17,746 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:17,747 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:38:17,747 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:17,747 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:38:17,751 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:38:17,752 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:38:17,754 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:17,756 INFO L185 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size 71 [2021-11-12 22:38:17,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:17,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:17,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:17,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:17,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:17,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:17,768 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:17,771 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-12 22:38:17,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:17,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:17,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:17,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:17,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:17,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:17,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:17,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:17,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:17,794 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:38:17,796 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:38:17,801 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:38:18,352 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:38:18,352 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:38:18,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 29 [2021-11-12 22:38:18,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692190965] [2021-11-12 22:38:18,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:38:18,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-12 22:38:18,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:38:18,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-12 22:38:18,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1032, Unknown=0, NotChecked=0, Total=1122 [2021-11-12 22:38:18,354 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 29 states, 29 states have (on average 2.103448275862069) internal successors, (61), 29 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:18,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:18,820 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2021-11-12 22:38:18,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-12 22:38:18,820 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.103448275862069) internal successors, (61), 29 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-12 22:38:18,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:18,821 INFO L225 Difference]: With dead ends: 43 [2021-11-12 22:38:18,821 INFO L226 Difference]: Without dead ends: 41 [2021-11-12 22:38:18,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 85 SyntacticMatches, 6 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=166, Invalid=1814, Unknown=0, NotChecked=0, Total=1980 [2021-11-12 22:38:18,823 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 17 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 216.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.27ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 259.38ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:18,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 174 Invalid, 645 Unknown, 0 Unchecked, 2.27ms Time], IncrementalHoareTripleChecker [35 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 259.38ms Time] [2021-11-12 22:38:18,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-12 22:38:18,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2021-11-12 22:38:18,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 38 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:18,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2021-11-12 22:38:18,830 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 35 [2021-11-12 22:38:18,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:18,830 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2021-11-12 22:38:18,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.103448275862069) internal successors, (61), 29 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:18,831 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2021-11-12 22:38:18,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-12 22:38:18,832 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:18,832 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 1, 1, 1, 1, 1] [2021-11-12 22:38:18,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-12 22:38:19,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable300 [2021-11-12 22:38:19,038 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:38:19,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:19,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1037198564, now seen corresponding path program 12 times [2021-11-12 22:38:19,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:38:19,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683034946] [2021-11-12 22:38:19,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:19,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:38:19,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:19,205 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 78 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:19,206 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:38:19,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683034946] [2021-11-12 22:38:19,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683034946] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:38:19,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090983792] [2021-11-12 22:38:19,206 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-12 22:38:19,207 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:38:19,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:38:19,212 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:38:19,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-12 22:38:19,279 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-12 22:38:19,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:38:19,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-12 22:38:19,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:38:19,535 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 100 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:19,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:38:19,634 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 100 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:19,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090983792] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:38:19,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1878583897] [2021-11-12 22:38:19,636 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:38:19,636 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:38:19,637 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:38:19,637 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:38:19,637 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:38:19,652 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:19,653 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:19,653 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:19,653 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:38:19,653 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:19,654 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:19,654 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:38:19,655 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:38:19,657 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_47|], 10=[|v_#valid_54|]} [2021-11-12 22:38:19,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:19,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:38:19,662 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:19,662 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:38:19,662 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:19,663 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:38:19,663 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:19,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:19,664 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:19,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:19,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:19,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:19,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:19,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:38:19,672 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:19,673 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:38:19,676 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:19,677 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:38:19,677 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:19,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:19,678 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:19,679 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:19,680 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:38:19,680 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:19,680 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:38:19,682 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:38:19,683 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:19,683 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:19,683 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:38:19,683 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:19,684 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:19,684 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:38:19,685 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:38:19,686 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_48|], 10=[|v_#valid_55|]} [2021-11-12 22:38:19,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:19,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:19,696 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:38:19,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:38:19,696 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:19,697 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:19,698 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:19,698 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:19,698 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:19,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:19,700 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:19,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:19,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:19,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:19,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:38:19,709 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:19,710 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:38:19,711 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:19,711 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:38:19,712 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:19,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:19,714 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:19,714 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:19,715 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:38:19,715 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:19,715 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:38:19,717 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:19,717 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:19,718 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:19,718 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 22:38:19,733 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-11-12 22:38:19,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:19,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:19,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-12 22:38:19,742 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:19,743 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:38:19,744 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:19,744 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:38:19,744 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:19,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:19,746 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:19,747 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:19,748 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 112 [2021-11-12 22:38:19,748 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:19,748 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:116, output treesize:112 [2021-11-12 22:38:19,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:19,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:19,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:19,774 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:19,778 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:19,779 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:19,779 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:19,780 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:19,780 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:38:19,780 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:19,782 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:19,782 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-12 22:38:19,800 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 266 [2021-11-12 22:38:19,800 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:19,802 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:19,804 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 245 [2021-11-12 22:38:19,807 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 303 [2021-11-12 22:38:19,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:19,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:19,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:38:19,821 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:19,822 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:19,823 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:19,823 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:19,824 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:19,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:19,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:19,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:19,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2021-11-12 22:38:19,840 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:19,842 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:38:19,842 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:19,843 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:38:19,843 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:19,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:19,859 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:19,866 INFO L180 QuantifierPusher]: treesize reduction 92, result has 74.9 percent of original size [2021-11-12 22:38:19,868 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:38:19,869 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:38:19,870 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:374, output treesize:274 [2021-11-12 22:38:19,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:19,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:19,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:19,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:19,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:19,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:19,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:19,906 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:38:19,907 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:19,907 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:19,908 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:19,909 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:38:19,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:38:19,915 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:19,915 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:38:19,915 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:19,916 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:38:19,916 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:19,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:19,918 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:19,919 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:19,919 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:38:19,920 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:19,920 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:38:19,923 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:38:19,925 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:38:19,927 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:19,929 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-12 22:38:19,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:19,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:19,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:19,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:19,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:19,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:19,950 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:38:19,952 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:38:19,958 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:38:20,385 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:38:20,385 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:38:20,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 31 [2021-11-12 22:38:20,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606009071] [2021-11-12 22:38:20,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:38:20,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-12 22:38:20,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:38:20,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-12 22:38:20,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=1012, Unknown=0, NotChecked=0, Total=1260 [2021-11-12 22:38:20,387 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 31 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 31 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:20,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:20,540 INFO L93 Difference]: Finished difference Result 76 states and 78 transitions. [2021-11-12 22:38:20,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-12 22:38:20,541 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 31 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-12 22:38:20,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:20,541 INFO L225 Difference]: With dead ends: 76 [2021-11-12 22:38:20,541 INFO L226 Difference]: Without dead ends: 46 [2021-11-12 22:38:20,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=388, Invalid=1504, Unknown=0, NotChecked=0, Total=1892 [2021-11-12 22:38:20,542 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 56 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.02ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 76.65ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:20,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 75 Invalid, 180 Unknown, 0 Unchecked, 1.02ms Time], IncrementalHoareTripleChecker [39 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 76.65ms Time] [2021-11-12 22:38:20,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-12 22:38:20,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2021-11-12 22:38:20,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 39 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:20,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2021-11-12 22:38:20,550 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 38 [2021-11-12 22:38:20,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:20,550 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2021-11-12 22:38:20,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 31 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:20,550 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2021-11-12 22:38:20,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-12 22:38:20,551 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:20,551 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1, 1] [2021-11-12 22:38:20,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-12 22:38:20,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable332 [2021-11-12 22:38:20,754 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:38:20,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:20,755 INFO L85 PathProgramCache]: Analyzing trace with hash 668714754, now seen corresponding path program 13 times [2021-11-12 22:38:20,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:38:20,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097914213] [2021-11-12 22:38:20,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:20,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:38:20,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:21,270 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:21,271 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:38:21,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097914213] [2021-11-12 22:38:21,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097914213] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:38:21,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803582005] [2021-11-12 22:38:21,271 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-12 22:38:21,271 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:38:21,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:38:21,272 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:38:21,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-12 22:38:21,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:21,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-12 22:38:21,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:38:21,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-12 22:38:22,032 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:22,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:38:22,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:38:22,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:38:22,450 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:22,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803582005] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:38:22,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1424347185] [2021-11-12 22:38:22,452 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:38:22,452 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:38:22,453 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:38:22,453 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:38:22,453 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:38:22,456 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:22,457 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:22,457 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:22,458 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:38:22,458 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:22,458 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:22,459 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:38:22,460 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:38:22,462 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_50|], 10=[|v_#valid_57|]} [2021-11-12 22:38:22,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:22,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:38:22,468 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:22,469 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:38:22,469 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:22,469 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:38:22,470 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:22,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:22,475 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:22,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:22,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:22,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:22,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:22,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:38:22,484 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:22,486 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:38:22,486 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:22,486 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:38:22,487 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:22,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:22,489 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:22,490 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:22,491 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:38:22,491 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:22,491 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:38:22,495 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:38:22,496 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:22,496 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:22,497 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:38:22,497 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:22,497 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:22,498 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:38:22,499 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:38:22,501 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_51|], 10=[|v_#valid_58|]} [2021-11-12 22:38:22,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:22,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:22,513 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:38:22,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:38:22,514 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:22,515 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:22,515 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:22,516 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:22,516 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:22,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:22,519 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:22,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:22,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:22,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:22,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:38:22,530 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:22,531 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:38:22,532 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:22,532 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:38:22,533 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:22,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:22,536 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:22,537 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:22,538 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:38:22,539 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:22,539 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:38:22,541 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:22,542 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:22,543 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:22,543 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 22:38:22,545 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-11-12 22:38:22,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:22,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:22,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-12 22:38:22,555 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:22,556 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:38:22,557 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:22,557 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:38:22,558 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:22,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:22,561 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:22,562 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:22,564 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 112 [2021-11-12 22:38:22,564 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:22,564 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:116, output treesize:112 [2021-11-12 22:38:22,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:22,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:22,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:22,594 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:22,600 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:22,602 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:22,603 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:22,603 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:22,604 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-12 22:38:22,604 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:22,605 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:22,605 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:38:22,607 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 266 [2021-11-12 22:38:22,608 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:22,610 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:22,612 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 245 [2021-11-12 22:38:22,615 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 303 [2021-11-12 22:38:22,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:22,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:22,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:38:22,634 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:22,635 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:22,636 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:22,636 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:22,637 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:22,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:22,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:22,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:22,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2021-11-12 22:38:22,653 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:22,654 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:38:22,655 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:22,655 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:38:22,656 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:22,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:22,673 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:22,680 INFO L180 QuantifierPusher]: treesize reduction 92, result has 74.9 percent of original size [2021-11-12 22:38:22,683 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:38:22,684 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:38:22,684 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:374, output treesize:274 [2021-11-12 22:38:22,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:22,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:22,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:22,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:22,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:22,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:22,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:22,717 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:38:22,718 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:22,719 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:22,719 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:22,720 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:38:22,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:38:22,725 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:22,725 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:38:22,725 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:22,726 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:38:22,726 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:22,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:22,728 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:22,729 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:22,729 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:38:22,730 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:22,730 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:38:22,734 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:38:22,735 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:38:22,737 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:22,739 INFO L185 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size 71 [2021-11-12 22:38:22,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:22,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:22,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:22,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:22,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:22,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:22,756 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:22,759 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-12 22:38:22,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:22,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:22,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:22,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:22,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:22,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:22,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:22,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:22,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:22,783 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:38:22,785 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:38:22,791 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:38:23,600 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:38:23,601 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:38:23,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 51 [2021-11-12 22:38:23,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951187468] [2021-11-12 22:38:23,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:38:23,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-11-12 22:38:23,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:38:23,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-11-12 22:38:23,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=2921, Unknown=0, NotChecked=0, Total=3080 [2021-11-12 22:38:23,604 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 51 states, 51 states have (on average 2.0) internal successors, (102), 51 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:24,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:24,939 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2021-11-12 22:38:24,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-12 22:38:24,939 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.0) internal successors, (102), 51 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-12 22:38:24,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:24,940 INFO L225 Difference]: With dead ends: 47 [2021-11-12 22:38:24,940 INFO L226 Difference]: Without dead ends: 45 [2021-11-12 22:38:24,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=320, Invalid=5230, Unknown=0, NotChecked=0, Total=5550 [2021-11-12 22:38:24,943 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 36 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 420.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.23ms SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 497.60ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:24,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 327 Invalid, 1140 Unknown, 0 Unchecked, 4.23ms Time], IncrementalHoareTripleChecker [62 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 497.60ms Time] [2021-11-12 22:38:24,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-11-12 22:38:24,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2021-11-12 22:38:24,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 42 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:24,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2021-11-12 22:38:24,950 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 39 [2021-11-12 22:38:24,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:24,951 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2021-11-12 22:38:24,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.0) internal successors, (102), 51 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:24,951 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2021-11-12 22:38:24,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-12 22:38:24,952 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:24,952 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 1, 1, 1, 1, 1] [2021-11-12 22:38:24,974 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-11-12 22:38:25,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable356 [2021-11-12 22:38:25,166 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:38:25,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:25,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1627711035, now seen corresponding path program 14 times [2021-11-12 22:38:25,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:38:25,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747938068] [2021-11-12 22:38:25,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:25,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:38:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:25,359 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 101 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:25,360 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:38:25,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747938068] [2021-11-12 22:38:25,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747938068] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:38:25,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730963442] [2021-11-12 22:38:25,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 22:38:25,360 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:38:25,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:38:25,361 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:38:25,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-12 22:38:25,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-11-12 22:38:25,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:38:25,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-12 22:38:25,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:38:25,902 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 126 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:25,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:38:25,997 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 126 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:25,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730963442] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:38:25,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [705143822] [2021-11-12 22:38:25,999 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:38:25,999 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:38:26,000 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:38:26,000 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:38:26,000 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:38:26,027 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:26,028 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:26,028 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:26,029 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:38:26,029 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:26,029 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:26,030 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:38:26,031 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:38:26,033 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_53|], 10=[|v_#valid_60|]} [2021-11-12 22:38:26,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:26,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:38:26,039 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:26,039 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:38:26,040 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:26,040 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:38:26,040 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:26,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:26,042 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:26,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:26,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:26,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:26,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:26,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:38:26,052 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:26,053 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:38:26,054 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:26,054 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:38:26,054 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:26,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:26,057 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:26,057 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:26,058 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:38:26,059 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:26,059 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:38:26,062 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:38:26,063 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:26,063 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:26,064 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:38:26,064 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:26,065 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:26,065 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:38:26,066 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:38:26,068 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_54|], 10=[|v_#valid_61|]} [2021-11-12 22:38:26,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:26,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:26,081 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:38:26,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:38:26,082 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:26,083 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:26,083 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:26,083 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:26,084 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:26,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:26,087 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:26,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:26,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:26,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:26,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:38:26,098 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:26,100 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:38:26,101 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:26,101 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:38:26,101 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:26,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:26,104 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:26,106 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:26,107 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:38:26,107 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:26,108 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:38:26,110 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:26,111 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:26,112 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:26,113 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:38:26,114 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-11-12 22:38:26,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:26,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:26,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:38:26,127 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:26,128 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:26,129 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:26,130 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:26,130 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:26,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:26,133 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:26,135 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:26,136 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-11-12 22:38:26,137 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:26,137 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:132, output treesize:128 [2021-11-12 22:38:26,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:26,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:26,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:26,171 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:26,176 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:26,177 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:26,177 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:26,179 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:26,179 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:38:26,180 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:26,180 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:26,181 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-12 22:38:26,182 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:38:26,182 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:26,183 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:26,184 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 253 [2021-11-12 22:38:26,186 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 314 [2021-11-12 22:38:26,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:26,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:26,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:38:26,212 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:26,213 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:26,213 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:26,214 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:26,214 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:26,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:26,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:26,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:26,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 56 [2021-11-12 22:38:26,229 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:26,230 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-12 22:38:26,230 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:26,231 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-12 22:38:26,231 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:26,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:26,242 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:26,246 INFO L180 QuantifierPusher]: treesize reduction 97, result has 74.3 percent of original size [2021-11-12 22:38:26,248 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 281 [2021-11-12 22:38:26,249 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:38:26,249 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:388, output treesize:281 [2021-11-12 22:38:26,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:26,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:26,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:26,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:26,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:26,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:26,282 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:38:26,282 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:26,283 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:26,283 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:26,284 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:38:26,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:38:26,289 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:26,289 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:38:26,289 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:26,290 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:38:26,290 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:26,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:26,292 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:26,292 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:26,293 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:38:26,293 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:26,294 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:38:26,297 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:38:26,299 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:38:26,301 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:26,303 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-12 22:38:26,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:26,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:26,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:26,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:26,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:26,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:26,317 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:38:26,319 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:38:26,325 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:38:26,800 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:38:26,800 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:38:26,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 34 [2021-11-12 22:38:26,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230664064] [2021-11-12 22:38:26,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:38:26,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-12 22:38:26,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:38:26,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-12 22:38:26,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=1189, Unknown=0, NotChecked=0, Total=1482 [2021-11-12 22:38:26,803 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand has 34 states, 34 states have (on average 2.264705882352941) internal successors, (77), 34 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:27,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:27,030 INFO L93 Difference]: Finished difference Result 83 states and 85 transitions. [2021-11-12 22:38:27,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-12 22:38:27,030 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.264705882352941) internal successors, (77), 34 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-12 22:38:27,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:27,031 INFO L225 Difference]: With dead ends: 83 [2021-11-12 22:38:27,031 INFO L226 Difference]: Without dead ends: 50 [2021-11-12 22:38:27,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 637 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=464, Invalid=1792, Unknown=0, NotChecked=0, Total=2256 [2021-11-12 22:38:27,032 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 84 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 105.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.40ms SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 121.37ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:27,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 82 Invalid, 222 Unknown, 0 Unchecked, 1.40ms Time], IncrementalHoareTripleChecker [63 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 121.37ms Time] [2021-11-12 22:38:27,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-12 22:38:27,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2021-11-12 22:38:27,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 43 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:27,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2021-11-12 22:38:27,039 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 42 [2021-11-12 22:38:27,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:27,039 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2021-11-12 22:38:27,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.264705882352941) internal successors, (77), 34 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:27,040 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2021-11-12 22:38:27,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-12 22:38:27,041 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:27,041 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1, 1] [2021-11-12 22:38:27,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-12 22:38:27,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable389 [2021-11-12 22:38:27,246 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:38:27,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:27,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1437683935, now seen corresponding path program 15 times [2021-11-12 22:38:27,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:38:27,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158341211] [2021-11-12 22:38:27,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:27,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:38:27,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:27,659 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 181 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:27,660 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:38:27,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158341211] [2021-11-12 22:38:27,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158341211] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:38:27,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401727095] [2021-11-12 22:38:27,660 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-12 22:38:27,660 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:38:27,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:38:27,661 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:38:27,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-12 22:38:27,713 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-12 22:38:27,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:38:27,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 46 conjunts are in the unsatisfiable core [2021-11-12 22:38:27,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:38:27,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-12 22:38:28,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 26 [2021-11-12 22:38:28,363 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 181 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:28,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:38:28,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:38:28,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:38:28,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:38:28,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:38:28,705 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 181 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:28,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401727095] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:38:28,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [719316520] [2021-11-12 22:38:28,707 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:38:28,707 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:38:28,707 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:38:28,708 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:38:28,708 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:38:28,713 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:28,713 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:28,714 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:28,714 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:38:28,714 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:28,714 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:28,715 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:38:28,715 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:38:28,720 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_56|], 10=[|v_#valid_63|]} [2021-11-12 22:38:28,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:28,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:38:28,725 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:28,725 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:38:28,725 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:28,725 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:38:28,726 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:28,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:28,729 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:28,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:28,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:28,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:28,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:28,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:38:28,736 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:28,737 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:38:28,737 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:28,738 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:38:28,738 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:28,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:28,742 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:28,743 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:28,743 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:38:28,743 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:28,744 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:38:28,746 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:38:28,747 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:28,747 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:28,747 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:38:28,748 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:28,748 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:28,748 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:38:28,749 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:38:28,759 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_57|], 10=[|v_#valid_64|]} [2021-11-12 22:38:28,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:28,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:28,771 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:38:28,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:38:28,772 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:28,774 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:28,774 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:28,775 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:28,775 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:28,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:28,778 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:28,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:28,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:28,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:28,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:38:28,789 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:28,791 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:38:28,792 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:28,792 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:38:28,792 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:28,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:28,796 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:28,797 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:28,798 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:38:28,799 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:28,799 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:38:28,801 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:28,808 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:28,809 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:28,821 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 22:38:28,823 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-12 22:38:28,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:28,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:28,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-12 22:38:28,833 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:28,834 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:38:28,834 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:28,835 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:38:28,835 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:28,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:28,839 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:28,840 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:28,842 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-12 22:38:28,842 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:28,842 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:123, output treesize:119 [2021-11-12 22:38:28,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:28,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:28,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:28,871 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:28,878 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:28,880 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:28,881 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:28,881 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:28,882 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:38:28,882 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:28,883 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:28,883 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-12 22:38:28,886 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 271 [2021-11-12 22:38:28,886 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:28,889 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:28,891 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 250 [2021-11-12 22:38:28,894 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 308 [2021-11-12 22:38:28,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:28,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:28,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:38:28,912 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:28,913 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:28,913 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:28,914 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:28,914 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:28,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:28,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:28,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:28,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2021-11-12 22:38:28,929 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:28,930 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:38:28,931 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:28,931 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:38:28,932 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:28,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:28,946 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:28,950 INFO L180 QuantifierPusher]: treesize reduction 97, result has 73.9 percent of original size [2021-11-12 22:38:28,952 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:38:28,952 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:38:28,952 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:379, output treesize:274 [2021-11-12 22:38:28,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:28,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:28,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:28,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:28,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:28,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:28,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:28,977 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:38:28,978 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:28,978 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:28,978 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:28,979 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:38:28,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:38:28,984 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:28,984 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:38:28,984 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:28,984 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:38:28,985 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:28,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:28,986 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:28,986 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:28,987 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:38:28,987 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:28,987 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:38:28,990 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:38:28,991 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:38:28,995 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:28,997 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-12 22:38:28,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:29,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:29,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:29,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:29,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:29,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:29,013 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:38:29,015 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:38:29,019 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:38:29,537 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:38:29,537 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:38:29,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 35 [2021-11-12 22:38:29,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842135491] [2021-11-12 22:38:29,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:38:29,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-12 22:38:29,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:38:29,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-12 22:38:29,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1454, Unknown=0, NotChecked=0, Total=1560 [2021-11-12 22:38:29,539 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 35 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:30,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:30,255 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2021-11-12 22:38:30,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-12 22:38:30,256 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 35 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-12 22:38:30,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:30,257 INFO L225 Difference]: With dead ends: 51 [2021-11-12 22:38:30,257 INFO L226 Difference]: Without dead ends: 49 [2021-11-12 22:38:30,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 107 SyntacticMatches, 6 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=196, Invalid=2560, Unknown=0, NotChecked=0, Total=2756 [2021-11-12 22:38:30,259 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 19 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 342.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.36ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 420.68ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:30,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 266 Invalid, 955 Unknown, 0 Unchecked, 3.36ms Time], IncrementalHoareTripleChecker [43 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 420.68ms Time] [2021-11-12 22:38:30,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-11-12 22:38:30,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2021-11-12 22:38:30,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 46 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:30,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2021-11-12 22:38:30,269 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 43 [2021-11-12 22:38:30,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:30,269 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2021-11-12 22:38:30,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 35 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:30,270 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2021-11-12 22:38:30,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-12 22:38:30,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:30,271 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1] [2021-11-12 22:38:30,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-12 22:38:30,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable412 [2021-11-12 22:38:30,494 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:38:30,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:30,494 INFO L85 PathProgramCache]: Analyzing trace with hash -623438404, now seen corresponding path program 16 times [2021-11-12 22:38:30,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:38:30,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434069806] [2021-11-12 22:38:30,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:30,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:38:30,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:30,773 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 127 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:30,774 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:38:30,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434069806] [2021-11-12 22:38:30,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434069806] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:38:30,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944277814] [2021-11-12 22:38:30,774 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-12 22:38:30,774 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:38:30,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:38:30,775 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:38:30,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-12 22:38:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:30,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-12 22:38:30,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:38:31,178 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 155 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:31,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:38:31,300 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 155 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:31,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944277814] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:38:31,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [253251641] [2021-11-12 22:38:31,302 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:38:31,302 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:38:31,302 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:38:31,302 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:38:31,303 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:38:31,307 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:31,307 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:31,308 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:31,308 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:38:31,308 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:31,309 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:31,309 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:38:31,310 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:38:31,312 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_59|], 10=[|v_#valid_66|]} [2021-11-12 22:38:31,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:31,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:38:31,318 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:31,318 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:38:31,319 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:31,319 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:38:31,319 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:31,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:31,321 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:31,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:31,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:31,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:31,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:31,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:38:31,331 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:31,332 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:38:31,333 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:31,333 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:38:31,334 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:31,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:31,336 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:31,337 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:31,337 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:38:31,338 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:31,338 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:38:31,341 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:38:31,342 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:31,342 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:31,343 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:38:31,343 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:31,344 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:31,344 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:38:31,345 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:38:31,350 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_60|], 10=[|v_#valid_67|]} [2021-11-12 22:38:31,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:31,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:31,365 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:38:31,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:38:31,366 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:31,367 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:31,367 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:31,368 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:31,368 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:31,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:31,372 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:31,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:31,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:31,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:31,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:38:31,383 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:31,384 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:38:31,385 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:31,385 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:38:31,386 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:31,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:31,389 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:31,390 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:31,391 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:38:31,391 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:31,392 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:38:31,394 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:31,395 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:31,396 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:31,397 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 22:38:31,398 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-12 22:38:31,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:31,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:31,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-12 22:38:31,409 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:31,410 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:38:31,411 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:31,411 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:38:31,411 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:31,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:31,415 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:31,416 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:31,418 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-12 22:38:31,418 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:31,419 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:123, output treesize:119 [2021-11-12 22:38:31,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:31,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:31,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:31,449 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:31,455 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:31,458 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:31,458 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:31,459 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:31,460 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-12 22:38:31,460 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:31,461 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:31,461 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:38:31,464 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 271 [2021-11-12 22:38:31,464 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:31,467 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:31,469 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 250 [2021-11-12 22:38:31,472 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 308 [2021-11-12 22:38:31,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:31,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:31,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:31,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2021-11-12 22:38:31,496 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:31,497 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:38:31,498 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:31,498 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:38:31,499 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:31,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:31,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:31,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:38:31,514 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:31,515 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:31,515 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:31,516 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:31,516 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:31,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:31,533 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:31,541 INFO L180 QuantifierPusher]: treesize reduction 97, result has 73.9 percent of original size [2021-11-12 22:38:31,543 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:38:31,544 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:38:31,545 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:379, output treesize:274 [2021-11-12 22:38:31,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:31,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:31,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:31,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:31,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:31,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:31,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:31,579 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:38:31,580 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:31,581 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:31,581 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:31,582 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:38:31,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:38:31,588 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:31,589 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:38:31,589 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:31,590 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:38:31,590 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:31,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:31,592 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:31,593 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:31,594 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:38:31,594 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:31,595 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:38:31,599 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:38:31,600 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:38:31,603 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:31,605 INFO L185 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size 71 [2021-11-12 22:38:31,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:31,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:31,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:31,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:31,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:31,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:31,622 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:31,624 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-12 22:38:31,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:31,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:31,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:31,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:31,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:31,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:31,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:31,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:31,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:31,651 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:38:31,653 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:38:31,658 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:38:32,098 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:38:32,098 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:38:32,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 37 [2021-11-12 22:38:32,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814137069] [2021-11-12 22:38:32,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:38:32,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-12 22:38:32,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:38:32,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-12 22:38:32,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=1380, Unknown=0, NotChecked=0, Total=1722 [2021-11-12 22:38:32,101 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand has 37 states, 37 states have (on average 2.27027027027027) internal successors, (84), 37 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:32,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:32,305 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2021-11-12 22:38:32,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-12 22:38:32,306 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.27027027027027) internal successors, (84), 37 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-12 22:38:32,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:32,306 INFO L225 Difference]: With dead ends: 90 [2021-11-12 22:38:32,306 INFO L226 Difference]: Without dead ends: 54 [2021-11-12 22:38:32,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=547, Invalid=2105, Unknown=0, NotChecked=0, Total=2652 [2021-11-12 22:38:32,308 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 80 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.07ms SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 97.37ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:32,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 91 Invalid, 239 Unknown, 0 Unchecked, 1.07ms Time], IncrementalHoareTripleChecker [63 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 97.37ms Time] [2021-11-12 22:38:32,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-12 22:38:32,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2021-11-12 22:38:32,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 47 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:32,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2021-11-12 22:38:32,316 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 46 [2021-11-12 22:38:32,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:32,316 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2021-11-12 22:38:32,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.27027027027027) internal successors, (84), 37 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:32,317 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2021-11-12 22:38:32,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-12 22:38:32,318 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:32,318 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1, 1] [2021-11-12 22:38:32,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-12 22:38:32,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable436,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:38:32,530 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:38:32,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:32,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1722153890, now seen corresponding path program 17 times [2021-11-12 22:38:32,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:38:32,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297982903] [2021-11-12 22:38:32,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:32,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:38:32,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:33,058 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:33,058 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:38:33,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297982903] [2021-11-12 22:38:33,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297982903] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:38:33,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332987274] [2021-11-12 22:38:33,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 22:38:33,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:38:33,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:38:33,060 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:38:33,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-12 22:38:33,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-11-12 22:38:33,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:38:33,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-12 22:38:33,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:38:33,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-12 22:38:33,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 26 [2021-11-12 22:38:33,974 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:33,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:38:34,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:38:34,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:38:34,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:38:34,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:38:34,352 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:34,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332987274] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:38:34,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [819039994] [2021-11-12 22:38:34,354 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:38:34,355 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:38:34,355 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:38:34,355 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:38:34,355 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:38:34,359 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:34,360 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:34,360 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:34,361 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:38:34,361 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:34,361 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:34,362 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:38:34,363 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:38:34,364 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_62|], 10=[|v_#valid_69|]} [2021-11-12 22:38:34,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:34,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:38:34,370 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:34,371 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:38:34,371 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:34,372 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:38:34,372 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:34,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:34,374 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:34,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:34,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:34,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:34,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:34,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:38:34,387 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:34,388 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:38:34,389 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:34,389 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:38:34,390 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:34,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:34,392 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:34,393 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:34,394 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:38:34,394 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:34,395 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:38:34,398 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:38:34,399 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:34,399 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:34,400 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:38:34,400 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:34,401 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:34,401 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:38:34,402 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:38:34,404 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_63|], 10=[|v_#valid_70|]} [2021-11-12 22:38:34,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:34,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:34,416 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:38:34,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:38:34,417 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:34,418 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:34,419 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:34,419 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:34,419 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:34,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:34,423 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:34,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:34,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:34,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:34,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:38:34,434 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:34,435 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:38:34,436 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:34,436 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:38:34,437 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:34,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:34,440 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:34,441 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:34,442 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:38:34,443 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:34,443 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:38:34,445 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:34,447 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:34,448 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:34,448 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:38:34,450 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-11-12 22:38:34,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:34,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:34,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:38:34,461 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:34,462 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:34,463 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:34,463 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:34,464 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:34,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:34,467 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:34,468 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:34,470 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-11-12 22:38:34,470 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:34,471 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:125, output treesize:121 [2021-11-12 22:38:34,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:34,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:34,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:34,502 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:34,507 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:34,510 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:34,510 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:34,511 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:34,511 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-12 22:38:34,512 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:34,512 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:34,513 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:38:34,515 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 275 [2021-11-12 22:38:34,516 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:34,518 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:34,520 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 254 [2021-11-12 22:38:34,523 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 312 [2021-11-12 22:38:34,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:34,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:34,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:34,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 56 [2021-11-12 22:38:34,546 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:34,547 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-12 22:38:34,548 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:34,549 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-12 22:38:34,549 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:34,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:34,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:34,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:38:34,564 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:34,565 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:34,565 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:34,566 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:34,566 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:34,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:34,583 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:34,592 INFO L180 QuantifierPusher]: treesize reduction 92, result has 75.3 percent of original size [2021-11-12 22:38:34,594 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 281 [2021-11-12 22:38:34,595 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:38:34,596 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:383, output treesize:281 [2021-11-12 22:38:34,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:34,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:34,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:34,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:34,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:34,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:34,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:34,627 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:38:34,628 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:34,629 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:34,629 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:34,630 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:38:34,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:38:34,635 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:34,635 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:38:34,636 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:34,636 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:38:34,636 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:34,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:34,639 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:34,639 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:34,640 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:38:34,641 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:34,641 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:38:34,645 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:38:34,646 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:38:34,649 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:34,650 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-12 22:38:34,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:34,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:34,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:34,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:34,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:34,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:34,670 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:38:34,672 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:38:34,678 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:38:35,244 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:38:35,244 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:38:35,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 38 [2021-11-12 22:38:35,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690433603] [2021-11-12 22:38:35,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:38:35,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-12 22:38:35,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:38:35,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-12 22:38:35,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1692, Unknown=0, NotChecked=0, Total=1806 [2021-11-12 22:38:35,246 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 38 states, 38 states have (on average 2.1578947368421053) internal successors, (82), 38 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:36,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:36,062 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2021-11-12 22:38:36,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-12 22:38:36,062 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.1578947368421053) internal successors, (82), 38 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-12 22:38:36,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:36,063 INFO L225 Difference]: With dead ends: 55 [2021-11-12 22:38:36,063 INFO L226 Difference]: Without dead ends: 53 [2021-11-12 22:38:36,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 118 SyntacticMatches, 6 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=211, Invalid=2981, Unknown=0, NotChecked=0, Total=3192 [2021-11-12 22:38:36,065 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 21 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 428.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.51ms SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 526.04ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:36,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 335 Invalid, 1190 Unknown, 0 Unchecked, 2.51ms Time], IncrementalHoareTripleChecker [48 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 526.04ms Time] [2021-11-12 22:38:36,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-12 22:38:36,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2021-11-12 22:38:36,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.04) internal successors, (52), 50 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:36,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2021-11-12 22:38:36,073 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 47 [2021-11-12 22:38:36,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:36,073 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2021-11-12 22:38:36,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.1578947368421053) internal successors, (82), 38 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:36,073 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2021-11-12 22:38:36,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-12 22:38:36,074 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:36,074 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 1, 1, 1, 1, 1] [2021-11-12 22:38:36,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-12 22:38:36,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable469 [2021-11-12 22:38:36,275 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:38:36,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:36,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1306979739, now seen corresponding path program 18 times [2021-11-12 22:38:36,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:38:36,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816329877] [2021-11-12 22:38:36,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:36,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:38:36,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:36,555 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 156 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:36,555 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:38:36,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816329877] [2021-11-12 22:38:36,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816329877] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:38:36,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556330094] [2021-11-12 22:38:36,556 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-12 22:38:36,556 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:38:36,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:38:36,557 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:38:36,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-12 22:38:36,608 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-12 22:38:36,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:38:36,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-12 22:38:36,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:38:37,021 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 187 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:37,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:38:37,161 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 187 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:37,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556330094] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:38:37,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1100526708] [2021-11-12 22:38:37,162 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:38:37,162 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:38:37,163 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:38:37,163 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:38:37,163 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:38:37,165 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:37,166 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:37,166 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:37,167 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:38:37,167 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:37,167 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:37,167 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:38:37,168 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:38:37,169 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_65|], 10=[|v_#valid_72|]} [2021-11-12 22:38:37,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:37,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:38:37,179 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:37,179 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:38:37,180 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:37,180 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:38:37,180 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:37,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:37,182 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:37,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:37,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:37,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:37,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:37,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:38:37,189 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:37,191 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:38:37,192 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:37,192 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:38:37,192 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:37,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:37,194 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:37,194 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:37,195 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:38:37,195 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:37,195 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:38:37,197 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:38:37,198 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:37,198 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:37,199 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:38:37,199 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:37,199 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:37,200 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:38:37,201 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:38:37,202 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_66|], 10=[|v_#valid_73|]} [2021-11-12 22:38:37,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:37,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:37,212 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:38:37,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:38:37,212 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:37,213 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:37,214 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:37,214 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:37,214 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:37,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:37,216 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:37,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:37,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:37,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:37,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:38:37,225 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:37,227 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:38:37,227 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:37,227 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:38:37,228 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:37,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:37,230 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:37,230 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:37,231 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:38:37,231 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:37,232 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:38:37,234 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:37,235 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:37,236 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:37,236 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:38:37,237 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-11-12 22:38:37,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:37,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:37,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:38:37,248 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:37,248 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:37,249 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:37,249 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:37,249 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:37,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:37,252 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:37,253 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:37,253 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-11-12 22:38:37,254 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:37,254 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:125, output treesize:121 [2021-11-12 22:38:37,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:37,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:37,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:37,284 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:37,287 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:37,288 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:37,289 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:37,289 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:37,290 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-12 22:38:37,290 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:37,290 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:37,291 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:38:37,293 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 275 [2021-11-12 22:38:37,293 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:37,294 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:37,296 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 254 [2021-11-12 22:38:37,298 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 312 [2021-11-12 22:38:37,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:37,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:37,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:38:37,314 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:37,315 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:37,316 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:37,316 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:37,316 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:37,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:37,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:37,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:37,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 56 [2021-11-12 22:38:37,359 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:37,361 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-12 22:38:37,362 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:37,363 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-12 22:38:37,363 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:37,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:37,379 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:37,388 INFO L180 QuantifierPusher]: treesize reduction 94, result has 74.9 percent of original size [2021-11-12 22:38:37,391 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 281 [2021-11-12 22:38:37,396 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:38:37,396 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:383, output treesize:281 [2021-11-12 22:38:37,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:37,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:37,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:37,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:37,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:37,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:37,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:37,433 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:38:37,434 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:37,435 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:37,435 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:37,436 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:38:37,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:38:37,442 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:37,442 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:38:37,442 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:37,443 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:38:37,443 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:37,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:37,445 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:37,446 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:37,447 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:38:37,447 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:37,447 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:38:37,451 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:38:37,453 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:38:37,455 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:37,457 INFO L185 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size 71 [2021-11-12 22:38:37,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:37,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:37,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:37,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:37,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:37,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:37,485 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:37,488 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-12 22:38:37,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:37,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:37,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:37,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:37,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:37,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:37,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:37,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:37,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:37,513 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:38:37,515 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:38:37,519 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:38:37,959 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:38:37,959 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:38:37,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 40 [2021-11-12 22:38:37,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932973352] [2021-11-12 22:38:37,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:38:37,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-12 22:38:37,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:38:37,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-12 22:38:37,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=1585, Unknown=0, NotChecked=0, Total=1980 [2021-11-12 22:38:37,961 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand has 40 states, 40 states have (on average 2.275) internal successors, (91), 40 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:38,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:38,257 INFO L93 Difference]: Finished difference Result 97 states and 99 transitions. [2021-11-12 22:38:38,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-12 22:38:38,258 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.275) internal successors, (91), 40 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-12 22:38:38,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:38,259 INFO L225 Difference]: With dead ends: 97 [2021-11-12 22:38:38,259 INFO L226 Difference]: Without dead ends: 58 [2021-11-12 22:38:38,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=637, Invalid=2443, Unknown=0, NotChecked=0, Total=3080 [2021-11-12 22:38:38,261 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 128 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 118.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.21ms SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 139.88ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:38,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 86 Invalid, 261 Unknown, 0 Unchecked, 1.21ms Time], IncrementalHoareTripleChecker [89 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 139.88ms Time] [2021-11-12 22:38:38,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-12 22:38:38,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2021-11-12 22:38:38,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 51 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:38,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2021-11-12 22:38:38,274 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 50 [2021-11-12 22:38:38,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:38,274 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2021-11-12 22:38:38,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.275) internal successors, (91), 40 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:38,275 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2021-11-12 22:38:38,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-12 22:38:38,277 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:38,277 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 1, 1, 1, 1, 1] [2021-11-12 22:38:38,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-12 22:38:38,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable493,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:38:38,497 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:38:38,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:38,498 INFO L85 PathProgramCache]: Analyzing trace with hash -362516351, now seen corresponding path program 19 times [2021-11-12 22:38:38,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:38:38,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079839818] [2021-11-12 22:38:38,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:38,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:38:38,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:39,109 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:39,109 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:38:39,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079839818] [2021-11-12 22:38:39,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079839818] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:38:39,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552885504] [2021-11-12 22:38:39,110 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-12 22:38:39,110 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:38:39,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:38:39,111 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:38:39,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-12 22:38:39,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:39,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-12 22:38:39,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:38:39,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-12 22:38:39,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 26 [2021-11-12 22:38:39,914 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:39,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:38:40,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:38:40,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:38:40,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:38:40,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:38:40,309 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:40,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552885504] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:38:40,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [69085457] [2021-11-12 22:38:40,312 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:38:40,312 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:38:40,312 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:38:40,313 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:38:40,313 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:38:40,317 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:40,318 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:40,318 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:40,319 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:38:40,319 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:40,319 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:40,320 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:38:40,321 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:38:40,322 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_68|], 10=[|v_#valid_75|]} [2021-11-12 22:38:40,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:40,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:38:40,329 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:40,329 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:38:40,329 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:40,330 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:38:40,330 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:40,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:40,332 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:40,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:40,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:40,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:40,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:40,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:38:40,342 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:40,343 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:38:40,344 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:40,344 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:38:40,345 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:40,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:40,347 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:40,347 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:40,348 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:38:40,349 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:40,349 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:38:40,352 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:38:40,353 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:40,353 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:40,354 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:38:40,354 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:40,355 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:40,355 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:38:40,357 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:38:40,359 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_69|], 10=[|v_#valid_76|]} [2021-11-12 22:38:40,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:40,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:40,372 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:38:40,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:38:40,373 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:40,374 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:40,374 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:40,375 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:40,375 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:40,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:40,378 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:40,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:40,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:40,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:40,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:38:40,392 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:40,394 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:38:40,394 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:40,395 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:38:40,395 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:40,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:40,398 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:40,399 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:40,401 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:38:40,401 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:40,401 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:38:40,403 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:40,405 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:40,405 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:40,406 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 22:38:40,408 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-12 22:38:40,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:40,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:40,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-12 22:38:40,419 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:40,420 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:38:40,421 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:40,421 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:38:40,422 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:40,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:40,425 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:40,427 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:40,428 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-12 22:38:40,428 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:40,429 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:123, output treesize:119 [2021-11-12 22:38:40,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:40,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:40,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:40,459 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:40,465 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:40,468 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:40,469 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:40,469 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:40,470 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-12 22:38:40,471 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:40,471 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:40,472 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:38:40,474 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 271 [2021-11-12 22:38:40,483 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:40,486 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:40,488 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 250 [2021-11-12 22:38:40,491 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 308 [2021-11-12 22:38:40,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:40,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:40,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:40,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2021-11-12 22:38:40,523 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:40,524 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:38:40,525 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:40,525 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:38:40,525 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:40,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:40,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:40,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:38:40,541 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:40,542 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:40,542 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:40,543 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:40,543 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:40,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:40,561 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:40,571 INFO L180 QuantifierPusher]: treesize reduction 97, result has 73.9 percent of original size [2021-11-12 22:38:40,574 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:38:40,574 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:38:40,575 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:379, output treesize:274 [2021-11-12 22:38:40,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:40,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:40,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:40,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:40,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:40,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:40,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:40,622 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:38:40,623 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:40,623 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:40,623 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:40,625 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:38:40,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:38:40,629 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:40,630 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:38:40,630 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:40,631 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:38:40,631 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:40,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:40,633 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:40,634 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:40,634 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:38:40,635 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:40,635 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:38:40,640 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:38:40,641 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:38:40,645 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:40,647 INFO L185 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size 71 [2021-11-12 22:38:40,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:40,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:40,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:40,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:40,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:40,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:40,665 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:40,668 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-12 22:38:40,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:40,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:40,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:40,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:40,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:40,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:40,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:40,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:40,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:40,692 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:38:40,693 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:38:40,697 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:38:41,269 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:38:41,269 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:38:41,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 41 [2021-11-12 22:38:41,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149586416] [2021-11-12 22:38:41,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:38:41,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-11-12 22:38:41,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:38:41,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-11-12 22:38:41,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1948, Unknown=0, NotChecked=0, Total=2070 [2021-11-12 22:38:41,272 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand has 41 states, 41 states have (on average 2.1707317073170733) internal successors, (89), 41 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:42,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:42,205 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2021-11-12 22:38:42,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-12 22:38:42,205 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.1707317073170733) internal successors, (89), 41 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-12 22:38:42,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:42,206 INFO L225 Difference]: With dead ends: 59 [2021-11-12 22:38:42,206 INFO L226 Difference]: Without dead ends: 57 [2021-11-12 22:38:42,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 129 SyntacticMatches, 6 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=226, Invalid=3434, Unknown=0, NotChecked=0, Total=3660 [2021-11-12 22:38:42,207 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 21 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 488.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.64ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 592.68ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:42,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 391 Invalid, 1381 Unknown, 0 Unchecked, 2.64ms Time], IncrementalHoareTripleChecker [51 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 592.68ms Time] [2021-11-12 22:38:42,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-12 22:38:42,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2021-11-12 22:38:42,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.037037037037037) internal successors, (56), 54 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:42,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2021-11-12 22:38:42,216 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 51 [2021-11-12 22:38:42,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:42,216 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2021-11-12 22:38:42,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.1707317073170733) internal successors, (89), 41 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:42,217 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2021-11-12 22:38:42,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-12 22:38:42,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:42,218 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 1, 1, 1, 1, 1] [2021-11-12 22:38:42,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-12 22:38:42,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable526,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:38:42,446 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:38:42,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:42,446 INFO L85 PathProgramCache]: Analyzing trace with hash 2122930268, now seen corresponding path program 20 times [2021-11-12 22:38:42,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:38:42,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061420334] [2021-11-12 22:38:42,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:42,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:38:42,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:42,802 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 188 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:42,803 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:38:42,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061420334] [2021-11-12 22:38:42,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061420334] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:38:42,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817335840] [2021-11-12 22:38:42,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 22:38:42,803 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:38:42,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:38:42,804 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:38:42,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-12 22:38:43,411 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2021-11-12 22:38:43,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:38:43,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-12 22:38:43,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:38:43,934 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 222 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:43,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:38:44,050 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 222 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:44,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817335840] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:38:44,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1826598825] [2021-11-12 22:38:44,052 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:38:44,052 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:38:44,052 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:38:44,052 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:38:44,053 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:38:44,060 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:44,060 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:44,061 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:44,061 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:38:44,061 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:44,062 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:44,062 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:38:44,063 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:38:44,064 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_71|], 10=[|v_#valid_78|]} [2021-11-12 22:38:44,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:44,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:38:44,069 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:44,069 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:38:44,069 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:44,070 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:38:44,070 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:44,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:44,071 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:44,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:44,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:44,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:44,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:44,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:38:44,079 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:44,080 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:38:44,081 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:44,081 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:38:44,081 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:44,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:44,083 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:44,083 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:44,084 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:38:44,084 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:44,084 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:38:44,087 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:38:44,087 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:44,088 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:44,088 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:38:44,088 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:44,089 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:44,089 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:38:44,090 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:38:44,092 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_72|], 10=[|v_#valid_79|]} [2021-11-12 22:38:44,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:44,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:44,102 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:38:44,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:38:44,103 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:44,104 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:44,104 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:44,105 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:44,105 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:44,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:44,107 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:44,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:44,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:44,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:44,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:38:44,116 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:44,118 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:38:44,118 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:44,118 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:38:44,118 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:44,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:44,121 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:44,121 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:44,122 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:38:44,122 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:44,122 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:38:44,124 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:44,125 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:44,125 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:44,126 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 22:38:44,140 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-12 22:38:44,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:44,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:44,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-12 22:38:44,153 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:44,154 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:38:44,155 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:44,155 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:38:44,155 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:44,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:44,157 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:44,158 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:44,159 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-12 22:38:44,159 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:44,160 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:123, output treesize:119 [2021-11-12 22:38:44,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:44,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:44,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:44,180 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:44,184 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:44,185 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:44,186 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:44,186 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:44,187 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-12 22:38:44,187 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:44,188 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:44,188 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:38:44,190 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 271 [2021-11-12 22:38:44,190 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:44,191 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:44,193 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 250 [2021-11-12 22:38:44,195 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 308 [2021-11-12 22:38:44,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:44,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:44,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:38:44,210 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:44,211 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:44,211 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:44,212 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:44,212 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:44,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:44,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:44,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:44,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2021-11-12 22:38:44,225 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:44,226 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:38:44,227 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:44,227 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:38:44,227 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:44,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:44,238 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:44,266 INFO L180 QuantifierPusher]: treesize reduction 97, result has 73.9 percent of original size [2021-11-12 22:38:44,269 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:38:44,270 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:38:44,270 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:379, output treesize:274 [2021-11-12 22:38:44,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:44,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:44,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:44,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:44,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:44,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:44,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:44,303 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:38:44,304 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:44,305 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:44,305 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:44,307 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:38:44,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:38:44,312 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:44,312 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:38:44,313 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:44,313 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:38:44,313 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:44,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:44,315 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:44,316 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:44,317 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:38:44,317 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:44,317 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:38:44,322 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:38:44,323 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:38:44,326 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:44,328 INFO L185 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size 71 [2021-11-12 22:38:44,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:44,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:44,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:44,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:44,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:44,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:44,354 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:44,357 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-12 22:38:44,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:44,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:44,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:44,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:44,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:44,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:44,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:44,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:44,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:44,383 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:38:44,385 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:38:44,391 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:38:45,033 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:38:45,033 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:38:45,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 43 [2021-11-12 22:38:45,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783176239] [2021-11-12 22:38:45,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:38:45,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-11-12 22:38:45,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:38:45,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-11-12 22:38:45,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=452, Invalid=1804, Unknown=0, NotChecked=0, Total=2256 [2021-11-12 22:38:45,035 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand has 43 states, 43 states have (on average 2.2790697674418605) internal successors, (98), 43 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:45,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:45,309 INFO L93 Difference]: Finished difference Result 104 states and 106 transitions. [2021-11-12 22:38:45,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-12 22:38:45,310 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.2790697674418605) internal successors, (98), 43 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-12 22:38:45,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:45,310 INFO L225 Difference]: With dead ends: 104 [2021-11-12 22:38:45,310 INFO L226 Difference]: Without dead ends: 62 [2021-11-12 22:38:45,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 985 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=734, Invalid=2806, Unknown=0, NotChecked=0, Total=3540 [2021-11-12 22:38:45,311 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 108 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 106.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.10ms SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 128.15ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:45,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 108 Invalid, 281 Unknown, 0 Unchecked, 1.10ms Time], IncrementalHoareTripleChecker [69 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 128.15ms Time] [2021-11-12 22:38:45,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-12 22:38:45,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2021-11-12 22:38:45,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 55 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:45,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2021-11-12 22:38:45,318 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 54 [2021-11-12 22:38:45,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:45,318 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2021-11-12 22:38:45,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.2790697674418605) internal successors, (98), 43 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:45,319 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2021-11-12 22:38:45,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-12 22:38:45,320 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:45,320 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 1, 1, 1, 1, 1] [2021-11-12 22:38:45,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-12 22:38:45,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable559,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:38:45,530 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:38:45,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:45,530 INFO L85 PathProgramCache]: Analyzing trace with hash -920717246, now seen corresponding path program 21 times [2021-11-12 22:38:45,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:38:45,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821836241] [2021-11-12 22:38:45,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:45,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:38:45,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:46,387 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 0 proven. 313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:46,387 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:38:46,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821836241] [2021-11-12 22:38:46,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821836241] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:38:46,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483278622] [2021-11-12 22:38:46,387 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-12 22:38:46,387 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:38:46,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:38:46,392 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:38:46,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-12 22:38:46,448 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-12 22:38:46,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:38:46,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 58 conjunts are in the unsatisfiable core [2021-11-12 22:38:46,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:38:46,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-12 22:38:47,479 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 0 proven. 313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:47,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:38:48,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:38:48,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:38:48,291 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 0 proven. 313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:48,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483278622] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:38:48,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2007265215] [2021-11-12 22:38:48,293 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:38:48,293 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:38:48,293 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:38:48,293 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:38:48,293 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:38:48,295 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:48,296 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:48,296 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:48,297 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:38:48,297 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:48,297 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:48,298 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:38:48,299 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:38:48,300 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_74|], 10=[|v_#valid_81|]} [2021-11-12 22:38:48,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:48,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:38:48,306 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:48,306 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:38:48,307 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:48,307 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:38:48,307 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:48,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:48,310 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:48,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:48,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:48,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:48,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:48,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:38:48,321 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:48,324 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:38:48,325 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:48,326 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:38:48,326 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:48,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:48,340 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:48,341 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:48,342 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:38:48,342 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:48,343 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:38:48,346 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:38:48,348 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:48,349 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:48,350 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:38:48,351 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:48,351 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:48,352 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:38:48,353 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:38:48,357 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_75|], 10=[|v_#valid_82|]} [2021-11-12 22:38:48,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:48,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:48,370 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:38:48,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:38:48,371 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:48,372 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:48,373 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:48,373 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:48,374 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:48,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:48,377 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:48,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:48,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:48,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:48,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:38:48,390 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:48,392 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:38:48,392 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:48,393 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:38:48,393 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:48,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:48,396 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:48,397 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:48,399 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:38:48,399 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:48,399 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:38:48,402 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:48,403 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:48,404 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:48,405 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 22:38:48,406 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-12 22:38:48,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:48,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:48,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-12 22:38:48,418 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:48,419 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:38:48,420 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:48,420 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:38:48,420 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:48,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:48,424 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:48,425 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:48,427 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-12 22:38:48,427 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:48,428 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:123, output treesize:119 [2021-11-12 22:38:48,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:48,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:48,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:48,460 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:48,465 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:48,468 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:48,469 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:48,469 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:48,470 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-12 22:38:48,470 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:48,471 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:48,471 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:38:48,474 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 271 [2021-11-12 22:38:48,474 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:48,476 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:48,479 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 250 [2021-11-12 22:38:48,482 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 308 [2021-11-12 22:38:48,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:48,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:48,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:48,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2021-11-12 22:38:48,503 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:48,504 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:38:48,505 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:48,513 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:38:48,513 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:48,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:48,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:48,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:38:48,526 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:48,526 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:48,527 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:48,527 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:48,527 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:48,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:48,547 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:48,556 INFO L180 QuantifierPusher]: treesize reduction 97, result has 73.9 percent of original size [2021-11-12 22:38:48,559 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:38:48,560 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:38:48,560 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:379, output treesize:274 [2021-11-12 22:38:48,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:48,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:48,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:48,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:48,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:48,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:48,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:48,600 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:38:48,602 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:48,602 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:48,603 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:48,604 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:38:48,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:38:48,609 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:48,610 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:38:48,610 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:48,611 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:38:48,611 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:48,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:48,613 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:48,614 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:48,615 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:38:48,616 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:48,616 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:38:48,620 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:38:48,622 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:38:48,624 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:48,626 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-12 22:38:48,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:48,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:48,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:48,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:48,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:48,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:48,648 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:38:48,651 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:38:48,657 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:38:49,469 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:38:49,469 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:38:49,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 71 [2021-11-12 22:38:49,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113674538] [2021-11-12 22:38:49,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:38:49,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2021-11-12 22:38:49,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:38:49,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-11-12 22:38:49,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=5450, Unknown=0, NotChecked=0, Total=5700 [2021-11-12 22:38:49,475 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 71 states, 71 states have (on average 2.056338028169014) internal successors, (146), 71 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:51,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:51,104 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2021-11-12 22:38:51,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-12 22:38:51,105 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.056338028169014) internal successors, (146), 71 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-12 22:38:51,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:51,106 INFO L225 Difference]: With dead ends: 63 [2021-11-12 22:38:51,106 INFO L226 Difference]: Without dead ends: 61 [2021-11-12 22:38:51,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 118 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2089 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=391, Invalid=7981, Unknown=0, NotChecked=0, Total=8372 [2021-11-12 22:38:51,107 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 43 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 1896 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 676.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 1981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.90ms SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 815.19ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:51,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 599 Invalid, 1981 Unknown, 0 Unchecked, 3.90ms Time], IncrementalHoareTripleChecker [85 Valid, 1896 Invalid, 0 Unknown, 0 Unchecked, 815.19ms Time] [2021-11-12 22:38:51,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-11-12 22:38:51,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2021-11-12 22:38:51,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 58 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:51,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2021-11-12 22:38:51,117 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 55 [2021-11-12 22:38:51,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:51,118 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2021-11-12 22:38:51,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.056338028169014) internal successors, (146), 71 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:51,118 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2021-11-12 22:38:51,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-12 22:38:51,119 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:51,119 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 1, 1, 1, 1, 1] [2021-11-12 22:38:51,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-12 22:38:51,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable592,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:38:51,322 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:38:51,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:51,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1421529861, now seen corresponding path program 22 times [2021-11-12 22:38:51,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:38:51,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492134583] [2021-11-12 22:38:51,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:51,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:38:51,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:51,712 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 223 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:51,713 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:38:51,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492134583] [2021-11-12 22:38:51,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492134583] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:38:51,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507269771] [2021-11-12 22:38:51,713 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-12 22:38:51,713 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:38:51,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:38:51,718 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:38:51,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-12 22:38:51,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:51,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-12 22:38:51,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:38:52,477 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 260 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:52,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:38:52,623 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 260 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:52,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507269771] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:38:52,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [126293638] [2021-11-12 22:38:52,625 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:38:52,625 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:38:52,625 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:38:52,626 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:38:52,626 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:38:52,643 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:52,644 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:52,644 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:52,645 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:38:52,645 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:52,646 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:52,646 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:38:52,647 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:38:52,649 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_77|], 10=[|v_#valid_84|]} [2021-11-12 22:38:52,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:52,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:38:52,655 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:52,655 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:38:52,656 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:52,656 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:38:52,657 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:52,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:52,659 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:52,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:52,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:52,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:52,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:52,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:38:52,668 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:52,669 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:38:52,670 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:52,670 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:38:52,670 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:52,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:52,672 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:52,673 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:52,674 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:38:52,675 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:52,675 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:38:52,679 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:38:52,679 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:52,680 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:52,680 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:38:52,681 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:52,681 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:52,682 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:38:52,683 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:38:52,685 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_78|], 10=[|v_#valid_85|]} [2021-11-12 22:38:52,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:52,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:52,696 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:38:52,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:38:52,700 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:52,701 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:52,702 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:52,702 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:52,702 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:52,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:52,705 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:52,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:52,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:52,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:52,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:38:52,716 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:52,718 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:38:52,719 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:52,719 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:38:52,720 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:52,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:52,723 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:52,728 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:52,729 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:38:52,730 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:52,730 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:38:52,732 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:52,734 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:52,734 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:52,735 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 22:38:52,736 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-12 22:38:52,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:52,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:52,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-12 22:38:52,747 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:52,748 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:38:52,748 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:52,749 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:38:52,749 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:52,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:52,753 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:52,755 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:52,756 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-12 22:38:52,757 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:52,757 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:123, output treesize:119 [2021-11-12 22:38:52,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:52,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:52,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:52,789 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:52,796 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:52,798 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:52,799 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:52,800 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:52,800 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:38:52,801 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:52,801 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:52,802 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-12 22:38:52,804 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 271 [2021-11-12 22:38:52,806 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:52,818 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:52,821 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 250 [2021-11-12 22:38:52,824 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 308 [2021-11-12 22:38:52,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:52,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:52,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:52,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2021-11-12 22:38:52,850 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:52,852 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:38:52,852 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:52,853 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:38:52,853 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:52,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:52,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:52,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:38:52,867 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:52,868 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:52,868 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:52,869 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:52,869 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:52,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:52,887 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:52,895 INFO L180 QuantifierPusher]: treesize reduction 97, result has 73.9 percent of original size [2021-11-12 22:38:52,898 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:38:52,899 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:38:52,899 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:379, output treesize:274 [2021-11-12 22:38:52,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:52,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:52,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:52,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:52,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:52,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:52,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:52,934 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:38:52,936 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:52,936 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:52,937 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:52,938 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:38:52,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:38:52,944 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:52,944 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:38:52,944 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:52,945 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:38:52,945 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:52,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:52,947 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:52,948 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:52,949 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:38:52,949 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:52,949 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:38:52,957 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:38:52,959 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:38:52,961 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:52,962 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-12 22:38:52,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:52,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:52,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:52,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:52,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:52,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:52,978 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:38:52,981 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:38:52,987 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:38:53,600 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:38:53,601 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:38:53,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 46 [2021-11-12 22:38:53,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213576784] [2021-11-12 22:38:53,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:38:53,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-12 22:38:53,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:38:53,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-12 22:38:53,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=513, Invalid=2037, Unknown=0, NotChecked=0, Total=2550 [2021-11-12 22:38:53,602 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand has 46 states, 46 states have (on average 2.282608695652174) internal successors, (105), 46 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:53,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:53,903 INFO L93 Difference]: Finished difference Result 111 states and 113 transitions. [2021-11-12 22:38:53,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-12 22:38:53,903 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.282608695652174) internal successors, (105), 46 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-12 22:38:53,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:53,904 INFO L225 Difference]: With dead ends: 111 [2021-11-12 22:38:53,904 INFO L226 Difference]: Without dead ends: 66 [2021-11-12 22:38:53,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1117 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=838, Invalid=3194, Unknown=0, NotChecked=0, Total=4032 [2021-11-12 22:38:53,905 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 120 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 121.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.06ms SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 146.20ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:53,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 124 Invalid, 319 Unknown, 0 Unchecked, 1.06ms Time], IncrementalHoareTripleChecker [77 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 146.20ms Time] [2021-11-12 22:38:53,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-11-12 22:38:53,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60. [2021-11-12 22:38:53,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 59 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:53,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2021-11-12 22:38:53,913 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 58 [2021-11-12 22:38:53,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:53,913 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2021-11-12 22:38:53,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.282608695652174) internal successors, (105), 46 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:53,914 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2021-11-12 22:38:53,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-12 22:38:53,914 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:53,914 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 1, 1, 1, 1, 1] [2021-11-12 22:38:53,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-12 22:38:54,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable616 [2021-11-12 22:38:54,115 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:38:54,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:54,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1889298913, now seen corresponding path program 23 times [2021-11-12 22:38:54,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:38:54,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551873250] [2021-11-12 22:38:54,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:54,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:38:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:38:55,053 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:55,053 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:38:55,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551873250] [2021-11-12 22:38:55,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551873250] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:38:55,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085700698] [2021-11-12 22:38:55,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 22:38:55,054 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:38:55,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:38:55,058 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:38:55,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-12 22:38:55,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-11-12 22:38:55,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:38:55,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 62 conjunts are in the unsatisfiable core [2021-11-12 22:38:55,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:38:55,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-12 22:38:56,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 26 [2021-11-12 22:38:56,717 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:56,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:38:57,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:38:57,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:38:57,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:38:57,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:38:57,217 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:38:57,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085700698] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:38:57,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1151299495] [2021-11-12 22:38:57,218 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:38:57,218 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:38:57,218 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:38:57,219 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:38:57,219 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:38:57,221 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:57,222 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:57,222 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:57,222 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:38:57,223 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:57,223 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:57,223 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:38:57,235 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:38:57,237 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_80|], 10=[|v_#valid_87|]} [2021-11-12 22:38:57,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:57,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:38:57,242 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:57,242 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:38:57,242 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:57,242 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:38:57,243 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:57,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:57,244 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:57,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:57,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:57,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:57,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:57,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:38:57,269 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:57,270 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:38:57,270 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:57,270 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:38:57,271 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:57,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:57,272 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:57,273 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:57,279 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:38:57,280 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:57,280 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:38:57,282 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:38:57,283 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:57,283 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:57,283 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:38:57,284 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:57,284 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:57,284 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:38:57,285 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:38:57,287 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_81|], 10=[|v_#valid_88|]} [2021-11-12 22:38:57,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:57,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:57,318 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:38:57,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:38:57,319 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:57,320 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:57,321 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:57,321 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:57,322 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:57,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:57,325 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:57,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:57,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:57,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:57,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:38:57,335 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:57,336 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:38:57,336 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:57,337 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:38:57,337 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:57,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:57,345 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:57,346 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:57,347 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:38:57,347 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:57,347 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:38:57,348 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:57,349 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:57,350 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:57,350 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:38:57,351 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-11-12 22:38:57,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:57,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:57,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:38:57,360 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:57,361 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:57,363 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:57,364 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:57,364 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:57,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:57,378 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:57,379 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:57,381 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-11-12 22:38:57,381 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:57,381 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:125, output treesize:121 [2021-11-12 22:38:57,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:57,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:57,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:57,409 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:57,415 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:57,418 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:57,419 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:57,419 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:57,420 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:38:57,421 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:57,421 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:57,422 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-12 22:38:57,424 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 275 [2021-11-12 22:38:57,425 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:57,427 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:57,430 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 254 [2021-11-12 22:38:57,433 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 312 [2021-11-12 22:38:57,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:57,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:57,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:57,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 56 [2021-11-12 22:38:57,456 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:57,457 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-12 22:38:57,458 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:57,458 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-12 22:38:57,459 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:57,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:57,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:38:57,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:38:57,473 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:57,474 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:57,475 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:57,475 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:38:57,475 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:57,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:57,487 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:57,496 INFO L180 QuantifierPusher]: treesize reduction 94, result has 74.9 percent of original size [2021-11-12 22:38:57,499 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 281 [2021-11-12 22:38:57,500 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:38:57,500 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:383, output treesize:281 [2021-11-12 22:38:57,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:57,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:57,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:57,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:57,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:57,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:57,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:57,532 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:38:57,533 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:38:57,534 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:57,534 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:38:57,535 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:38:57,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:38:57,541 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:57,541 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:38:57,541 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:57,542 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:38:57,542 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:38:57,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:57,544 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:57,545 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:57,546 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:38:57,546 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:38:57,546 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:38:57,550 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:38:57,551 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:38:57,553 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:57,555 INFO L185 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size 71 [2021-11-12 22:38:57,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:57,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:57,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:57,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:57,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:57,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:57,572 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:38:57,576 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-12 22:38:57,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:57,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:57,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:57,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:57,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:57,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:57,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:57,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:57,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:38:57,601 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:38:57,603 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:38:57,609 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:38:58,241 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:38:58,241 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:38:58,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 47 [2021-11-12 22:38:58,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984707392] [2021-11-12 22:38:58,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:38:58,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-11-12 22:38:58,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:38:58,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-11-12 22:38:58,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=2514, Unknown=0, NotChecked=0, Total=2652 [2021-11-12 22:38:58,242 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand has 47 states, 47 states have (on average 2.1914893617021276) internal successors, (103), 47 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:59,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:38:59,422 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2021-11-12 22:38:59,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-12 22:38:59,423 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.1914893617021276) internal successors, (103), 47 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-12 22:38:59,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:38:59,424 INFO L225 Difference]: With dead ends: 67 [2021-11-12 22:38:59,424 INFO L226 Difference]: Without dead ends: 65 [2021-11-12 22:38:59,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 151 SyntacticMatches, 6 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=256, Invalid=4436, Unknown=0, NotChecked=0, Total=4692 [2021-11-12 22:38:59,425 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 24 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 1728 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 619.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 1788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.27ms SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 740.58ms IncrementalHoareTripleChecker+Time [2021-11-12 22:38:59,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 538 Invalid, 1788 Unknown, 0 Unchecked, 3.27ms Time], IncrementalHoareTripleChecker [60 Valid, 1728 Invalid, 0 Unknown, 0 Unchecked, 740.58ms Time] [2021-11-12 22:38:59,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-11-12 22:38:59,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2021-11-12 22:38:59,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.032258064516129) internal successors, (64), 62 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:59,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2021-11-12 22:38:59,433 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 59 [2021-11-12 22:38:59,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:38:59,433 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2021-11-12 22:38:59,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.1914893617021276) internal successors, (103), 47 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:38:59,433 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2021-11-12 22:38:59,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-12 22:38:59,434 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:38:59,434 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 1, 1, 1, 1, 1] [2021-11-12 22:38:59,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-12 22:38:59,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable640 [2021-11-12 22:38:59,654 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:38:59,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:38:59,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1437703428, now seen corresponding path program 24 times [2021-11-12 22:38:59,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:38:59,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789720145] [2021-11-12 22:38:59,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:38:59,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:38:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:39:00,100 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 261 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:00,100 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:39:00,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789720145] [2021-11-12 22:39:00,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789720145] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:39:00,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664773204] [2021-11-12 22:39:00,101 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-12 22:39:00,101 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:39:00,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:39:00,102 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:39:00,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-12 22:39:00,177 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-12 22:39:00,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:39:00,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-12 22:39:00,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:00,975 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 301 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:00,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:39:01,178 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 301 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:01,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664773204] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:39:01,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [557239330] [2021-11-12 22:39:01,180 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:39:01,180 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:39:01,180 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:39:01,180 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:39:01,181 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:39:01,183 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:01,184 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:39:01,184 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:01,185 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:39:01,185 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:39:01,186 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:01,186 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:39:01,187 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:39:01,189 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_83|], 10=[|v_#valid_90|]} [2021-11-12 22:39:01,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:01,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:39:01,198 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:01,198 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:39:01,199 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:01,199 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:39:01,199 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:39:01,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:01,202 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:01,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:01,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:01,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:01,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:01,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:39:01,213 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:01,214 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:39:01,215 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:01,216 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:39:01,216 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:39:01,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:01,227 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:01,228 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:01,229 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:39:01,230 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:39:01,230 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:39:01,234 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:39:01,235 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:39:01,235 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:01,236 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:39:01,236 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:39:01,237 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:01,237 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:39:01,239 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:39:01,241 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_84|], 10=[|v_#valid_91|]} [2021-11-12 22:39:01,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:01,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:01,254 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:39:01,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:39:01,255 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:01,256 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:39:01,257 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:01,258 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:39:01,258 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:39:01,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:01,261 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:01,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:01,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:01,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:01,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:39:01,273 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:01,275 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:39:01,276 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:01,276 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:39:01,276 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:39:01,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:01,280 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:01,281 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:01,282 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:39:01,283 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:39:01,283 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:39:01,285 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:01,286 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:39:01,287 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:01,288 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:39:01,289 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-11-12 22:39:01,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:01,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:01,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:39:01,301 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:01,302 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:39:01,303 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:01,303 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:39:01,303 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:39:01,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:01,307 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:01,309 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:01,310 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-11-12 22:39:01,311 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:39:01,311 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:132, output treesize:128 [2021-11-12 22:39:01,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:01,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:01,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:01,347 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:01,353 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:39:01,355 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:01,356 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:39:01,357 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:01,357 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:39:01,358 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:39:01,359 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:01,360 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-12 22:39:01,362 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:39:01,363 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:39:01,365 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:01,368 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 253 [2021-11-12 22:39:01,371 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 314 [2021-11-12 22:39:01,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:01,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:01,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:01,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 56 [2021-11-12 22:39:01,395 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:01,397 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-12 22:39:01,397 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:01,398 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-12 22:39:01,398 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:39:01,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:01,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:01,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:39:01,413 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:01,414 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:39:01,414 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:01,415 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:39:01,415 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:39:01,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:01,433 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:01,443 INFO L180 QuantifierPusher]: treesize reduction 99, result has 73.9 percent of original size [2021-11-12 22:39:01,446 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 281 [2021-11-12 22:39:01,447 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:39:01,447 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:388, output treesize:281 [2021-11-12 22:39:01,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:01,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:01,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:01,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:01,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:01,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:01,478 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:39:01,480 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:39:01,480 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:01,481 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:39:01,482 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:39:01,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:39:01,488 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:01,488 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:39:01,488 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:01,489 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:39:01,489 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:39:01,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:01,491 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:01,492 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:01,493 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:39:01,493 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:39:01,493 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:39:01,497 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:39:01,499 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:39:01,501 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:01,503 INFO L185 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size 71 [2021-11-12 22:39:01,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:01,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:01,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:01,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:01,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:01,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:01,523 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:01,526 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-12 22:39:01,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:01,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:01,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:01,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:01,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:01,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:01,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:01,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:01,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:01,553 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:39:01,555 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:39:01,559 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:39:02,071 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:39:02,077 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:39:02,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 49 [2021-11-12 22:39:02,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862959833] [2021-11-12 22:39:02,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:39:02,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-11-12 22:39:02,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:39:02,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-11-12 22:39:02,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=578, Invalid=2284, Unknown=0, NotChecked=0, Total=2862 [2021-11-12 22:39:02,079 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand has 49 states, 49 states have (on average 2.2857142857142856) internal successors, (112), 49 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:02,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:39:02,436 INFO L93 Difference]: Finished difference Result 118 states and 120 transitions. [2021-11-12 22:39:02,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-12 22:39:02,436 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.2857142857142856) internal successors, (112), 49 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-12 22:39:02,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:39:02,437 INFO L225 Difference]: With dead ends: 118 [2021-11-12 22:39:02,438 INFO L226 Difference]: Without dead ends: 70 [2021-11-12 22:39:02,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1257 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=949, Invalid=3607, Unknown=0, NotChecked=0, Total=4556 [2021-11-12 22:39:02,439 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 200 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 125.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.41ms SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 158.09ms IncrementalHoareTripleChecker+Time [2021-11-12 22:39:02,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 116 Invalid, 350 Unknown, 0 Unchecked, 1.41ms Time], IncrementalHoareTripleChecker [119 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 158.09ms Time] [2021-11-12 22:39:02,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-11-12 22:39:02,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2021-11-12 22:39:02,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 63 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:02,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2021-11-12 22:39:02,452 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 62 [2021-11-12 22:39:02,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:39:02,453 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2021-11-12 22:39:02,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.2857142857142856) internal successors, (112), 49 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:02,453 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2021-11-12 22:39:02,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-12 22:39:02,454 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:39:02,454 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 1, 1, 1, 1, 1] [2021-11-12 22:39:02,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-12 22:39:02,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable673,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:39:02,670 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:39:02,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:39:02,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1179696354, now seen corresponding path program 25 times [2021-11-12 22:39:02,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:39:02,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299358366] [2021-11-12 22:39:02,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:02,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:39:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:39:03,746 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 0 proven. 421 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:03,746 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:39:03,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299358366] [2021-11-12 22:39:03,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299358366] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:39:03,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723133300] [2021-11-12 22:39:03,747 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-12 22:39:03,747 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:39:03,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:39:03,748 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:39:03,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-12 22:39:03,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:39:03,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 66 conjunts are in the unsatisfiable core [2021-11-12 22:39:03,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:03,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-12 22:39:04,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 26 [2021-11-12 22:39:04,880 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 0 proven. 421 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:04,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:39:05,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:39:05,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:39:05,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:39:05,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:39:05,316 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 0 proven. 421 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:05,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723133300] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:39:05,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1319950750] [2021-11-12 22:39:05,317 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:39:05,317 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:39:05,318 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:39:05,318 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:39:05,318 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:39:05,339 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:05,339 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:39:05,340 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:05,340 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:39:05,340 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:39:05,341 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:05,341 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:39:05,342 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:39:05,343 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_86|], 10=[|v_#valid_93|]} [2021-11-12 22:39:05,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:05,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:39:05,348 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:05,349 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:39:05,349 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:05,349 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:39:05,350 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:39:05,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:05,351 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:05,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:05,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:05,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:05,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:05,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:39:05,359 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:05,360 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:39:05,361 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:05,361 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:39:05,361 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:39:05,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:05,363 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:05,363 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:05,364 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:39:05,364 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:39:05,364 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:39:05,367 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:39:05,367 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:39:05,371 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:05,372 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:39:05,372 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:39:05,373 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:05,373 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:39:05,374 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:39:05,376 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_87|], 10=[|v_#valid_94|]} [2021-11-12 22:39:05,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:05,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:05,386 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:39:05,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:39:05,387 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:05,388 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:39:05,388 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:05,389 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:39:05,389 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:39:05,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:05,391 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:05,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:05,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:05,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:05,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:39:05,401 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:05,403 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:39:05,403 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:05,404 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:39:05,404 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:39:05,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:05,406 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:05,407 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:05,408 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:39:05,408 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:39:05,408 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:39:05,410 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:05,411 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:39:05,412 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:05,412 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:39:05,413 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-11-12 22:39:05,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:05,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:05,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:39:05,425 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:05,426 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:39:05,426 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:05,427 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:39:05,427 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:39:05,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:05,429 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:05,430 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:05,431 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-11-12 22:39:05,431 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:39:05,431 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:132, output treesize:128 [2021-11-12 22:39:05,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:05,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:05,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:05,456 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:05,459 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:39:05,462 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:05,462 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:39:05,463 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:05,463 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-12 22:39:05,463 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:39:05,464 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:05,464 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:39:05,466 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:39:05,466 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:39:05,467 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:05,468 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 253 [2021-11-12 22:39:05,470 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 314 [2021-11-12 22:39:05,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:05,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:05,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:05,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 56 [2021-11-12 22:39:05,491 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:05,492 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-12 22:39:05,492 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:05,493 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-12 22:39:05,493 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:39:05,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:05,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:05,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:39:05,504 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:05,505 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:39:05,506 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:05,506 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:39:05,506 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:39:05,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:05,517 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:05,532 INFO L180 QuantifierPusher]: treesize reduction 99, result has 73.9 percent of original size [2021-11-12 22:39:05,535 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 281 [2021-11-12 22:39:05,535 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:39:05,536 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:388, output treesize:281 [2021-11-12 22:39:05,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:05,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:05,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:05,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:05,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:05,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:05,564 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:39:05,565 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:39:05,566 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:05,566 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:39:05,567 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:39:05,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:39:05,572 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:05,573 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:39:05,573 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:05,573 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:39:05,574 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:39:05,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:05,575 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:05,576 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:05,577 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:39:05,578 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:39:05,578 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:39:05,582 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:39:05,583 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:39:05,586 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:05,588 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-12 22:39:05,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:05,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:05,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:05,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:05,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:05,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:05,601 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:39:05,603 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:39:05,609 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:39:06,310 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:39:06,310 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:39:06,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 50 [2021-11-12 22:39:06,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68569705] [2021-11-12 22:39:06,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:39:06,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-11-12 22:39:06,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:39:06,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-11-12 22:39:06,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=2824, Unknown=0, NotChecked=0, Total=2970 [2021-11-12 22:39:06,311 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand has 50 states, 50 states have (on average 2.2) internal successors, (110), 50 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:07,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:39:07,608 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2021-11-12 22:39:07,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-12 22:39:07,609 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.2) internal successors, (110), 50 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-12 22:39:07,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:39:07,610 INFO L225 Difference]: With dead ends: 71 [2021-11-12 22:39:07,610 INFO L226 Difference]: Without dead ends: 69 [2021-11-12 22:39:07,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 162 SyntacticMatches, 6 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=271, Invalid=4985, Unknown=0, NotChecked=0, Total=5256 [2021-11-12 22:39:07,611 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 26 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 1957 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 688.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 2022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.69ms SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 823.20ms IncrementalHoareTripleChecker+Time [2021-11-12 22:39:07,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 620 Invalid, 2022 Unknown, 0 Unchecked, 3.69ms Time], IncrementalHoareTripleChecker [65 Valid, 1957 Invalid, 0 Unknown, 0 Unchecked, 823.20ms Time] [2021-11-12 22:39:07,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-11-12 22:39:07,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2021-11-12 22:39:07,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 66 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:07,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2021-11-12 22:39:07,624 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 63 [2021-11-12 22:39:07,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:39:07,624 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2021-11-12 22:39:07,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.2) internal successors, (110), 50 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:07,625 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2021-11-12 22:39:07,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-12 22:39:07,626 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:39:07,626 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 1, 1, 1, 1, 1] [2021-11-12 22:39:07,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-12 22:39:07,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable705,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:39:07,834 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:39:07,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:39:07,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1378507685, now seen corresponding path program 26 times [2021-11-12 22:39:07,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:39:07,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969428034] [2021-11-12 22:39:07,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:07,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:39:07,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:39:08,354 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 302 proven. 163 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:08,355 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:39:08,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969428034] [2021-11-12 22:39:08,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969428034] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:39:08,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610892948] [2021-11-12 22:39:08,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 22:39:08,355 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:39:08,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:39:08,358 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:39:08,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-12 22:39:10,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-11-12 22:39:10,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:39:10,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-12 22:39:10,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:10,989 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 345 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:10,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:39:11,132 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 345 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:11,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610892948] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:39:11,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1390758217] [2021-11-12 22:39:11,134 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:39:11,134 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:39:11,135 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:39:11,135 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:39:11,135 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:39:11,146 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:11,146 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:39:11,147 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:11,147 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:39:11,147 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:39:11,148 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:11,148 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:39:11,148 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:39:11,150 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_89|], 10=[|v_#valid_96|]} [2021-11-12 22:39:11,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:11,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:39:11,154 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:11,154 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:39:11,155 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:11,155 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:39:11,155 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:39:11,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:11,156 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:11,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:11,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:11,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:11,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:11,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:39:11,164 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:11,165 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:39:11,165 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:11,165 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:39:11,166 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:39:11,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:11,167 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:11,167 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:11,168 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:39:11,168 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:39:11,168 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:39:11,170 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:39:11,171 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:39:11,171 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:11,171 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:39:11,172 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:39:11,172 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:11,172 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:39:11,173 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:39:11,174 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_90|], 10=[|v_#valid_97|]} [2021-11-12 22:39:11,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:11,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:11,184 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:39:11,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:39:11,184 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:11,185 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:39:11,185 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:11,186 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:39:11,186 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:39:11,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:11,188 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:11,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:11,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:11,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:11,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:39:11,195 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:11,197 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:39:11,197 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:11,197 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:39:11,197 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:39:11,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:11,199 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:11,200 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:11,201 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:39:11,201 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:39:11,201 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:39:11,202 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:11,203 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:39:11,204 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:11,204 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:39:11,205 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-11-12 22:39:11,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:11,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:11,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:39:11,212 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:11,213 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:39:11,213 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:11,214 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:39:11,214 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:39:11,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:11,216 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:11,217 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:11,217 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-11-12 22:39:11,218 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:39:11,218 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:132, output treesize:128 [2021-11-12 22:39:11,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:11,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:11,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:11,250 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:11,253 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:39:11,254 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:11,255 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:39:11,255 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:11,255 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:39:11,256 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:39:11,256 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:11,256 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-12 22:39:11,258 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:39:11,258 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:39:11,259 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:11,260 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 253 [2021-11-12 22:39:11,262 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 314 [2021-11-12 22:39:11,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:11,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:11,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:11,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 56 [2021-11-12 22:39:11,279 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:11,281 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-12 22:39:11,281 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:11,281 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-12 22:39:11,281 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:39:11,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:11,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:11,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:39:11,292 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:11,293 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:39:11,293 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:11,293 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:39:11,294 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:39:11,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:11,305 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:11,322 INFO L180 QuantifierPusher]: treesize reduction 97, result has 74.3 percent of original size [2021-11-12 22:39:11,325 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 281 [2021-11-12 22:39:11,326 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:39:11,326 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:388, output treesize:281 [2021-11-12 22:39:11,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:11,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:11,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:11,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:11,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:11,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:11,352 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:39:11,353 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:39:11,354 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:11,354 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:39:11,355 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:39:11,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:39:11,360 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:11,360 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:39:11,361 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:11,361 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:39:11,361 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:39:11,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:11,363 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:11,364 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:11,364 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:39:11,365 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:39:11,365 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:39:11,368 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:39:11,370 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:39:11,372 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:11,373 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-12 22:39:11,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:11,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:11,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:11,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:11,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:11,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:11,388 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:39:11,389 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:39:11,395 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:39:11,874 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:39:11,874 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:39:11,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 52 [2021-11-12 22:39:11,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509541319] [2021-11-12 22:39:11,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:39:11,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-11-12 22:39:11,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:39:11,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-11-12 22:39:11,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=647, Invalid=2545, Unknown=0, NotChecked=0, Total=3192 [2021-11-12 22:39:11,876 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand has 52 states, 52 states have (on average 2.2884615384615383) internal successors, (119), 52 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:12,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:39:12,186 INFO L93 Difference]: Finished difference Result 125 states and 127 transitions. [2021-11-12 22:39:12,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-12 22:39:12,187 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.2884615384615383) internal successors, (119), 52 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-12 22:39:12,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:39:12,187 INFO L225 Difference]: With dead ends: 125 [2021-11-12 22:39:12,188 INFO L226 Difference]: Without dead ends: 74 [2021-11-12 22:39:12,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1405 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1067, Invalid=4045, Unknown=0, NotChecked=0, Total=5112 [2021-11-12 22:39:12,188 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 156 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 121.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.06ms SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 145.82ms IncrementalHoareTripleChecker+Time [2021-11-12 22:39:12,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 150 Invalid, 394 Unknown, 0 Unchecked, 1.06ms Time], IncrementalHoareTripleChecker [94 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 145.82ms Time] [2021-11-12 22:39:12,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-12 22:39:12,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 68. [2021-11-12 22:39:12,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 67 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:12,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2021-11-12 22:39:12,197 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 66 [2021-11-12 22:39:12,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:39:12,198 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2021-11-12 22:39:12,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.2884615384615383) internal successors, (119), 52 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:39:12,198 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2021-11-12 22:39:12,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-12 22:39:12,198 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:39:12,199 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 1, 1, 1, 1, 1] [2021-11-12 22:39:12,222 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2021-11-12 22:39:12,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable728,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:39:12,406 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:39:12,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:39:12,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1806474049, now seen corresponding path program 27 times [2021-11-12 22:39:12,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:39:12,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124377683] [2021-11-12 22:39:12,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:12,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:39:12,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:39:13,369 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 0 proven. 481 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:13,369 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:39:13,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124377683] [2021-11-12 22:39:13,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124377683] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:39:13,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826988024] [2021-11-12 22:39:13,369 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-12 22:39:13,369 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:39:13,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:39:13,371 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:39:13,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-12 22:39:13,446 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-12 22:39:13,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:39:13,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 70 conjunts are in the unsatisfiable core [2021-11-12 22:39:13,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:13,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-12 22:39:14,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 26 [2021-11-12 22:39:14,531 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 0 proven. 481 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:14,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:39:14,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:39:14,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:39:14,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:39:14,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:39:14,986 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 0 proven. 481 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:14,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826988024] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:39:14,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [928438740] [2021-11-12 22:39:14,987 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:39:14,988 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:39:14,988 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:39:14,988 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:39:14,988 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:39:14,999 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:14,999 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:39:15,000 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:15,000 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:39:15,001 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:39:15,001 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:15,001 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:39:15,002 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:39:15,005 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_92|], 10=[|v_#valid_99|]} [2021-11-12 22:39:15,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:15,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:39:15,010 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:15,011 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:39:15,011 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:15,012 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:39:15,012 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:39:15,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:15,014 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:15,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:15,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:15,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:15,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:15,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:39:15,022 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:15,024 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:39:15,024 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:15,024 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:39:15,025 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:39:15,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:15,027 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:15,027 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:15,028 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:39:15,029 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:39:15,029 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:39:15,032 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:39:15,033 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:39:15,033 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:15,034 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:39:15,034 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:39:15,034 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:15,035 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:39:15,036 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:39:15,038 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_93|], 10=[|v_#valid_100|]} [2021-11-12 22:39:15,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:15,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:15,049 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:39:15,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:39:15,050 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:15,051 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:39:15,051 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:15,051 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:39:15,052 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:39:15,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:39:15,054 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:15,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:15,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:15,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:39:15,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:39:15,065 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:15,066 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:39:15,074 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:39:15,075 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:39:15,075 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:39:15,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms WARNING: YOUR LOGFILE WAS TOO LONG, SOME LINES IN THE MIDDLE WERE REMOVED. [2021-11-12 22:40:53,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:40:53,440 INFO L225 Difference]: With dead ends: 181 [2021-11-12 22:40:53,441 INFO L226 Difference]: Without dead ends: 106 [2021-11-12 22:40:53,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2877 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2263, Invalid=8449, Unknown=0, NotChecked=0, Total=10712 [2021-11-12 22:40:53,442 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 216 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 203.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.98ms SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 245.57ms IncrementalHoareTripleChecker+Time [2021-11-12 22:40:53,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 243 Invalid, 647 Unknown, 0 Unchecked, 1.98ms Time], IncrementalHoareTripleChecker [158 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 245.57ms Time] [2021-11-12 22:40:53,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-11-12 22:40:53,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 100. [2021-11-12 22:40:53,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.02020202020202) internal successors, (101), 99 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:40:53,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 101 transitions. [2021-11-12 22:40:53,458 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 101 transitions. Word has length 98 [2021-11-12 22:40:53,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:40:53,458 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 101 transitions. [2021-11-12 22:40:53,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 2.3026315789473686) internal successors, (175), 76 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:40:53,459 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 101 transitions. [2021-11-12 22:40:53,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-12 22:40:53,459 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:40:53,459 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 1, 1, 1, 1, 1] [2021-11-12 22:40:53,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-11-12 22:40:53,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1161,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:40:53,660 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:40:53,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:40:53,660 INFO L85 PathProgramCache]: Analyzing trace with hash 2098696385, now seen corresponding path program 43 times [2021-11-12 22:40:53,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:40:53,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680342536] [2021-11-12 22:40:53,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:40:53,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:40:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:40:55,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 0 proven. 1105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:40:55,753 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:40:55,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680342536] [2021-11-12 22:40:55,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680342536] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:40:55,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363262745] [2021-11-12 22:40:55,753 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-12 22:40:55,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:40:55,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:40:55,754 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:40:55,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-11-12 22:40:55,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:40:55,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 102 conjunts are in the unsatisfiable core [2021-11-12 22:40:55,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:40:55,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-12 22:40:58,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 26 [2021-11-12 22:40:58,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 0 proven. 1105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:40:58,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:40:58,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:40:58,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:40:58,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:40:58,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:40:59,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 0 proven. 1105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:40:59,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363262745] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:40:59,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [550840350] [2021-11-12 22:40:59,094 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:40:59,094 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:40:59,094 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:40:59,095 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:40:59,095 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:40:59,097 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:40:59,097 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:40:59,098 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:40:59,098 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:40:59,098 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:40:59,099 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:40:59,099 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:40:59,100 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:40:59,101 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_140|], 10=[|v_#valid_147|]} [2021-11-12 22:40:59,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:40:59,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:40:59,106 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:40:59,107 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:40:59,107 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:40:59,107 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:40:59,108 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:40:59,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:40:59,109 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:40:59,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:40:59,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:40:59,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:40:59,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:40:59,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:40:59,118 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:40:59,119 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:40:59,119 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:40:59,120 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:40:59,120 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:40:59,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:40:59,122 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:40:59,122 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:40:59,123 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:40:59,123 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:40:59,123 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:40:59,126 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:40:59,126 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:40:59,127 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:40:59,127 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:40:59,128 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:40:59,128 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:40:59,128 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:40:59,129 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:40:59,131 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_141|], 10=[|v_#valid_148|]} [2021-11-12 22:40:59,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:40:59,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:40:59,142 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:40:59,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:40:59,143 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:40:59,144 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:40:59,144 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:40:59,145 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:40:59,145 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:40:59,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:40:59,147 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:40:59,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:40:59,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:40:59,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:40:59,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:40:59,157 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:40:59,159 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:40:59,159 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:40:59,160 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:40:59,160 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:40:59,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:40:59,162 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:40:59,163 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:40:59,164 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:40:59,164 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:40:59,165 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:40:59,166 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:40:59,167 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:40:59,167 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:40:59,168 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 22:40:59,169 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-11-12 22:40:59,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:40:59,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:40:59,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-12 22:40:59,178 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:40:59,179 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:40:59,179 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:40:59,180 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:40:59,180 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:40:59,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:40:59,183 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:40:59,183 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:40:59,184 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 112 [2021-11-12 22:40:59,185 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:40:59,185 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:116, output treesize:112 [2021-11-12 22:40:59,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:40:59,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:40:59,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:40:59,209 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:40:59,213 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:40:59,214 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:40:59,215 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:40:59,215 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:40:59,216 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:40:59,216 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:40:59,217 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:40:59,217 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-12 22:40:59,219 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 266 [2021-11-12 22:40:59,219 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:40:59,220 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:40:59,222 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 245 [2021-11-12 22:40:59,224 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 303 [2021-11-12 22:40:59,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:40:59,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:40:59,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:40:59,242 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:40:59,242 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:40:59,243 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:40:59,243 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:40:59,243 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:40:59,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:40:59,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:40:59,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:40:59,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2021-11-12 22:40:59,258 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:40:59,259 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:40:59,260 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:40:59,260 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:40:59,260 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:40:59,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:40:59,273 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:40:59,278 INFO L180 QuantifierPusher]: treesize reduction 92, result has 74.9 percent of original size [2021-11-12 22:40:59,280 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:40:59,281 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:40:59,281 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:374, output treesize:274 [2021-11-12 22:40:59,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:40:59,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:40:59,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:40:59,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:40:59,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:40:59,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:40:59,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:40:59,306 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:40:59,307 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:40:59,308 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:40:59,308 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:40:59,309 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:40:59,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:40:59,314 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:40:59,314 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:40:59,315 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:40:59,315 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:40:59,315 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:40:59,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:40:59,316 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:40:59,317 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:40:59,318 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:40:59,318 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:40:59,318 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:40:59,321 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:40:59,323 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:40:59,324 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:40:59,326 INFO L185 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size 71 [2021-11-12 22:40:59,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:40:59,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:40:59,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:40:59,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:40:59,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:40:59,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:40:59,338 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:40:59,340 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-12 22:40:59,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:40:59,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:40:59,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:40:59,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:40:59,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:40:59,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:40:59,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:40:59,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:40:59,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:40:59,358 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:40:59,359 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:40:59,364 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:41:00,369 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:41:00,369 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:41:00,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52, 52] total 77 [2021-11-12 22:41:00,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150440932] [2021-11-12 22:41:00,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:41:00,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2021-11-12 22:41:00,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:41:00,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-11-12 22:41:00,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=6424, Unknown=0, NotChecked=0, Total=6642 [2021-11-12 22:41:00,371 INFO L87 Difference]: Start difference. First operand 100 states and 101 transitions. Second operand has 77 states, 77 states have (on average 2.2467532467532467) internal successors, (173), 77 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:41:03,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:41:03,294 INFO L93 Difference]: Finished difference Result 107 states and 108 transitions. [2021-11-12 22:41:03,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-11-12 22:41:03,294 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.2467532467532467) internal successors, (173), 77 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-12 22:41:03,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:41:03,295 INFO L225 Difference]: With dead ends: 107 [2021-11-12 22:41:03,295 INFO L226 Difference]: Without dead ends: 105 [2021-11-12 22:41:03,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 261 SyntacticMatches, 6 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1509 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=406, Invalid=11366, Unknown=0, NotChecked=0, Total=11772 [2021-11-12 22:41:03,296 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 32 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 4835 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1667.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 4933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.05ms SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 4835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1994.13ms IncrementalHoareTripleChecker+Time [2021-11-12 22:41:03,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 1520 Invalid, 4933 Unknown, 0 Unchecked, 8.05ms Time], IncrementalHoareTripleChecker [98 Valid, 4835 Invalid, 0 Unknown, 0 Unchecked, 1994.13ms Time] [2021-11-12 22:41:03,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-11-12 22:41:03,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2021-11-12 22:41:03,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.0196078431372548) internal successors, (104), 102 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:41:03,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2021-11-12 22:41:03,311 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 99 [2021-11-12 22:41:03,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:41:03,311 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2021-11-12 22:41:03,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 2.2467532467532467) internal successors, (173), 77 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:41:03,312 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2021-11-12 22:41:03,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-12 22:41:03,312 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:41:03,312 INFO L514 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 1, 1, 1, 1, 1] [2021-11-12 22:41:03,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2021-11-12 22:41:03,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1185,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:41:03,513 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:41:03,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:41:03,513 INFO L85 PathProgramCache]: Analyzing trace with hash 429871132, now seen corresponding path program 44 times [2021-11-12 22:41:03,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:41:03,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731649010] [2021-11-12 22:41:03,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:41:03,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:41:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:41:04,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 806 proven. 370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:41:04,409 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:41:04,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731649010] [2021-11-12 22:41:04,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731649010] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:41:04,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25101909] [2021-11-12 22:41:04,410 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 22:41:04,410 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:41:04,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:41:04,410 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:41:04,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-11-12 22:41:14,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 25 check-sat command(s) [2021-11-12 22:41:14,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:41:14,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 52 conjunts are in the unsatisfiable core [2021-11-12 22:41:14,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:41:16,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 876 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:41:16,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:41:16,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 876 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:41:16,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25101909] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:41:16,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1871490383] [2021-11-12 22:41:16,523 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:41:16,523 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:41:16,538 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:41:16,538 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:41:16,538 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:41:16,541 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:16,542 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:16,542 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:16,543 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:41:16,543 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:16,544 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:16,544 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:41:16,545 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:41:16,546 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_143|], 10=[|v_#valid_150|]} [2021-11-12 22:41:16,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:16,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:41:16,552 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:16,552 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:41:16,553 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:16,553 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:41:16,553 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:41:16,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:16,556 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:16,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:16,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:16,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:16,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:16,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:41:16,564 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:16,566 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:41:16,566 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:16,567 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:41:16,567 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:41:16,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:16,568 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:16,569 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:16,570 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:41:16,570 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:41:16,570 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:41:16,573 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:41:16,573 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:16,574 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:16,574 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:41:16,574 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:16,575 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:16,575 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:41:16,576 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:41:16,577 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_144|], 10=[|v_#valid_151|]} [2021-11-12 22:41:16,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:16,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:16,588 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:41:16,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:41:16,589 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:16,590 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:41:16,590 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:16,591 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:41:16,591 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:41:16,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:16,593 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:16,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:16,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:16,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:16,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:41:16,612 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:16,614 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:41:16,614 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:16,615 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:41:16,615 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:41:16,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:16,617 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:16,618 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:16,619 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:41:16,619 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:41:16,619 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:41:16,621 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:16,622 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:16,622 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:16,622 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 22:41:16,624 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-11-12 22:41:16,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:16,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:16,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-12 22:41:16,633 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:16,634 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:41:16,635 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:16,635 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:41:16,635 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:41:16,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:16,638 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:16,639 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:16,640 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 112 [2021-11-12 22:41:16,640 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:41:16,640 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:116, output treesize:112 [2021-11-12 22:41:16,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:16,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:16,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:16,662 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:16,666 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:16,668 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:16,669 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:16,669 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:16,669 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:41:16,670 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:16,670 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:16,671 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-12 22:41:16,673 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 266 [2021-11-12 22:41:16,673 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:16,674 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:16,676 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 245 [2021-11-12 22:41:16,678 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 303 [2021-11-12 22:41:16,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:16,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:16,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:41:16,695 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:16,696 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:41:16,696 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:16,697 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:41:16,697 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:41:16,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:16,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:16,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:16,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2021-11-12 22:41:16,711 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:16,712 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:41:16,713 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:16,713 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:41:16,713 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:41:16,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:16,726 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:16,731 INFO L180 QuantifierPusher]: treesize reduction 92, result has 74.9 percent of original size [2021-11-12 22:41:16,732 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:41:16,733 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:41:16,733 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:374, output treesize:274 [2021-11-12 22:41:16,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:16,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:16,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:16,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:16,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:16,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:16,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:16,760 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:41:16,761 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:16,761 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:16,761 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:41:16,762 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:41:16,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:41:16,767 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:16,767 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:41:16,767 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:16,768 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:41:16,768 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:41:16,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:16,769 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:16,770 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:16,770 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:41:16,771 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:41:16,771 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:41:16,774 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:41:16,775 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:41:16,776 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:16,778 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-12 22:41:16,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:16,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:16,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:16,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:16,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:16,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:16,790 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:41:16,791 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:41:16,796 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:41:17,527 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:41:17,527 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:41:17,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52, 52] total 79 [2021-11-12 22:41:17,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48927204] [2021-11-12 22:41:17,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:41:17,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2021-11-12 22:41:17,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:41:17,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-11-12 22:41:17,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1448, Invalid=5524, Unknown=0, NotChecked=0, Total=6972 [2021-11-12 22:41:17,529 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand has 79 states, 79 states have (on average 2.3037974683544302) internal successors, (182), 79 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:41:18,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:41:18,449 INFO L93 Difference]: Finished difference Result 188 states and 190 transitions. [2021-11-12 22:41:18,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-11-12 22:41:18,450 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.3037974683544302) internal successors, (182), 79 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-11-12 22:41:18,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:41:18,451 INFO L225 Difference]: With dead ends: 188 [2021-11-12 22:41:18,451 INFO L226 Difference]: Without dead ends: 110 [2021-11-12 22:41:18,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3097 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2444, Invalid=9112, Unknown=0, NotChecked=0, Total=11556 [2021-11-12 22:41:18,453 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 324 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 318.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.73ms SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 396.15ms IncrementalHoareTripleChecker+Time [2021-11-12 22:41:18,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 243 Invalid, 706 Unknown, 0 Unchecked, 3.73ms Time], IncrementalHoareTripleChecker [213 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 396.15ms Time] [2021-11-12 22:41:18,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-11-12 22:41:18,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 104. [2021-11-12 22:41:18,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.0194174757281553) internal successors, (105), 103 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:41:18,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2021-11-12 22:41:18,481 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 102 [2021-11-12 22:41:18,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:41:18,482 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2021-11-12 22:41:18,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 2.3037974683544302) internal successors, (182), 79 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:41:18,482 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2021-11-12 22:41:18,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-12 22:41:18,483 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:41:18,483 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 1, 1, 1, 1, 1] [2021-11-12 22:41:18,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2021-11-12 22:41:18,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1218 [2021-11-12 22:41:18,698 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:41:18,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:41:18,698 INFO L85 PathProgramCache]: Analyzing trace with hash 310070274, now seen corresponding path program 45 times [2021-11-12 22:41:18,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:41:18,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986180605] [2021-11-12 22:41:18,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:41:18,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:41:18,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:41:20,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 0 proven. 1201 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:41:20,796 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:41:20,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986180605] [2021-11-12 22:41:20,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986180605] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:41:20,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678993836] [2021-11-12 22:41:20,797 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-12 22:41:20,797 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:41:20,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:41:20,798 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:41:20,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-11-12 22:41:20,977 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-12 22:41:20,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:41:20,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 106 conjunts are in the unsatisfiable core [2021-11-12 22:41:20,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:41:21,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-12 22:41:23,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 26 [2021-11-12 22:41:23,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 0 proven. 1201 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:41:23,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:41:24,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:41:24,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:41:24,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:41:24,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:41:24,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 0 proven. 1201 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:41:24,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678993836] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:41:24,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [309167609] [2021-11-12 22:41:24,699 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:41:24,700 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:41:24,700 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:41:24,700 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:41:24,700 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:41:24,702 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:24,702 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:24,703 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:24,703 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:41:24,703 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:24,704 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:24,704 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:41:24,705 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:41:24,708 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_146|], 10=[|v_#valid_153|]} [2021-11-12 22:41:24,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:24,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:41:24,713 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:24,714 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:41:24,714 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:24,715 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:41:24,715 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:41:24,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:24,716 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:24,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:24,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:24,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:24,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:24,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:41:24,725 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:24,726 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:41:24,727 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:24,727 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:41:24,727 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:41:24,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:24,729 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:24,729 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:24,730 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:41:24,730 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:41:24,731 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:41:24,733 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:41:24,734 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:24,734 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:24,735 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:41:24,735 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:24,735 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:24,736 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:41:24,737 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:41:24,738 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_147|], 10=[|v_#valid_154|]} [2021-11-12 22:41:24,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:24,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:24,749 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:41:24,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:41:24,750 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:24,751 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:41:24,751 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:24,752 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:41:24,752 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:41:24,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:24,754 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:24,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:24,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:24,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:24,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:41:24,764 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:24,778 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:41:24,779 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:24,780 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:41:24,780 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:41:24,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:24,784 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:24,785 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:24,787 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:41:24,787 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:41:24,788 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:41:24,790 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:24,791 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:24,792 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:24,793 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:41:24,795 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-11-12 22:41:24,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:24,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:24,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:41:24,807 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:24,808 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:41:24,809 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:24,809 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:41:24,810 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:41:24,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:24,814 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:24,815 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:24,817 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-11-12 22:41:24,818 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:41:24,818 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:132, output treesize:128 [2021-11-12 22:41:24,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:24,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:24,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:24,856 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:24,862 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:24,865 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:24,866 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:24,866 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:24,867 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-12 22:41:24,868 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:24,868 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:24,869 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:41:24,872 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:41:24,872 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:24,875 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:24,877 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 253 [2021-11-12 22:41:24,881 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 314 [2021-11-12 22:41:24,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:24,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:24,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:41:24,903 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:24,904 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:41:24,904 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:24,905 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:41:24,905 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:41:24,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:24,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:24,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:24,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 56 [2021-11-12 22:41:24,924 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:24,926 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-12 22:41:24,927 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:24,927 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-12 22:41:24,927 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:41:24,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:24,946 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:24,955 INFO L180 QuantifierPusher]: treesize reduction 99, result has 73.9 percent of original size [2021-11-12 22:41:24,958 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 281 [2021-11-12 22:41:24,959 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:41:24,960 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:388, output treesize:281 [2021-11-12 22:41:24,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:24,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:24,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:24,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:24,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:24,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:24,992 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:41:24,993 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:24,994 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:24,994 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:41:24,996 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:41:25,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:41:25,002 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:25,002 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:41:25,003 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:25,003 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:41:25,004 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:41:25,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:25,006 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:25,007 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:25,007 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:41:25,008 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:41:25,008 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:41:25,013 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:41:25,014 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:41:25,017 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:25,019 INFO L185 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size 71 [2021-11-12 22:41:25,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:25,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:25,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:25,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:25,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:25,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:25,036 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:25,039 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-12 22:41:25,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:25,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:25,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:25,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:25,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:25,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:25,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:25,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:25,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:25,066 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:41:25,068 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:41:25,075 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:41:26,181 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:41:26,181 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:41:26,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 80 [2021-11-12 22:41:26,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765744787] [2021-11-12 22:41:26,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:41:26,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2021-11-12 22:41:26,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:41:26,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-11-12 22:41:26,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=6914, Unknown=0, NotChecked=0, Total=7140 [2021-11-12 22:41:26,183 INFO L87 Difference]: Start difference. First operand 104 states and 105 transitions. Second operand has 80 states, 80 states have (on average 2.25) internal successors, (180), 80 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:41:29,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:41:29,722 INFO L93 Difference]: Finished difference Result 111 states and 112 transitions. [2021-11-12 22:41:29,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-11-12 22:41:29,723 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 2.25) internal successors, (180), 80 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-12 22:41:29,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:41:29,726 INFO L225 Difference]: With dead ends: 111 [2021-11-12 22:41:29,726 INFO L226 Difference]: Without dead ends: 109 [2021-11-12 22:41:29,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 272 SyntacticMatches, 6 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1621 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=421, Invalid=12235, Unknown=0, NotChecked=0, Total=12656 [2021-11-12 22:41:29,727 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 34 mSDsluCounter, 1631 mSDsCounter, 0 mSdLazyCounter, 5156 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1987.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 5259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.03ms SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 5156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2378.06ms IncrementalHoareTripleChecker+Time [2021-11-12 22:41:29,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 1631 Invalid, 5259 Unknown, 0 Unchecked, 10.03ms Time], IncrementalHoareTripleChecker [103 Valid, 5156 Invalid, 0 Unknown, 0 Unchecked, 2378.06ms Time] [2021-11-12 22:41:29,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-12 22:41:29,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 107. [2021-11-12 22:41:29,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.0188679245283019) internal successors, (108), 106 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:41:29,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2021-11-12 22:41:29,757 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 103 [2021-11-12 22:41:29,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:41:29,758 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2021-11-12 22:41:29,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 2.25) internal successors, (180), 80 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:41:29,758 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2021-11-12 22:41:29,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-12 22:41:29,759 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:41:29,759 INFO L514 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 1, 1, 1, 1, 1] [2021-11-12 22:41:29,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2021-11-12 22:41:29,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1242 [2021-11-12 22:41:29,986 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:41:29,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:41:29,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1166327493, now seen corresponding path program 46 times [2021-11-12 22:41:29,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:41:29,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061152108] [2021-11-12 22:41:29,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:41:29,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:41:30,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:41:31,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 877 proven. 398 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:41:31,253 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:41:31,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061152108] [2021-11-12 22:41:31,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061152108] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:41:31,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928939045] [2021-11-12 22:41:31,253 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-12 22:41:31,254 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:41:31,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:41:31,260 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:41:31,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-11-12 22:41:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:41:31,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-12 22:41:31,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:41:33,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 950 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:41:33,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:41:33,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 950 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:41:33,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928939045] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:41:33,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1034808615] [2021-11-12 22:41:33,349 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:41:33,349 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:41:33,349 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:41:33,349 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:41:33,350 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:41:33,352 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:33,353 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:33,354 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:33,355 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:41:33,355 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:33,355 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:33,356 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:41:33,356 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:41:33,358 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_149|], 10=[|v_#valid_156|]} [2021-11-12 22:41:33,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:33,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:41:33,363 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:33,364 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:41:33,364 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:33,364 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:41:33,365 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:41:33,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:33,366 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:33,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:33,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:33,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:33,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:33,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:41:33,375 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:33,376 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:41:33,377 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:33,377 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:41:33,378 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:41:33,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:33,384 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:33,385 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:33,385 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:41:33,386 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:41:33,386 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:41:33,388 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:41:33,389 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:33,389 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:33,389 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:41:33,390 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:33,390 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:33,390 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:41:33,391 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:41:33,393 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_150|], 10=[|v_#valid_157|]} [2021-11-12 22:41:33,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:33,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:33,405 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:41:33,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:41:33,405 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:33,406 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:41:33,407 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:33,407 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:41:33,407 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:41:33,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:33,410 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:33,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:33,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:33,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:33,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:41:33,421 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:33,429 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:41:33,442 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:33,443 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:41:33,443 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:41:33,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:33,447 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:33,448 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:33,450 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:41:33,450 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:41:33,451 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:41:33,453 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:33,455 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:33,456 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:33,456 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 22:41:33,458 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-12 22:41:33,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:33,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:33,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-12 22:41:33,470 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:33,471 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:41:33,472 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:33,472 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:41:33,472 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:41:33,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:33,476 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:33,478 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:33,479 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-12 22:41:33,480 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:41:33,480 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:123, output treesize:119 [2021-11-12 22:41:33,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:33,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:33,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:33,514 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:33,519 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:33,521 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:33,522 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:33,522 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:33,522 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-12 22:41:33,523 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:33,523 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:33,524 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:41:33,525 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 271 [2021-11-12 22:41:33,526 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:33,527 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:33,529 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 250 [2021-11-12 22:41:33,531 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 308 [2021-11-12 22:41:33,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:33,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:33,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:33,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2021-11-12 22:41:33,552 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:33,553 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:41:33,554 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:33,554 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:41:33,554 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:41:33,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:33,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:33,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:41:33,574 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:33,575 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:41:33,575 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:33,575 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:41:33,576 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:41:33,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:33,589 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:33,596 INFO L180 QuantifierPusher]: treesize reduction 97, result has 73.9 percent of original size [2021-11-12 22:41:33,598 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:41:33,599 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:41:33,599 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:379, output treesize:274 [2021-11-12 22:41:33,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:33,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:33,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:33,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:33,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:33,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:33,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:33,624 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:41:33,625 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:33,625 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:33,626 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:41:33,627 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:41:33,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:41:33,631 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:33,632 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:41:33,632 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:33,632 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:41:33,633 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:41:33,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:33,634 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:33,634 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:33,635 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:41:33,635 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:41:33,635 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:41:33,638 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:41:33,640 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:41:33,641 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:33,642 INFO L185 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size 71 [2021-11-12 22:41:33,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:33,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:33,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:33,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:33,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:33,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:33,660 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:33,662 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-12 22:41:33,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:33,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:33,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:33,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:33,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:33,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:33,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:33,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:33,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:33,694 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:41:33,696 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:41:33,703 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:41:34,461 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:41:34,462 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:41:34,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 82 [2021-11-12 22:41:34,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138353233] [2021-11-12 22:41:34,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:41:34,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2021-11-12 22:41:34,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:41:34,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-11-12 22:41:34,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1557, Invalid=5925, Unknown=0, NotChecked=0, Total=7482 [2021-11-12 22:41:34,464 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand has 82 states, 82 states have (on average 2.3048780487804876) internal successors, (189), 82 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:41:35,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:41:35,217 INFO L93 Difference]: Finished difference Result 195 states and 197 transitions. [2021-11-12 22:41:35,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-11-12 22:41:35,218 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 2.3048780487804876) internal successors, (189), 82 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-12 22:41:35,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:41:35,219 INFO L225 Difference]: With dead ends: 195 [2021-11-12 22:41:35,219 INFO L226 Difference]: Without dead ends: 114 [2021-11-12 22:41:35,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3325 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2632, Invalid=9800, Unknown=0, NotChecked=0, Total=12432 [2021-11-12 22:41:35,221 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 368 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 266.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.81ms SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 320.55ms IncrementalHoareTripleChecker+Time [2021-11-12 22:41:35,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 238 Invalid, 708 Unknown, 0 Unchecked, 2.81ms Time], IncrementalHoareTripleChecker [216 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 320.55ms Time] [2021-11-12 22:41:35,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-11-12 22:41:35,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 108. [2021-11-12 22:41:35,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.0186915887850467) internal successors, (109), 107 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:41:35,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 109 transitions. [2021-11-12 22:41:35,245 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 109 transitions. Word has length 106 [2021-11-12 22:41:35,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:41:35,245 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 109 transitions. [2021-11-12 22:41:35,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 2.3048780487804876) internal successors, (189), 82 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:41:35,245 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 109 transitions. [2021-11-12 22:41:35,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-12 22:41:35,246 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:41:35,246 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 1, 1, 1, 1, 1] [2021-11-12 22:41:35,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2021-11-12 22:41:35,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1274,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:41:35,447 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:41:35,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:41:35,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1416963551, now seen corresponding path program 47 times [2021-11-12 22:41:35,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:41:35,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104438111] [2021-11-12 22:41:35,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:41:35,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:41:35,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:41:37,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1301 backedges. 0 proven. 1301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:41:37,907 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:41:37,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104438111] [2021-11-12 22:41:37,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104438111] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:41:37,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264442007] [2021-11-12 22:41:37,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 22:41:37,908 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:41:37,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:41:37,909 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:41:37,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-11-12 22:41:47,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 26 check-sat command(s) [2021-11-12 22:41:47,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:41:47,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 110 conjunts are in the unsatisfiable core [2021-11-12 22:41:47,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:41:47,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-12 22:41:49,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 26 [2021-11-12 22:41:49,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1301 backedges. 0 proven. 1301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:41:49,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:41:50,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:41:50,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:41:50,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:41:50,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:41:50,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1301 backedges. 0 proven. 1301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:41:50,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264442007] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:41:50,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1050670089] [2021-11-12 22:41:50,840 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:41:50,840 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:41:50,840 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:41:50,840 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:41:50,840 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:41:50,856 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:50,856 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:50,857 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:50,857 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:41:50,857 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:50,858 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:50,858 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:41:50,859 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:41:50,860 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_152|], 10=[|v_#valid_159|]} [2021-11-12 22:41:50,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:50,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:41:50,866 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:50,866 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:41:50,866 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:50,867 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:41:50,867 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:41:50,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:50,869 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:50,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:50,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:50,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:50,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:50,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:41:50,877 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:50,878 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:41:50,879 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:50,879 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:41:50,879 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:41:50,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:50,881 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:50,881 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:50,882 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:41:50,882 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:41:50,882 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:41:50,885 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:41:50,885 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:50,886 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:50,886 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:41:50,886 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:50,887 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:50,887 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:41:50,888 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:41:50,889 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_153|], 10=[|v_#valid_160|]} [2021-11-12 22:41:50,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:50,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:50,900 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:41:50,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:41:50,901 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:50,902 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:41:50,902 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:50,902 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:41:50,902 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:41:50,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:50,905 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:50,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:50,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:50,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:50,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:41:50,914 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:50,916 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:41:50,916 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:50,916 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:41:50,917 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:41:50,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:50,919 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:50,920 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:50,921 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:41:50,921 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:41:50,921 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:41:50,923 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:50,924 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:50,925 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:50,925 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 22:41:50,926 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-11-12 22:41:50,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:50,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:50,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-12 22:41:50,935 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:50,936 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:41:50,937 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:50,937 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:41:50,937 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:41:50,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:50,940 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:50,940 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:50,941 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 112 [2021-11-12 22:41:50,942 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:41:50,942 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:116, output treesize:112 [2021-11-12 22:41:50,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:50,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:50,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:50,981 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:50,985 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:50,987 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:50,987 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:50,988 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:50,988 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:41:50,989 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:50,989 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:50,989 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-12 22:41:50,991 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 266 [2021-11-12 22:41:50,991 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:50,993 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:50,994 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 245 [2021-11-12 22:41:50,996 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 303 [2021-11-12 22:41:51,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:51,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:51,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:51,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2021-11-12 22:41:51,017 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:51,018 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:41:51,019 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:51,019 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:41:51,019 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:41:51,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:51,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:51,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:41:51,032 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:51,033 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:41:51,034 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:51,034 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:41:51,034 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:41:51,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:51,046 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:51,051 INFO L180 QuantifierPusher]: treesize reduction 92, result has 74.9 percent of original size [2021-11-12 22:41:51,053 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:41:51,054 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:41:51,054 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:374, output treesize:274 [2021-11-12 22:41:51,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:51,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:51,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:51,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:51,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:51,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:51,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:51,079 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:41:51,080 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:51,080 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:51,081 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:41:51,081 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:41:51,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:41:51,086 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:51,087 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:41:51,087 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:51,087 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:41:51,087 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:41:51,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:51,089 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:51,089 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:51,090 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:41:51,090 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:41:51,090 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:41:51,093 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:41:51,095 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:41:51,096 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:51,098 INFO L185 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size 71 [2021-11-12 22:41:51,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:51,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:51,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:51,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:51,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:51,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:51,110 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:51,112 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-12 22:41:51,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:51,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:51,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:51,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:51,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:51,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:51,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:51,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:51,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:51,131 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:41:51,132 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:41:51,137 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:41:52,141 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:41:52,141 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:41:52,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56, 56] total 83 [2021-11-12 22:41:52,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309025060] [2021-11-12 22:41:52,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:41:52,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2021-11-12 22:41:52,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:41:52,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-11-12 22:41:52,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=7422, Unknown=0, NotChecked=0, Total=7656 [2021-11-12 22:41:52,143 INFO L87 Difference]: Start difference. First operand 108 states and 109 transitions. Second operand has 83 states, 83 states have (on average 2.253012048192771) internal successors, (187), 83 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:41:56,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:41:56,212 INFO L93 Difference]: Finished difference Result 115 states and 116 transitions. [2021-11-12 22:41:56,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-11-12 22:41:56,212 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.253012048192771) internal successors, (187), 83 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-11-12 22:41:56,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:41:56,214 INFO L225 Difference]: With dead ends: 115 [2021-11-12 22:41:56,214 INFO L226 Difference]: Without dead ends: 113 [2021-11-12 22:41:56,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 283 SyntacticMatches, 6 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1737 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=436, Invalid=13136, Unknown=0, NotChecked=0, Total=13572 [2021-11-12 22:41:56,216 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 35 mSDsluCounter, 1852 mSDsCounter, 0 mSdLazyCounter, 5898 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2336.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1852 SdHoareTripleChecker+Invalid, 6005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.31ms SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 5898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2797.62ms IncrementalHoareTripleChecker+Time [2021-11-12 22:41:56,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 1852 Invalid, 6005 Unknown, 0 Unchecked, 11.31ms Time], IncrementalHoareTripleChecker [107 Valid, 5898 Invalid, 0 Unknown, 0 Unchecked, 2797.62ms Time] [2021-11-12 22:41:56,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-11-12 22:41:56,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2021-11-12 22:41:56,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.018181818181818) internal successors, (112), 110 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:41:56,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2021-11-12 22:41:56,259 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 107 [2021-11-12 22:41:56,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:41:56,259 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2021-11-12 22:41:56,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 2.253012048192771) internal successors, (187), 83 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:41:56,260 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2021-11-12 22:41:56,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-12 22:41:56,261 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:41:56,261 INFO L514 BasicCegarLoop]: trace histogram [27, 26, 26, 26, 1, 1, 1, 1, 1] [2021-11-12 22:41:56,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2021-11-12 22:41:56,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1307,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:41:56,478 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:41:56,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:41:56,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1817769284, now seen corresponding path program 48 times [2021-11-12 22:41:56,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:41:56,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118009088] [2021-11-12 22:41:56,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:41:56,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:41:56,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:41:57,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 951 proven. 427 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:41:57,613 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:41:57,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118009088] [2021-11-12 22:41:57,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118009088] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:41:57,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533846396] [2021-11-12 22:41:57,614 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-12 22:41:57,614 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:41:57,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:41:57,622 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:41:57,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-11-12 22:41:57,744 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-12 22:41:57,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:41:57,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 56 conjunts are in the unsatisfiable core [2021-11-12 22:41:57,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:41:59,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 1027 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:41:59,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:41:59,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 1027 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:41:59,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533846396] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:41:59,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [734904794] [2021-11-12 22:41:59,378 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:41:59,378 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:41:59,378 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:41:59,379 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:41:59,379 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:41:59,382 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:59,382 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:59,383 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:59,383 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:41:59,383 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:59,384 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:59,384 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:41:59,385 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:41:59,386 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_155|], 10=[|v_#valid_162|]} [2021-11-12 22:41:59,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:59,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:41:59,391 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:59,391 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:41:59,391 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:59,392 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:41:59,392 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:41:59,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:59,393 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:59,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:59,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:59,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:59,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:59,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:41:59,401 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:59,402 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:41:59,402 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:59,403 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:41:59,403 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:41:59,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:59,404 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:59,405 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:59,405 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:41:59,405 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:41:59,406 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:41:59,408 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:41:59,408 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:59,408 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:59,409 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:41:59,409 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:59,409 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:59,410 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:41:59,410 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:41:59,412 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_156|], 10=[|v_#valid_163|]} [2021-11-12 22:41:59,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:59,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:59,421 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:41:59,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:41:59,422 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:59,423 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:41:59,423 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:59,423 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:41:59,423 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:41:59,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:59,426 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:59,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:59,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:59,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:59,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:41:59,434 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:59,436 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:41:59,436 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:59,436 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:41:59,436 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:41:59,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:59,438 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:59,439 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:59,440 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:41:59,440 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:41:59,440 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:41:59,441 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:59,442 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:59,443 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:59,443 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:41:59,444 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-11-12 22:41:59,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:59,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:59,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:41:59,455 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:59,456 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:41:59,456 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:59,456 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:41:59,457 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:41:59,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:59,459 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:59,459 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:59,460 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-11-12 22:41:59,460 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:41:59,461 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:132, output treesize:128 [2021-11-12 22:41:59,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:59,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:59,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:59,482 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:59,485 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:59,486 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:59,487 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:59,487 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:59,488 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-12 22:41:59,488 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:59,488 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:59,489 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:41:59,490 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:41:59,490 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:59,491 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:59,492 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 253 [2021-11-12 22:41:59,494 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 314 [2021-11-12 22:41:59,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:59,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:59,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:59,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 56 [2021-11-12 22:41:59,513 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:59,514 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-12 22:41:59,514 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:59,514 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-12 22:41:59,514 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:41:59,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:59,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:41:59,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:41:59,525 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:59,526 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:41:59,526 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:59,527 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:41:59,527 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:41:59,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:59,537 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:59,541 INFO L180 QuantifierPusher]: treesize reduction 97, result has 74.3 percent of original size [2021-11-12 22:41:59,543 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 281 [2021-11-12 22:41:59,543 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:41:59,544 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:388, output treesize:281 [2021-11-12 22:41:59,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:59,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:59,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:59,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:59,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:59,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:59,561 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:41:59,562 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:41:59,562 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:59,562 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:41:59,563 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:41:59,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:41:59,568 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:59,568 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:41:59,568 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:59,572 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:41:59,572 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:41:59,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:59,573 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:59,574 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:59,574 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:41:59,574 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:41:59,575 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:41:59,577 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:41:59,578 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:41:59,579 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:59,580 INFO L185 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size 71 [2021-11-12 22:41:59,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:59,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:59,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:59,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:59,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:59,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:59,591 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:41:59,592 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-12 22:41:59,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:59,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:59,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:59,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:59,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:59,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:59,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:59,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:59,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:41:59,609 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:41:59,610 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:41:59,613 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:42:00,220 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:42:00,220 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:42:00,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56, 56] total 85 [2021-11-12 22:42:00,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954779863] [2021-11-12 22:42:00,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:42:00,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2021-11-12 22:42:00,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:42:00,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-11-12 22:42:00,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1670, Invalid=6340, Unknown=0, NotChecked=0, Total=8010 [2021-11-12 22:42:00,222 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand has 85 states, 85 states have (on average 2.3058823529411763) internal successors, (196), 85 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:00,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:00,839 INFO L93 Difference]: Finished difference Result 202 states and 204 transitions. [2021-11-12 22:42:00,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-11-12 22:42:00,839 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.3058823529411763) internal successors, (196), 85 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-12 22:42:00,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:00,840 INFO L225 Difference]: With dead ends: 202 [2021-11-12 22:42:00,840 INFO L226 Difference]: Without dead ends: 118 [2021-11-12 22:42:00,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3561 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2827, Invalid=10513, Unknown=0, NotChecked=0, Total=13340 [2021-11-12 22:42:00,842 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 280 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 192.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.16ms SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 243.21ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:00,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 213 Invalid, 632 Unknown, 0 Unchecked, 2.16ms Time], IncrementalHoareTripleChecker [195 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 243.21ms Time] [2021-11-12 22:42:00,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-11-12 22:42:00,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 112. [2021-11-12 22:42:00,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.018018018018018) internal successors, (113), 111 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:00,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2021-11-12 22:42:00,862 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 110 [2021-11-12 22:42:00,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:00,863 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2021-11-12 22:42:00,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 2.3058823529411763) internal successors, (196), 85 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:00,863 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2021-11-12 22:42:00,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-12 22:42:00,864 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:00,864 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 1, 1, 1, 1, 1] [2021-11-12 22:42:00,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2021-11-12 22:42:01,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1340,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:42:01,078 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:42:01,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:01,078 INFO L85 PathProgramCache]: Analyzing trace with hash -808206174, now seen corresponding path program 49 times [2021-11-12 22:42:01,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:42:01,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895612769] [2021-11-12 22:42:01,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:01,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:42:01,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:03,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 0 proven. 1405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:42:03,100 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:42:03,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895612769] [2021-11-12 22:42:03,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895612769] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:42:03,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55124452] [2021-11-12 22:42:03,101 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-12 22:42:03,101 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:42:03,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:42:03,104 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:42:03,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-11-12 22:42:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:03,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 114 conjunts are in the unsatisfiable core [2021-11-12 22:42:03,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:42:03,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-12 22:42:05,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 26 [2021-11-12 22:42:05,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 0 proven. 1405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:42:05,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:42:06,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:42:06,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:42:06,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:42:06,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:42:06,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 0 proven. 1405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:42:06,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55124452] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:42:06,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1351876472] [2021-11-12 22:42:06,609 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:42:06,609 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:42:06,610 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:42:06,610 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:42:06,610 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:42:06,623 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:06,624 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:42:06,624 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:06,625 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:42:06,625 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:42:06,626 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:06,626 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:42:06,627 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:42:06,630 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_158|], 10=[|v_#valid_165|]} [2021-11-12 22:42:06,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:06,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:42:06,637 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:06,638 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:42:06,638 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:06,639 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:42:06,639 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:42:06,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:06,642 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:06,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:06,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:06,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:06,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:06,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:42:06,652 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:06,653 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:42:06,654 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:06,654 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:42:06,654 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:42:06,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:06,656 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:06,657 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:06,658 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:42:06,658 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:42:06,658 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:42:06,661 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:42:06,661 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:42:06,662 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:06,662 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:42:06,662 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:42:06,663 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:06,663 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:42:06,664 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:42:06,665 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_159|], 10=[|v_#valid_166|]} [2021-11-12 22:42:06,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:06,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:06,676 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:42:06,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:42:06,677 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:06,678 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:42:06,678 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:06,679 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:42:06,679 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:42:06,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:06,681 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:06,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:06,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:06,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:06,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:42:06,691 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:06,693 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:42:06,693 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:06,693 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:42:06,694 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:42:06,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:06,696 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:06,697 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:06,698 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:42:06,698 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:42:06,698 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:42:06,700 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:06,701 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:42:06,701 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:06,702 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:42:06,703 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-11-12 22:42:06,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:06,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:06,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:42:06,712 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:06,713 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:42:06,713 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:06,714 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:42:06,714 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:42:06,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:06,717 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:06,718 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:06,719 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-11-12 22:42:06,719 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:42:06,719 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:132, output treesize:128 [2021-11-12 22:42:06,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:06,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:06,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:06,747 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:06,751 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:42:06,752 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:06,753 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:42:06,753 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:06,754 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-12 22:42:06,754 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:42:06,755 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:06,755 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:42:06,757 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:42:06,757 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:42:06,758 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:06,760 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 253 [2021-11-12 22:42:06,762 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 314 [2021-11-12 22:42:06,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:06,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:06,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:06,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 56 [2021-11-12 22:42:06,784 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:06,785 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-12 22:42:06,785 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:06,786 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-12 22:42:06,786 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:42:06,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:06,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:06,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:42:06,799 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:06,799 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:42:06,800 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:06,800 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:42:06,801 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:42:06,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:06,814 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:06,822 INFO L180 QuantifierPusher]: treesize reduction 97, result has 74.3 percent of original size [2021-11-12 22:42:06,836 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 281 [2021-11-12 22:42:06,837 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:42:06,838 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:388, output treesize:281 [2021-11-12 22:42:06,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:06,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:06,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:06,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:06,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:06,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:06,871 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:42:06,872 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:42:06,873 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:06,873 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:42:06,874 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:42:06,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:42:06,880 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:06,880 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:42:06,880 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:06,881 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:42:06,881 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:42:06,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:06,882 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:06,883 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:06,883 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:42:06,883 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:42:06,884 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:42:06,887 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:42:06,888 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:42:06,889 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:06,891 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-12 22:42:06,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:06,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:06,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:06,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:06,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:06,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:06,903 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:42:06,904 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:42:06,909 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:42:08,011 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:42:08,011 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:42:08,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58, 58] total 86 [2021-11-12 22:42:08,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166163007] [2021-11-12 22:42:08,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:42:08,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2021-11-12 22:42:08,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:42:08,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2021-11-12 22:42:08,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=7948, Unknown=0, NotChecked=0, Total=8190 [2021-11-12 22:42:08,013 INFO L87 Difference]: Start difference. First operand 112 states and 113 transitions. Second operand has 86 states, 86 states have (on average 2.255813953488372) internal successors, (194), 86 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:12,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:12,248 INFO L93 Difference]: Finished difference Result 119 states and 120 transitions. [2021-11-12 22:42:12,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-11-12 22:42:12,249 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 2.255813953488372) internal successors, (194), 86 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-11-12 22:42:12,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:12,250 INFO L225 Difference]: With dead ends: 119 [2021-11-12 22:42:12,250 INFO L226 Difference]: Without dead ends: 117 [2021-11-12 22:42:12,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 294 SyntacticMatches, 6 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1857 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=451, Invalid=14069, Unknown=0, NotChecked=0, Total=14520 [2021-11-12 22:42:12,251 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 36 mSDsluCounter, 1950 mSDsCounter, 0 mSdLazyCounter, 6087 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2400.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1950 SdHoareTripleChecker+Invalid, 6198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.00ms SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 6087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2872.18ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:12,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 1950 Invalid, 6198 Unknown, 0 Unchecked, 12.00ms Time], IncrementalHoareTripleChecker [111 Valid, 6087 Invalid, 0 Unknown, 0 Unchecked, 2872.18ms Time] [2021-11-12 22:42:12,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-11-12 22:42:12,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 115. [2021-11-12 22:42:12,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.0175438596491229) internal successors, (116), 114 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:12,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2021-11-12 22:42:12,286 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 111 [2021-11-12 22:42:12,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:12,286 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2021-11-12 22:42:12,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 2.255813953488372) internal successors, (194), 86 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:12,287 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2021-11-12 22:42:12,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-12 22:42:12,288 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:12,288 INFO L514 BasicCegarLoop]: trace histogram [28, 27, 27, 27, 1, 1, 1, 1, 1] [2021-11-12 22:42:12,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2021-11-12 22:42:12,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1372,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:42:12,514 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:42:12,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:12,514 INFO L85 PathProgramCache]: Analyzing trace with hash 321325211, now seen corresponding path program 50 times [2021-11-12 22:42:12,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:42:12,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674863022] [2021-11-12 22:42:12,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:12,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:42:12,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:13,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 1028 proven. 457 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:42:13,764 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:42:13,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674863022] [2021-11-12 22:42:13,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674863022] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:42:13,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051617281] [2021-11-12 22:42:13,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 22:42:13,765 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:42:13,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:42:13,765 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:42:13,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-11-12 22:42:24,448 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2021-11-12 22:42:24,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:42:24,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 58 conjunts are in the unsatisfiable core [2021-11-12 22:42:24,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:42:25,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 1107 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:42:25,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:42:26,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 1107 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:42:26,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051617281] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:42:26,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1956015130] [2021-11-12 22:42:26,186 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:42:26,186 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:42:26,186 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:42:26,186 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:42:26,187 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:42:26,189 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:26,189 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:42:26,190 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:26,190 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:42:26,190 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:42:26,191 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:26,191 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:42:26,192 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:42:26,194 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_161|], 10=[|v_#valid_168|]} [2021-11-12 22:42:26,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:26,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:42:26,199 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:26,200 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:42:26,200 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:26,200 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:42:26,201 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:42:26,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:26,203 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:26,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:26,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:26,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:26,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:26,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:42:26,210 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:26,211 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:42:26,211 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:26,211 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:42:26,212 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:42:26,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:26,213 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:26,213 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:26,214 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:42:26,214 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:42:26,214 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:42:26,216 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:42:26,217 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:42:26,217 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:26,217 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:42:26,218 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:42:26,218 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:26,218 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:42:26,219 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:42:26,220 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_162|], 10=[|v_#valid_169|]} [2021-11-12 22:42:26,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:26,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:26,229 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:42:26,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:42:26,229 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:26,230 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:42:26,230 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:26,231 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:42:26,231 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:42:26,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:26,233 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:26,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:26,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:26,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:26,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:42:26,240 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:26,246 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:42:26,247 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:26,247 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:42:26,248 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:42:26,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:26,251 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:26,252 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:26,253 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:42:26,253 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:42:26,254 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:42:26,256 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:26,257 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:42:26,257 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:26,258 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 22:42:26,259 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-11-12 22:42:26,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:26,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:26,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-12 22:42:26,269 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:26,269 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:42:26,270 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:26,270 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:42:26,270 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:42:26,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:26,273 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:26,275 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:26,276 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 112 [2021-11-12 22:42:26,277 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:42:26,277 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:116, output treesize:112 [2021-11-12 22:42:26,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:26,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:26,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:26,304 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:26,309 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:42:26,311 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:26,312 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:42:26,313 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:26,313 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:42:26,314 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:42:26,314 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:26,315 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-12 22:42:26,317 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 266 [2021-11-12 22:42:26,317 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:42:26,319 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:26,320 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 245 [2021-11-12 22:42:26,322 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 303 [2021-11-12 22:42:26,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:26,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:26,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:26,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2021-11-12 22:42:26,339 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:26,340 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:42:26,340 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:26,340 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:42:26,340 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:42:26,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:26,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:26,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:42:26,351 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:26,352 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:42:26,352 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:26,352 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:42:26,353 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:42:26,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:26,363 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:26,366 INFO L180 QuantifierPusher]: treesize reduction 92, result has 74.9 percent of original size [2021-11-12 22:42:26,368 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:42:26,369 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:42:26,369 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:374, output treesize:274 [2021-11-12 22:42:26,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:26,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:26,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:26,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:26,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:26,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:26,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:26,398 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:42:26,399 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:42:26,399 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:26,399 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:42:26,400 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:42:26,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:42:26,405 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:26,405 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:42:26,405 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:26,405 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:42:26,406 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:42:26,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:26,407 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:26,407 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:26,408 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:42:26,408 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:42:26,408 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:42:26,410 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:42:26,411 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:42:26,412 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:26,414 INFO L185 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size 71 [2021-11-12 22:42:26,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:26,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:26,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:26,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:26,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:26,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:26,424 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:26,426 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-12 22:42:26,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:26,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:26,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:26,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:26,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:26,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:26,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:26,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:26,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:26,440 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:42:26,450 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:42:26,455 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:42:27,085 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:42:27,085 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:42:27,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58, 58] total 88 [2021-11-12 22:42:27,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405515658] [2021-11-12 22:42:27,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:42:27,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2021-11-12 22:42:27,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:42:27,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-11-12 22:42:27,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1787, Invalid=6769, Unknown=0, NotChecked=0, Total=8556 [2021-11-12 22:42:27,088 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand has 88 states, 88 states have (on average 2.3068181818181817) internal successors, (203), 88 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:27,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:27,716 INFO L93 Difference]: Finished difference Result 209 states and 211 transitions. [2021-11-12 22:42:27,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-11-12 22:42:27,717 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 2.3068181818181817) internal successors, (203), 88 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-12 22:42:27,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:27,718 INFO L225 Difference]: With dead ends: 209 [2021-11-12 22:42:27,718 INFO L226 Difference]: Without dead ends: 122 [2021-11-12 22:42:27,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3805 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=3029, Invalid=11251, Unknown=0, NotChecked=0, Total=14280 [2021-11-12 22:42:27,719 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 296 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 204.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.07ms SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 246.97ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:27,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 245 Invalid, 707 Unknown, 0 Unchecked, 2.07ms Time], IncrementalHoareTripleChecker [206 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 246.97ms Time] [2021-11-12 22:42:27,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-11-12 22:42:27,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 116. [2021-11-12 22:42:27,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.017391304347826) internal successors, (117), 115 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:27,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 117 transitions. [2021-11-12 22:42:27,745 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 117 transitions. Word has length 114 [2021-11-12 22:42:27,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:27,745 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 117 transitions. [2021-11-12 22:42:27,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 2.3068181818181817) internal successors, (203), 88 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:27,746 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 117 transitions. [2021-11-12 22:42:27,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-12 22:42:27,747 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:27,747 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 1, 1, 1, 1, 1] [2021-11-12 22:42:27,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2021-11-12 22:42:27,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1395,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:42:27,951 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:42:27,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:27,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1553619841, now seen corresponding path program 51 times [2021-11-12 22:42:27,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:42:27,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632694133] [2021-11-12 22:42:27,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:27,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:42:28,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:30,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1513 backedges. 0 proven. 1513 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:42:30,086 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:42:30,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632694133] [2021-11-12 22:42:30,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632694133] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:42:30,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234066913] [2021-11-12 22:42:30,086 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-12 22:42:30,087 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:42:30,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:42:30,087 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:42:30,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-11-12 22:42:30,171 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-12 22:42:30,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:42:30,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 118 conjunts are in the unsatisfiable core [2021-11-12 22:42:30,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:42:30,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-12 22:42:32,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 26 [2021-11-12 22:42:32,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1513 backedges. 0 proven. 1513 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:42:32,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:42:33,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:42:33,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:42:33,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:42:33,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:42:33,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1513 backedges. 0 proven. 1513 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:42:33,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234066913] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:42:33,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1880774414] [2021-11-12 22:42:33,678 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:42:33,678 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:42:33,678 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:42:33,678 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:42:33,678 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:42:33,680 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:33,680 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:42:33,681 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:33,681 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:42:33,681 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:42:33,681 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:33,682 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:42:33,682 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:42:33,684 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_164|], 10=[|v_#valid_171|]} [2021-11-12 22:42:33,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:33,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:42:33,690 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:33,691 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:42:33,691 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:33,691 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:42:33,692 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:42:33,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:33,693 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:33,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:33,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:33,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:33,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:33,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:42:33,701 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:33,702 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:42:33,703 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:33,703 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:42:33,703 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:42:33,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:33,705 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:33,705 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:33,706 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:42:33,706 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:42:33,706 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:42:33,708 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:42:33,709 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:42:33,709 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:33,710 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:42:33,710 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:42:33,710 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:33,710 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:42:33,711 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:42:33,713 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_165|], 10=[|v_#valid_172|]} [2021-11-12 22:42:33,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:33,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:33,723 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:42:33,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:42:33,723 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:33,724 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:42:33,724 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:33,725 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:42:33,725 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:42:33,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:33,727 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:33,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:33,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:33,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:33,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:42:33,736 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:33,737 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:42:33,738 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:33,738 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:42:33,738 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:42:33,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:33,740 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:33,741 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:33,742 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:42:33,742 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:42:33,742 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:42:33,744 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:33,744 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:42:33,745 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:33,745 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 22:42:33,746 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-12 22:42:33,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:33,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:33,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-12 22:42:33,755 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:33,756 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:42:33,756 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:33,756 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:42:33,756 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:42:33,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:33,759 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:33,760 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:33,760 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-12 22:42:33,761 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:42:33,761 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:123, output treesize:119 [2021-11-12 22:42:33,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:33,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:33,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:33,782 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:33,786 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:42:33,787 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:33,788 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:42:33,788 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:33,788 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:42:33,789 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:42:33,789 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:33,790 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-12 22:42:33,791 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 271 [2021-11-12 22:42:33,791 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:42:33,793 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:33,794 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 250 [2021-11-12 22:42:33,796 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 308 [2021-11-12 22:42:33,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:33,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:33,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:42:33,813 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:33,814 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:42:33,814 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:33,815 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:42:33,815 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:42:33,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:33,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:33,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:33,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2021-11-12 22:42:33,830 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:33,831 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:42:33,832 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:33,832 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:42:33,832 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:42:33,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:33,845 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:33,849 INFO L180 QuantifierPusher]: treesize reduction 97, result has 73.9 percent of original size [2021-11-12 22:42:33,851 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:42:33,852 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:42:33,852 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:379, output treesize:274 [2021-11-12 22:42:33,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:33,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:33,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:33,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:33,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:33,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:33,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:33,876 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:42:33,877 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:42:33,878 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:33,878 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:42:33,878 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:42:33,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:42:33,883 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:33,884 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:42:33,884 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:33,884 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:42:33,884 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:42:33,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:33,886 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:33,891 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:33,892 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:42:33,892 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:42:33,892 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:42:33,895 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:42:33,896 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:42:33,898 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:33,899 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-12 22:42:33,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:33,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:33,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:33,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:33,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:33,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:33,911 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:42:33,912 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:42:33,917 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:42:34,914 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:42:34,915 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:42:34,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60, 60] total 89 [2021-11-12 22:42:34,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931579226] [2021-11-12 22:42:34,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:42:34,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2021-11-12 22:42:34,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:42:34,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2021-11-12 22:42:34,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=8492, Unknown=0, NotChecked=0, Total=8742 [2021-11-12 22:42:34,917 INFO L87 Difference]: Start difference. First operand 116 states and 117 transitions. Second operand has 89 states, 89 states have (on average 2.258426966292135) internal successors, (201), 89 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:38,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:38,798 INFO L93 Difference]: Finished difference Result 123 states and 124 transitions. [2021-11-12 22:42:38,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-11-12 22:42:38,799 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.258426966292135) internal successors, (201), 89 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-12 22:42:38,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:38,800 INFO L225 Difference]: With dead ends: 123 [2021-11-12 22:42:38,800 INFO L226 Difference]: Without dead ends: 121 [2021-11-12 22:42:38,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 305 SyntacticMatches, 6 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1981 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=466, Invalid=15034, Unknown=0, NotChecked=0, Total=15500 [2021-11-12 22:42:38,801 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 38 mSDsluCounter, 1857 mSDsCounter, 0 mSdLazyCounter, 5922 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2143.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1855 SdHoareTripleChecker+Invalid, 6038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.23ms SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 5922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2568.08ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:38,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 1855 Invalid, 6038 Unknown, 0 Unchecked, 10.23ms Time], IncrementalHoareTripleChecker [116 Valid, 5922 Invalid, 0 Unknown, 0 Unchecked, 2568.08ms Time] [2021-11-12 22:42:38,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-11-12 22:42:38,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2021-11-12 22:42:38,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.0169491525423728) internal successors, (120), 118 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:38,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2021-11-12 22:42:38,821 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 115 [2021-11-12 22:42:38,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:38,821 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2021-11-12 22:42:38,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 2.258426966292135) internal successors, (201), 89 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:38,821 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2021-11-12 22:42:38,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-12 22:42:38,822 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:38,822 INFO L514 BasicCegarLoop]: trace histogram [29, 28, 28, 28, 1, 1, 1, 1, 1] [2021-11-12 22:42:38,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2021-11-12 22:42:39,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1428,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:42:39,023 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:42:39,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:39,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1325895004, now seen corresponding path program 52 times [2021-11-12 22:42:39,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:42:39,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927034507] [2021-11-12 22:42:39,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:39,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:42:39,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:40,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 1108 proven. 488 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:42:40,286 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:42:40,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927034507] [2021-11-12 22:42:40,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927034507] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:42:40,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147753896] [2021-11-12 22:42:40,286 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-12 22:42:40,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:42:40,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:42:40,287 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:42:40,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-11-12 22:42:40,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:40,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 60 conjunts are in the unsatisfiable core [2021-11-12 22:42:40,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:42:42,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 1190 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:42:42,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:42:42,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 1190 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:42:42,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147753896] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:42:42,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [362067395] [2021-11-12 22:42:42,494 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:42:42,494 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:42:42,495 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:42:42,495 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:42:42,495 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:42:42,498 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:42,498 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:42:42,499 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:42,499 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:42:42,500 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:42:42,500 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:42,501 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:42:42,502 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:42:42,503 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_167|], 10=[|v_#valid_174|]} [2021-11-12 22:42:42,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:42,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:42:42,510 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:42,510 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:42:42,511 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:42,511 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:42:42,512 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:42:42,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:42,514 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:42,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:42,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:42,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:42,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:42,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:42:42,522 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:42,523 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:42:42,524 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:42,524 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:42:42,524 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:42:42,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:42,526 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:42,527 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:42,528 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:42:42,529 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:42:42,529 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:42:42,532 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:42:42,533 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:42:42,534 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:42,534 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:42:42,535 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:42:42,535 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:42,535 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:42:42,537 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:42:42,539 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_168|], 10=[|v_#valid_175|]} [2021-11-12 22:42:42,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:42,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:42,551 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:42:42,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:42:42,552 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:42,553 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:42:42,553 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:42,554 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:42:42,554 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:42:42,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:42,557 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:42,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:42,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:42,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:42,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:42:42,568 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:42,570 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:42:42,571 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:42,571 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:42:42,571 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:42:42,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:42,574 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:42,576 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:42,577 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:42:42,577 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:42:42,578 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:42:42,580 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:42,581 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:42:42,582 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:42,582 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 22:42:42,584 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-12 22:42:42,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:42,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:42,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-12 22:42:42,594 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:42,595 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:42:42,596 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:42,596 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:42:42,596 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:42:42,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:42,600 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:42,601 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:42,603 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-12 22:42:42,604 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:42:42,604 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:123, output treesize:119 [2021-11-12 22:42:42,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:42,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:42,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:42,635 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:42,641 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:42:42,644 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:42,644 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:42:42,645 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:42,646 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:42:42,647 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:42:42,648 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:42,648 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-12 22:42:42,651 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 271 [2021-11-12 22:42:42,652 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:42:42,654 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:42,656 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 250 [2021-11-12 22:42:42,660 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 308 [2021-11-12 22:42:42,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:42,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:42,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:42:42,680 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:42,681 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:42:42,682 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:42,682 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:42:42,683 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:42:42,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:42,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:42,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:42:42,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2021-11-12 22:42:42,700 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:42,701 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:42:42,702 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:42,703 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:42:42,703 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:42:42,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:42,721 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:42,728 INFO L180 QuantifierPusher]: treesize reduction 97, result has 73.9 percent of original size [2021-11-12 22:42:42,731 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:42:42,732 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:42:42,732 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:379, output treesize:274 [2021-11-12 22:42:42,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:42,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:42,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:42,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:42,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:42,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:42,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:42,766 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:42:42,768 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:42:42,768 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:42,769 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:42:42,769 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:42:42,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:42:42,775 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:42,776 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:42:42,776 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:42,776 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:42:42,777 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:42:42,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:42,779 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:42,779 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:42,780 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:42:42,781 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:42:42,781 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:42:42,785 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:42:42,786 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:42:42,788 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:42,790 INFO L185 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size 71 [2021-11-12 22:42:42,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:42,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:42,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:42,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:42,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:42,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:42,808 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:42:42,811 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-12 22:42:42,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:42,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:42,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:42,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:42,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:42,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:42,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:42,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:42,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:42:42,837 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:42:42,839 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:42:42,876 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:42:43,664 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:42:43,665 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:42:43,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60, 60] total 91 [2021-11-12 22:42:43,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758758636] [2021-11-12 22:42:43,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:42:43,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2021-11-12 22:42:43,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:42:43,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-11-12 22:42:43,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1908, Invalid=7212, Unknown=0, NotChecked=0, Total=9120 [2021-11-12 22:42:43,666 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand has 91 states, 91 states have (on average 2.3076923076923075) internal successors, (210), 91 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:44,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:44,481 INFO L93 Difference]: Finished difference Result 216 states and 218 transitions. [2021-11-12 22:42:44,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-11-12 22:42:44,482 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.3076923076923075) internal successors, (210), 91 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-11-12 22:42:44,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:44,483 INFO L225 Difference]: With dead ends: 216 [2021-11-12 22:42:44,483 INFO L226 Difference]: Without dead ends: 126 [2021-11-12 22:42:44,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4057 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=3238, Invalid=12014, Unknown=0, NotChecked=0, Total=15252 [2021-11-12 22:42:44,484 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 332 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 277.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.82ms SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 335.63ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:44,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 316 Invalid, 838 Unknown, 0 Unchecked, 2.82ms Time], IncrementalHoareTripleChecker [199 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 335.63ms Time] [2021-11-12 22:42:44,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-11-12 22:42:44,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 120. [2021-11-12 22:42:44,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.0168067226890756) internal successors, (121), 119 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:44,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 121 transitions. [2021-11-12 22:42:44,519 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 121 transitions. Word has length 118 [2021-11-12 22:42:44,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:44,520 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 121 transitions. [2021-11-12 22:42:44,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 2.3076923076923075) internal successors, (210), 91 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:42:44,520 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 121 transitions. [2021-11-12 22:42:44,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-12 22:42:44,521 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:44,521 INFO L514 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 1, 1, 1, 1, 1] [2021-11-12 22:42:44,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2021-11-12 22:42:44,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1452 [2021-11-12 22:42:44,722 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:42:44,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:44,722 INFO L85 PathProgramCache]: Analyzing trace with hash 925564226, now seen corresponding path program 53 times [2021-11-12 22:42:44,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:42:44,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080860909] [2021-11-12 22:42:44,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:44,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:42:44,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:47,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 0 proven. 1625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:42:47,291 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:42:47,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080860909] [2021-11-12 22:42:47,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080860909] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:42:47,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876639688] [2021-11-12 22:42:47,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 22:42:47,292 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:42:47,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:42:47,293 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:42:47,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-11-12 22:43:03,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2021-11-12 22:43:03,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:43:03,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 122 conjunts are in the unsatisfiable core [2021-11-12 22:43:03,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:43:03,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-12 22:43:06,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 26 [2021-11-12 22:43:06,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 0 proven. 1625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:43:06,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:43:07,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:43:07,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:43:07,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:43:07,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:43:07,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 0 proven. 1625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:43:07,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876639688] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:43:07,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [407956647] [2021-11-12 22:43:07,402 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:43:07,403 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:43:07,403 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:43:07,403 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:43:07,403 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:43:07,405 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:07,405 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:43:07,406 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:07,406 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:43:07,406 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:43:07,407 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:07,407 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:43:07,408 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:43:07,409 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_170|], 10=[|v_#valid_177|]} [2021-11-12 22:43:07,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:07,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:43:07,415 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:07,415 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:43:07,416 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:07,416 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:43:07,416 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:43:07,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:07,418 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:07,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:07,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:07,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:07,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:07,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:43:07,426 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:07,427 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:43:07,427 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:07,428 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:43:07,428 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:43:07,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:07,430 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:07,430 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:07,431 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:43:07,431 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:43:07,431 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:43:07,434 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:43:07,434 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:43:07,435 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:07,436 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:43:07,436 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:43:07,437 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:07,437 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:43:07,438 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:43:07,439 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_171|], 10=[|v_#valid_178|]} [2021-11-12 22:43:07,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:07,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:07,450 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:43:07,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:43:07,451 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:07,452 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:43:07,452 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:07,453 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:43:07,453 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:43:07,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:07,455 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:07,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:07,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:07,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:07,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:43:07,464 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:07,466 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:43:07,466 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:07,467 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:43:07,467 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:43:07,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:07,469 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:07,470 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:07,471 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:43:07,471 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:43:07,471 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:43:07,473 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:07,474 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:43:07,474 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:07,474 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 22:43:07,475 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-12 22:43:07,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:07,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:07,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-12 22:43:07,485 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:07,486 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:43:07,486 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:07,486 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:43:07,487 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:43:07,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:07,489 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:07,490 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:07,491 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-12 22:43:07,491 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:43:07,492 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:123, output treesize:119 [2021-11-12 22:43:07,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:07,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:07,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:07,514 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:07,518 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:43:07,520 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:07,520 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:43:07,521 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:07,521 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-12 22:43:07,521 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:43:07,522 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:07,522 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:43:07,524 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 271 [2021-11-12 22:43:07,524 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:43:07,526 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:07,527 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 250 [2021-11-12 22:43:07,529 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 308 [2021-11-12 22:43:07,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:07,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:07,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:07,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2021-11-12 22:43:07,550 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:07,551 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:43:07,552 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:07,552 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:43:07,552 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:43:07,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:07,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:07,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:43:07,566 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:07,567 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:43:07,567 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:07,568 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:43:07,568 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:43:07,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:07,581 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:07,585 INFO L180 QuantifierPusher]: treesize reduction 97, result has 73.9 percent of original size [2021-11-12 22:43:07,587 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:43:07,588 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:43:07,588 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:379, output treesize:274 [2021-11-12 22:43:07,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:07,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:07,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:07,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:07,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:07,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:07,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:07,630 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:43:07,631 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:43:07,631 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:07,631 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:43:07,632 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:43:07,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:43:07,638 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:07,638 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:43:07,639 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:07,639 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:43:07,639 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:43:07,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:07,640 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:07,641 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:07,642 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:43:07,642 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:43:07,642 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:43:07,645 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:43:07,646 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:43:07,647 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:07,649 INFO L185 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size 71 [2021-11-12 22:43:07,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:07,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:07,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:07,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:07,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:07,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:07,660 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:07,662 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-12 22:43:07,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:07,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:07,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:07,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:07,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:07,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:07,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:07,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:07,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:07,678 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:43:07,680 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:43:07,684 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:43:08,700 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:43:08,700 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:43:08,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62, 62] total 92 [2021-11-12 22:43:08,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266182479] [2021-11-12 22:43:08,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:43:08,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2021-11-12 22:43:08,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:43:08,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-11-12 22:43:08,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=9054, Unknown=0, NotChecked=0, Total=9312 [2021-11-12 22:43:08,702 INFO L87 Difference]: Start difference. First operand 120 states and 121 transitions. Second operand has 92 states, 92 states have (on average 2.260869565217391) internal successors, (208), 92 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:43:13,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:43:13,094 INFO L93 Difference]: Finished difference Result 127 states and 128 transitions. [2021-11-12 22:43:13,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-11-12 22:43:13,095 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 2.260869565217391) internal successors, (208), 92 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-11-12 22:43:13,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:43:13,095 INFO L225 Difference]: With dead ends: 127 [2021-11-12 22:43:13,096 INFO L226 Difference]: Without dead ends: 125 [2021-11-12 22:43:13,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 316 SyntacticMatches, 6 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2109 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=481, Invalid=16031, Unknown=0, NotChecked=0, Total=16512 [2021-11-12 22:43:13,097 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 38 mSDsluCounter, 2123 mSDsCounter, 0 mSdLazyCounter, 6728 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2484.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 2123 SdHoareTripleChecker+Invalid, 6847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.68ms SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 6728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2974.34ms IncrementalHoareTripleChecker+Time [2021-11-12 22:43:13,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 2123 Invalid, 6847 Unknown, 0 Unchecked, 11.68ms Time], IncrementalHoareTripleChecker [119 Valid, 6728 Invalid, 0 Unknown, 0 Unchecked, 2974.34ms Time] [2021-11-12 22:43:13,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-12 22:43:13,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2021-11-12 22:43:13,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.0163934426229508) internal successors, (124), 122 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:43:13,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2021-11-12 22:43:13,130 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 119 [2021-11-12 22:43:13,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:43:13,131 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2021-11-12 22:43:13,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 2.260869565217391) internal successors, (208), 92 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:43:13,131 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2021-11-12 22:43:13,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-12 22:43:13,132 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:43:13,132 INFO L514 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 1, 1, 1, 1, 1] [2021-11-12 22:43:13,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2021-11-12 22:43:13,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1485 [2021-11-12 22:43:13,350 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:43:13,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:43:13,350 INFO L85 PathProgramCache]: Analyzing trace with hash -201390085, now seen corresponding path program 54 times [2021-11-12 22:43:13,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:43:13,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292532298] [2021-11-12 22:43:13,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:43:13,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:43:13,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:43:14,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 1191 proven. 520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:43:14,670 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:43:14,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292532298] [2021-11-12 22:43:14,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292532298] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:43:14,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396809506] [2021-11-12 22:43:14,670 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-12 22:43:14,670 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:43:14,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:43:14,671 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:43:14,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-11-12 22:43:14,758 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-12 22:43:14,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:43:14,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 62 conjunts are in the unsatisfiable core [2021-11-12 22:43:14,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:43:16,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 1276 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:43:16,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:43:16,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 1276 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:43:16,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396809506] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:43:16,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1251808435] [2021-11-12 22:43:16,980 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:43:16,980 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:43:16,980 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:43:16,980 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:43:16,981 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:43:16,987 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:16,988 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:43:16,988 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:16,989 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:43:16,989 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:43:16,990 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:16,990 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:43:16,991 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:43:16,993 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_173|], 10=[|v_#valid_180|]} [2021-11-12 22:43:16,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:17,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:43:17,000 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:17,001 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:43:17,001 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:17,002 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:43:17,002 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:43:17,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:17,004 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:17,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:17,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:17,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:17,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:17,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:43:17,015 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:17,016 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:43:17,017 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:17,017 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:43:17,017 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:43:17,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:17,019 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:17,019 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:17,020 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:43:17,020 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:43:17,020 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:43:17,023 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:43:17,023 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:43:17,024 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:17,024 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:43:17,024 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:43:17,025 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:17,025 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:43:17,026 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:43:17,027 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_174|], 10=[|v_#valid_181|]} [2021-11-12 22:43:17,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:17,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:17,039 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:43:17,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:43:17,040 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:17,041 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:43:17,041 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:17,042 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:43:17,042 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:43:17,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:17,044 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:17,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:17,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:17,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:17,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:43:17,054 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:17,055 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:43:17,056 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:17,056 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:43:17,056 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:43:17,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:17,058 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:17,059 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:17,060 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:43:17,060 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:43:17,060 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:43:17,062 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:17,063 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:43:17,063 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:17,063 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 22:43:17,065 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-11-12 22:43:17,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:17,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:17,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-12 22:43:17,074 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:17,075 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:43:17,075 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:17,076 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:43:17,076 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:43:17,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:17,078 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:17,079 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:17,080 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 112 [2021-11-12 22:43:17,080 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:43:17,080 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:116, output treesize:112 [2021-11-12 22:43:17,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:17,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:17,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:17,103 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:17,107 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:43:17,108 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:17,109 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:43:17,109 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:17,110 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-12 22:43:17,110 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:43:17,110 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:17,111 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:43:17,113 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 266 [2021-11-12 22:43:17,113 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:43:17,114 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:17,116 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 245 [2021-11-12 22:43:17,117 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 303 [2021-11-12 22:43:17,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:17,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:17,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:17,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2021-11-12 22:43:17,137 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:17,138 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:43:17,139 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:17,139 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:43:17,139 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:43:17,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:17,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:17,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:43:17,151 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:17,152 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:43:17,152 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:17,153 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:43:17,153 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:43:17,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:17,164 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:17,168 INFO L180 QuantifierPusher]: treesize reduction 92, result has 74.9 percent of original size [2021-11-12 22:43:17,170 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:43:17,171 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:43:17,171 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:374, output treesize:274 [2021-11-12 22:43:17,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:17,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:17,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:17,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:17,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:17,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:17,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:17,193 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:43:17,194 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:43:17,195 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:17,195 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:43:17,196 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:43:17,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:43:17,200 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:17,200 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:43:17,201 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:17,201 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:43:17,201 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:43:17,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:17,209 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:17,210 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:17,210 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:43:17,210 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:43:17,210 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:43:17,213 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:43:17,214 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:43:17,215 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:17,217 INFO L185 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size 71 [2021-11-12 22:43:17,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:17,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:17,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:17,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:17,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:17,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:17,228 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:17,230 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-12 22:43:17,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:17,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:17,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:17,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:17,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:17,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:17,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:17,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:17,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:17,247 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:43:17,248 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:43:17,252 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:43:17,983 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:43:17,983 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:43:17,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62, 62] total 94 [2021-11-12 22:43:17,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557954554] [2021-11-12 22:43:17,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:43:17,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-11-12 22:43:17,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:43:17,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-11-12 22:43:17,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2033, Invalid=7669, Unknown=0, NotChecked=0, Total=9702 [2021-11-12 22:43:17,986 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand has 94 states, 94 states have (on average 2.3085106382978724) internal successors, (217), 94 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:43:18,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:43:18,850 INFO L93 Difference]: Finished difference Result 223 states and 225 transitions. [2021-11-12 22:43:18,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-11-12 22:43:18,851 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 2.3085106382978724) internal successors, (217), 94 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-12 22:43:18,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:43:18,852 INFO L225 Difference]: With dead ends: 223 [2021-11-12 22:43:18,852 INFO L226 Difference]: Without dead ends: 130 [2021-11-12 22:43:18,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4317 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=3454, Invalid=12802, Unknown=0, NotChecked=0, Total=16256 [2021-11-12 22:43:18,853 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 336 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 290.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.94ms SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 349.79ms IncrementalHoareTripleChecker+Time [2021-11-12 22:43:18,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 285 Invalid, 817 Unknown, 0 Unchecked, 2.94ms Time], IncrementalHoareTripleChecker [230 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 349.79ms Time] [2021-11-12 22:43:18,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-11-12 22:43:18,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 124. [2021-11-12 22:43:18,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.016260162601626) internal successors, (125), 123 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:43:18,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 125 transitions. [2021-11-12 22:43:18,876 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 125 transitions. Word has length 122 [2021-11-12 22:43:18,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:43:18,876 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 125 transitions. [2021-11-12 22:43:18,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 2.3085106382978724) internal successors, (217), 94 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:43:18,877 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 125 transitions. [2021-11-12 22:43:18,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-12 22:43:18,878 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:43:18,878 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 1, 1, 1, 1, 1] [2021-11-12 22:43:18,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2021-11-12 22:43:19,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1518,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:43:19,086 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:43:19,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:43:19,087 INFO L85 PathProgramCache]: Analyzing trace with hash 997987553, now seen corresponding path program 55 times [2021-11-12 22:43:19,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:43:19,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425378240] [2021-11-12 22:43:19,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:43:19,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:43:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:43:21,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 0 proven. 1741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:43:21,921 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:43:21,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425378240] [2021-11-12 22:43:21,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425378240] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:43:21,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55143979] [2021-11-12 22:43:21,921 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-12 22:43:21,921 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:43:21,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:43:21,922 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:43:21,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-11-12 22:43:22,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:43:22,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 126 conjunts are in the unsatisfiable core [2021-11-12 22:43:22,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:43:22,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-12 22:43:25,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 26 [2021-11-12 22:43:25,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 0 proven. 1741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:43:25,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:43:25,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:43:25,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:43:25,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:43:25,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:43:26,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 0 proven. 1741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:43:26,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55143979] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:43:26,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1590136749] [2021-11-12 22:43:26,149 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:43:26,149 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:43:26,150 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:43:26,150 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:43:26,150 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:43:26,156 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:26,156 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:43:26,156 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:26,157 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:43:26,157 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:43:26,174 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:26,174 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:43:26,176 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:43:26,177 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_176|], 10=[|v_#valid_183|]} [2021-11-12 22:43:26,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:26,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:43:26,184 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:26,185 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:43:26,185 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:26,186 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:43:26,186 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:43:26,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:26,188 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:26,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:26,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:26,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:26,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:26,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:43:26,198 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:26,199 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:43:26,200 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:26,200 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:43:26,200 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:43:26,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:26,202 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:26,203 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:26,204 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:43:26,205 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:43:26,205 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:43:26,208 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:43:26,209 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:43:26,209 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:26,210 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:43:26,210 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:43:26,211 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:26,211 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:43:26,213 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:43:26,215 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_177|], 10=[|v_#valid_184|]} [2021-11-12 22:43:26,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:26,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:26,227 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:43:26,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:43:26,228 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:26,229 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:43:26,230 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:26,230 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:43:26,230 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:43:26,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:26,234 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:26,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:26,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:26,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:26,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:43:26,245 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:26,246 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:43:26,247 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:26,247 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:43:26,248 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:43:26,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:26,251 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:26,252 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:26,253 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:43:26,254 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:43:26,254 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:43:26,256 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:26,258 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:43:26,258 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:26,259 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 22:43:26,260 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-12 22:43:26,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:26,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:26,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-12 22:43:26,270 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:26,271 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:43:26,271 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:26,272 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:43:26,272 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:43:26,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:26,274 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:26,275 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:26,276 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-12 22:43:26,276 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:43:26,276 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:123, output treesize:119 [2021-11-12 22:43:26,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:26,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:26,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:26,297 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:26,300 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:43:26,302 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:26,302 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:43:26,303 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:26,303 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-12 22:43:26,304 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:43:26,304 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:26,304 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:43:26,306 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 271 [2021-11-12 22:43:26,306 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:43:26,307 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:26,309 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 250 [2021-11-12 22:43:26,310 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 308 [2021-11-12 22:43:26,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:26,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:26,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:43:26,326 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:26,327 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:43:26,327 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:26,327 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:43:26,327 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:43:26,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:26,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:26,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:43:26,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2021-11-12 22:43:26,341 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:26,342 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:43:26,343 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:26,343 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:43:26,343 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:43:26,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:26,380 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:26,384 INFO L180 QuantifierPusher]: treesize reduction 97, result has 73.9 percent of original size [2021-11-12 22:43:26,386 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:43:26,386 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:43:26,386 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:379, output treesize:274 [2021-11-12 22:43:26,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:26,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:26,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:26,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:26,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:26,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:26,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:26,409 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:43:26,409 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:43:26,410 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:26,410 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:43:26,411 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:43:26,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:43:26,418 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:26,418 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:43:26,418 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:26,419 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:43:26,419 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:43:26,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:26,420 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:26,420 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:26,421 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:43:26,421 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:43:26,421 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:43:26,424 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:43:26,425 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:43:26,427 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:26,428 INFO L185 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size 71 [2021-11-12 22:43:26,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:26,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:26,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:26,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:26,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:26,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:26,439 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:43:26,441 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-12 22:43:26,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:26,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:26,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:26,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:26,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:26,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:26,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:26,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:26,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:43:26,466 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:43:26,467 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:43:26,472 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:43:27,534 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:43:27,534 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:43:27,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 95 [2021-11-12 22:43:27,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729505752] [2021-11-12 22:43:27,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:43:27,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2021-11-12 22:43:27,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:43:27,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2021-11-12 22:43:27,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=9634, Unknown=0, NotChecked=0, Total=9900 [2021-11-12 22:43:27,536 INFO L87 Difference]: Start difference. First operand 124 states and 125 transitions. Second operand has 95 states, 95 states have (on average 2.263157894736842) internal successors, (215), 95 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:43:32,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:43:32,229 INFO L93 Difference]: Finished difference Result 131 states and 132 transitions. [2021-11-12 22:43:32,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-11-12 22:43:32,230 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 2.263157894736842) internal successors, (215), 95 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2021-11-12 22:43:32,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:43:32,230 INFO L225 Difference]: With dead ends: 131 [2021-11-12 22:43:32,230 INFO L226 Difference]: Without dead ends: 129 [2021-11-12 22:43:32,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 327 SyntacticMatches, 6 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2241 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=496, Invalid=17060, Unknown=0, NotChecked=0, Total=17556 [2021-11-12 22:43:32,232 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 38 mSDsluCounter, 2290 mSDsCounter, 0 mSdLazyCounter, 7203 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2660.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 2288 SdHoareTripleChecker+Invalid, 7325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.73ms SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 7203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3204.00ms IncrementalHoareTripleChecker+Time [2021-11-12 22:43:32,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 2288 Invalid, 7325 Unknown, 0 Unchecked, 12.73ms Time], IncrementalHoareTripleChecker [122 Valid, 7203 Invalid, 0 Unknown, 0 Unchecked, 3204.00ms Time] [2021-11-12 22:43:32,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-11-12 22:43:32,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 127. [2021-11-12 22:43:32,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.0158730158730158) internal successors, (128), 126 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:43:32,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2021-11-12 22:43:32,254 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 123 [2021-11-12 22:43:32,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:43:32,254 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2021-11-12 22:43:32,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 2.263157894736842) internal successors, (215), 95 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:43:32,255 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2021-11-12 22:43:32,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-12 22:43:32,255 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:43:32,255 INFO L514 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 1, 1, 1, 1, 1] [2021-11-12 22:43:32,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2021-11-12 22:43:32,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1551 [2021-11-12 22:43:32,456 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:43:32,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:43:32,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1288361980, now seen corresponding path program 56 times [2021-11-12 22:43:32,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:43:32,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421479347] [2021-11-12 22:43:32,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:43:32,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:43:32,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:43:33,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 1277 proven. 553 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:43:33,769 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:43:33,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421479347] [2021-11-12 22:43:33,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421479347] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:43:33,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095567883] [2021-11-12 22:43:33,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 22:43:33,769 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:43:33,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:43:33,770 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:43:33,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-11-12 22:43:58,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 31 check-sat command(s) [2021-11-12 22:43:58,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:43:58,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 64 conjunts are in the unsatisfiable core [2021-11-12 22:43:58,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:44:00,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 1365 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:44:00,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:44:00,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 1365 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:44:00,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095567883] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:44:00,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [548994241] [2021-11-12 22:44:00,508 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:44:00,508 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:44:00,508 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:44:00,508 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:44:00,508 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:44:00,535 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:00,535 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:00,535 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:00,536 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:44:00,536 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:00,536 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:00,536 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:44:00,537 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:44:00,538 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_179|], 10=[|v_#valid_186|]} [2021-11-12 22:44:00,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:00,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:44:00,542 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:00,543 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:44:00,543 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:00,543 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:44:00,543 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:44:00,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:00,545 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:00,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:00,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:00,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:00,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:00,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:44:00,551 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:00,552 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:44:00,552 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:00,552 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:44:00,552 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:44:00,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:00,554 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:00,554 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:00,555 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:44:00,555 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:44:00,555 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:44:00,557 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:44:00,557 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:00,557 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:00,558 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:44:00,558 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:00,558 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:00,558 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:44:00,559 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:44:00,560 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_180|], 10=[|v_#valid_187|]} [2021-11-12 22:44:00,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:00,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:00,568 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:44:00,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:44:00,569 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:00,569 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:44:00,570 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:00,570 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:44:00,570 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:44:00,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:00,572 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:00,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:00,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:00,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:00,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:44:00,579 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:00,580 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:44:00,581 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:00,581 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:44:00,581 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:44:00,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:00,583 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:00,584 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:00,584 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:44:00,584 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:44:00,585 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:44:00,586 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:00,586 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:00,587 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:00,587 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:44:00,588 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-11-12 22:44:00,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:00,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:00,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:44:00,595 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:00,596 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:44:00,596 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:00,597 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:44:00,597 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:44:00,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:00,599 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:00,601 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:00,602 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-11-12 22:44:00,602 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:44:00,602 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:125, output treesize:121 [2021-11-12 22:44:00,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:00,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:00,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:00,619 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:00,622 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:00,623 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:00,624 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:00,624 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:00,624 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:44:00,625 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:00,625 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:00,625 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-12 22:44:00,627 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 275 [2021-11-12 22:44:00,627 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:00,628 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:00,629 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 254 [2021-11-12 22:44:00,630 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 312 [2021-11-12 22:44:00,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:00,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:00,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:00,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 56 [2021-11-12 22:44:00,662 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:00,662 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-12 22:44:00,663 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:00,663 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-12 22:44:00,663 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:44:00,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:00,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:00,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:44:00,673 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:00,674 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:44:00,674 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:00,674 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:44:00,674 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:44:00,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:00,684 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:00,688 INFO L180 QuantifierPusher]: treesize reduction 94, result has 74.9 percent of original size [2021-11-12 22:44:00,689 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 281 [2021-11-12 22:44:00,690 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:44:00,690 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:383, output treesize:281 [2021-11-12 22:44:00,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:00,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:00,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:00,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:00,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:00,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:00,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:00,708 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:44:00,708 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:00,709 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:00,709 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:44:00,710 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:44:00,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:44:00,713 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:00,714 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:44:00,714 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:00,714 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:44:00,714 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:44:00,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:00,715 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:00,716 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:00,716 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:44:00,716 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:44:00,716 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:44:00,719 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:44:00,719 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:44:00,720 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:00,732 INFO L185 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size 71 [2021-11-12 22:44:00,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:00,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:00,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:00,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:00,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:00,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:00,741 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:00,743 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-12 22:44:00,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:00,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:00,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:00,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:00,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:00,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:00,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:00,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:00,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:00,771 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:44:00,772 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:44:00,776 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:44:01,404 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:44:01,404 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:44:01,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 97 [2021-11-12 22:44:01,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46873441] [2021-11-12 22:44:01,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:44:01,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2021-11-12 22:44:01,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:44:01,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-11-12 22:44:01,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2162, Invalid=8140, Unknown=0, NotChecked=0, Total=10302 [2021-11-12 22:44:01,406 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand has 97 states, 97 states have (on average 2.3092783505154637) internal successors, (224), 97 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:44:02,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:44:02,133 INFO L93 Difference]: Finished difference Result 230 states and 232 transitions. [2021-11-12 22:44:02,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-12 22:44:02,133 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.3092783505154637) internal successors, (224), 97 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2021-11-12 22:44:02,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:44:02,134 INFO L225 Difference]: With dead ends: 230 [2021-11-12 22:44:02,134 INFO L226 Difference]: Without dead ends: 134 [2021-11-12 22:44:02,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4585 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=3677, Invalid=13615, Unknown=0, NotChecked=0, Total=17292 [2021-11-12 22:44:02,135 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 324 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 228.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.12ms SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 277.01ms IncrementalHoareTripleChecker+Time [2021-11-12 22:44:02,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 285 Invalid, 810 Unknown, 0 Unchecked, 2.12ms Time], IncrementalHoareTripleChecker [226 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 277.01ms Time] [2021-11-12 22:44:02,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-11-12 22:44:02,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 128. [2021-11-12 22:44:02,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.015748031496063) internal successors, (129), 127 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:44:02,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 129 transitions. [2021-11-12 22:44:02,160 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 129 transitions. Word has length 126 [2021-11-12 22:44:02,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:44:02,160 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 129 transitions. [2021-11-12 22:44:02,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.3092783505154637) internal successors, (224), 97 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:44:02,160 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 129 transitions. [2021-11-12 22:44:02,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-12 22:44:02,161 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:44:02,161 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 1, 1, 1, 1, 1] [2021-11-12 22:44:02,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2021-11-12 22:44:02,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1584 [2021-11-12 22:44:02,361 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:44:02,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:44:02,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1133183458, now seen corresponding path program 57 times [2021-11-12 22:44:02,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:44:02,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821584395] [2021-11-12 22:44:02,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:44:02,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:44:02,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:44:04,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1861 backedges. 0 proven. 1861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:44:04,880 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:44:04,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821584395] [2021-11-12 22:44:04,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821584395] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:44:04,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762929607] [2021-11-12 22:44:04,880 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-12 22:44:04,880 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:44:04,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:44:04,881 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:44:04,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-11-12 22:44:04,972 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-12 22:44:04,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:44:04,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 130 conjunts are in the unsatisfiable core [2021-11-12 22:44:04,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:44:05,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-12 22:44:07,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 26 [2021-11-12 22:44:07,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1861 backedges. 0 proven. 1861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:44:07,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:44:08,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:44:08,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:44:08,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:44:08,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:44:08,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1861 backedges. 0 proven. 1861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:44:08,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762929607] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:44:08,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [227902937] [2021-11-12 22:44:08,726 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:44:08,726 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:44:08,726 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:44:08,726 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:44:08,726 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:44:08,728 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:08,728 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:08,728 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:08,729 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:44:08,729 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:08,729 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:08,729 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:44:08,730 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:44:08,731 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_182|], 10=[|v_#valid_189|]} [2021-11-12 22:44:08,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:08,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:44:08,735 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:08,735 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:44:08,735 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:08,736 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:44:08,736 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:44:08,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:08,737 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:08,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:08,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:08,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:08,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:08,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:44:08,743 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:08,744 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:44:08,744 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:08,745 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:44:08,745 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:44:08,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:08,746 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:08,746 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:08,747 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:44:08,747 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:44:08,747 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:44:08,749 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:44:08,749 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:08,750 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:08,750 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:44:08,750 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:08,750 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:08,751 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:44:08,751 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:44:08,752 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_183|], 10=[|v_#valid_190|]} [2021-11-12 22:44:08,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:08,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:08,760 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:44:08,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:44:08,761 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:08,762 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:44:08,762 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:08,762 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:44:08,762 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:44:08,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:08,764 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:08,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:08,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:08,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:08,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:44:08,771 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:08,772 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:44:08,773 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:08,773 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:44:08,773 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:44:08,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:08,775 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:08,775 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:08,776 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:44:08,776 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:44:08,776 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:44:08,777 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:08,778 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:08,778 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:08,779 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 22:44:08,780 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-12 22:44:08,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:08,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:08,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-12 22:44:08,786 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:08,787 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:44:08,787 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:08,788 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:44:08,788 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:44:08,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:08,790 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:08,790 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:08,791 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-12 22:44:08,791 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:44:08,791 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:123, output treesize:119 [2021-11-12 22:44:08,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:08,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:08,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:08,809 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:08,812 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:08,813 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:08,813 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:08,814 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:08,814 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-12 22:44:08,814 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:08,815 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:08,815 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:44:08,816 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 271 [2021-11-12 22:44:08,817 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:08,818 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:08,819 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 250 [2021-11-12 22:44:08,820 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 308 [2021-11-12 22:44:08,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:08,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:08,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:44:08,833 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:08,834 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:44:08,834 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:08,835 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:44:08,835 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:44:08,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:08,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:08,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:08,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2021-11-12 22:44:08,846 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:08,847 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:44:08,847 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:08,847 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:44:08,847 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:44:08,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:08,858 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:08,861 INFO L180 QuantifierPusher]: treesize reduction 97, result has 73.9 percent of original size [2021-11-12 22:44:08,863 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:44:08,863 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:44:08,864 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:379, output treesize:274 [2021-11-12 22:44:08,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:08,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:08,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:08,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:08,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:08,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:08,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:08,883 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:44:08,884 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:08,884 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:08,884 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:44:08,885 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:44:08,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:44:08,889 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:08,889 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:44:08,889 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:08,889 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:44:08,889 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:44:08,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:08,891 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:08,891 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:08,891 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:44:08,892 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:44:08,892 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:44:08,894 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:44:08,895 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:44:08,910 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:08,912 INFO L185 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size 71 [2021-11-12 22:44:08,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:08,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:08,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:08,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:08,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:08,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:08,926 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:08,927 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-12 22:44:08,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:08,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:08,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:08,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:08,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:08,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:08,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:08,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:08,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:08,941 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:44:08,947 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:44:08,952 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:44:09,880 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:44:09,880 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:44:09,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66, 66] total 98 [2021-11-12 22:44:09,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731432219] [2021-11-12 22:44:09,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:44:09,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2021-11-12 22:44:09,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:44:09,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2021-11-12 22:44:09,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=10232, Unknown=0, NotChecked=0, Total=10506 [2021-11-12 22:44:09,884 INFO L87 Difference]: Start difference. First operand 128 states and 129 transitions. Second operand has 98 states, 98 states have (on average 2.2653061224489797) internal successors, (222), 98 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:44:13,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:44:13,973 INFO L93 Difference]: Finished difference Result 135 states and 136 transitions. [2021-11-12 22:44:13,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-11-12 22:44:13,973 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 2.2653061224489797) internal successors, (222), 98 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2021-11-12 22:44:13,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:44:13,974 INFO L225 Difference]: With dead ends: 135 [2021-11-12 22:44:13,974 INFO L226 Difference]: Without dead ends: 133 [2021-11-12 22:44:13,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 338 SyntacticMatches, 6 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2377 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=511, Invalid=18121, Unknown=0, NotChecked=0, Total=18632 [2021-11-12 22:44:13,975 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 41 mSDsluCounter, 2455 mSDsCounter, 0 mSdLazyCounter, 7338 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2281.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 2455 SdHoareTripleChecker+Invalid, 7466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.09ms SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 7338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2728.73ms IncrementalHoareTripleChecker+Time [2021-11-12 22:44:13,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 2455 Invalid, 7466 Unknown, 0 Unchecked, 10.09ms Time], IncrementalHoareTripleChecker [128 Valid, 7338 Invalid, 0 Unknown, 0 Unchecked, 2728.73ms Time] [2021-11-12 22:44:13,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-11-12 22:44:13,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 131. [2021-11-12 22:44:14,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.0153846153846153) internal successors, (132), 130 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:44:14,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2021-11-12 22:44:14,000 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 127 [2021-11-12 22:44:14,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:44:14,001 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2021-11-12 22:44:14,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 2.2653061224489797) internal successors, (222), 98 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:44:14,001 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2021-11-12 22:44:14,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-12 22:44:14,002 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:44:14,002 INFO L514 BasicCegarLoop]: trace histogram [32, 31, 31, 31, 1, 1, 1, 1, 1] [2021-11-12 22:44:14,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2021-11-12 22:44:14,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1617,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:44:14,230 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:44:14,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:44:14,230 INFO L85 PathProgramCache]: Analyzing trace with hash 230244187, now seen corresponding path program 58 times [2021-11-12 22:44:14,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:44:14,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297820840] [2021-11-12 22:44:14,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:44:14,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:44:14,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:44:15,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 1366 proven. 587 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:44:15,432 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:44:15,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297820840] [2021-11-12 22:44:15,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297820840] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:44:15,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213288037] [2021-11-12 22:44:15,432 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-12 22:44:15,433 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:44:15,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:44:15,433 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:44:15,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-11-12 22:44:15,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:44:15,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 66 conjunts are in the unsatisfiable core [2021-11-12 22:44:15,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:44:17,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 1457 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:44:17,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:44:17,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 1457 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:44:17,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213288037] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:44:17,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2016264335] [2021-11-12 22:44:17,609 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:44:17,609 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:44:17,610 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:44:17,610 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:44:17,610 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:44:17,613 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:17,614 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:17,614 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:17,614 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:44:17,615 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:17,615 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:17,615 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:44:17,616 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:44:17,617 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_185|], 10=[|v_#valid_192|]} [2021-11-12 22:44:17,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:17,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:44:17,621 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:17,621 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:44:17,621 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:17,622 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:44:17,622 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:44:17,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:17,623 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:17,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:17,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:17,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:17,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:17,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:44:17,629 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:17,630 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:44:17,631 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:17,631 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:44:17,631 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:44:17,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:17,632 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:17,633 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:17,633 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:44:17,634 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:44:17,634 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:44:17,636 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:44:17,636 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:17,636 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:17,637 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:44:17,637 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:17,637 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:17,638 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:44:17,638 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:44:17,639 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_186|], 10=[|v_#valid_193|]} [2021-11-12 22:44:17,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:17,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:17,648 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:44:17,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:44:17,648 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:17,649 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:44:17,649 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:17,650 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:44:17,650 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:44:17,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:17,652 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:17,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:17,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:17,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:17,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:44:17,662 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:17,663 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:44:17,664 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:17,664 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:44:17,664 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:44:17,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:17,666 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:17,666 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:17,667 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:44:17,667 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:44:17,667 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:44:17,669 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:17,669 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:17,670 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:17,670 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:44:17,671 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-11-12 22:44:17,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:17,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:17,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:44:17,678 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:17,679 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:44:17,679 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:17,680 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:44:17,680 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:44:17,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:17,682 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:17,683 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:17,683 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-11-12 22:44:17,684 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:44:17,684 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:132, output treesize:128 [2021-11-12 22:44:17,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:17,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:17,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:17,705 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:17,708 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:17,709 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:17,709 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:17,709 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:17,710 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-12 22:44:17,710 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:17,710 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:17,711 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:44:17,712 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:44:17,712 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:17,713 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:17,714 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 253 [2021-11-12 22:44:17,716 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 314 [2021-11-12 22:44:17,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:17,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:17,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:44:17,729 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:17,729 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:44:17,730 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:17,730 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:44:17,730 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:44:17,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:17,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:17,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:17,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 56 [2021-11-12 22:44:17,741 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:17,742 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-12 22:44:17,742 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:17,742 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-12 22:44:17,742 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:44:17,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:17,752 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:17,756 INFO L180 QuantifierPusher]: treesize reduction 99, result has 73.9 percent of original size [2021-11-12 22:44:17,757 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 281 [2021-11-12 22:44:17,758 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:44:17,758 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:388, output treesize:281 [2021-11-12 22:44:17,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:17,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:17,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:17,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:17,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:17,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:17,774 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:44:17,775 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:17,775 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:17,776 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:44:17,776 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:44:17,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:44:17,780 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:17,780 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:44:17,780 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:17,780 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:44:17,781 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:44:17,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:17,782 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:17,782 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:17,782 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:44:17,783 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:44:17,783 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:44:17,785 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:44:17,786 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:44:17,787 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:17,788 INFO L185 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size 71 [2021-11-12 22:44:17,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:17,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:17,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:17,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:17,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:17,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:17,797 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:17,798 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-12 22:44:17,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:17,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:17,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:17,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:17,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:17,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:17,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:17,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:17,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:17,811 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:44:17,812 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:44:17,816 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:44:18,468 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:44:18,468 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:44:18,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66, 66] total 100 [2021-11-12 22:44:18,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298030892] [2021-11-12 22:44:18,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:44:18,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2021-11-12 22:44:18,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:44:18,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-11-12 22:44:18,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2295, Invalid=8625, Unknown=0, NotChecked=0, Total=10920 [2021-11-12 22:44:18,470 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand has 100 states, 100 states have (on average 2.31) internal successors, (231), 100 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:44:19,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:44:19,234 INFO L93 Difference]: Finished difference Result 237 states and 239 transitions. [2021-11-12 22:44:19,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-11-12 22:44:19,235 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.31) internal successors, (231), 100 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-12 22:44:19,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:44:19,236 INFO L225 Difference]: With dead ends: 237 [2021-11-12 22:44:19,236 INFO L226 Difference]: Without dead ends: 138 [2021-11-12 22:44:19,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4861 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=3907, Invalid=14453, Unknown=0, NotChecked=0, Total=18360 [2021-11-12 22:44:19,237 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 396 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 240.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.27ms SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 291.02ms IncrementalHoareTripleChecker+Time [2021-11-12 22:44:19,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [396 Valid, 287 Invalid, 854 Unknown, 0 Unchecked, 2.27ms Time], IncrementalHoareTripleChecker [265 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 291.02ms Time] [2021-11-12 22:44:19,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-11-12 22:44:19,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 132. [2021-11-12 22:44:19,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.015267175572519) internal successors, (133), 131 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:44:19,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 133 transitions. [2021-11-12 22:44:19,258 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 133 transitions. Word has length 130 [2021-11-12 22:44:19,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:44:19,258 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 133 transitions. [2021-11-12 22:44:19,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 2.31) internal successors, (231), 100 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:44:19,258 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 133 transitions. [2021-11-12 22:44:19,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-12 22:44:19,259 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:44:19,259 INFO L514 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 1, 1, 1, 1, 1] [2021-11-12 22:44:19,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2021-11-12 22:44:19,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1650 [2021-11-12 22:44:19,459 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:44:19,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:44:19,460 INFO L85 PathProgramCache]: Analyzing trace with hash -219806143, now seen corresponding path program 59 times [2021-11-12 22:44:19,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:44:19,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2673838] [2021-11-12 22:44:19,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:44:19,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:44:19,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:44:22,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1985 backedges. 0 proven. 1985 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:44:22,141 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:44:22,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2673838] [2021-11-12 22:44:22,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2673838] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:44:22,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328866611] [2021-11-12 22:44:22,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 22:44:22,141 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:44:22,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:44:22,142 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:44:22,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-11-12 22:44:40,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2021-11-12 22:44:40,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:44:40,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 134 conjunts are in the unsatisfiable core [2021-11-12 22:44:40,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:44:41,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-12 22:44:43,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 26 [2021-11-12 22:44:44,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1985 backedges. 0 proven. 1985 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:44:44,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:44:44,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:44:44,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:44:44,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:44:44,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:44:44,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1985 backedges. 0 proven. 1985 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:44:44,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328866611] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:44:44,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [735058894] [2021-11-12 22:44:44,844 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:44:44,845 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:44:44,845 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:44:44,845 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:44:44,845 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:44:44,851 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:44,852 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:44,852 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:44,852 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:44:44,852 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:44,853 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:44,853 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:44:44,854 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:44:44,855 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_188|], 10=[|v_#valid_195|]} [2021-11-12 22:44:44,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:44,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:44:44,859 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:44,859 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:44:44,859 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:44,859 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:44:44,860 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:44:44,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:44,861 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:44,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:44,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:44,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:44,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:44,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:44:44,867 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:44,868 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:44:44,868 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:44,868 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:44:44,868 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:44:44,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:44,870 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:44,870 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:44,870 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:44:44,871 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:44:44,871 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:44:44,873 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:44:44,873 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:44,873 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:44,874 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:44:44,874 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:44,874 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:44,874 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:44:44,875 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:44:44,876 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_189|], 10=[|v_#valid_196|]} [2021-11-12 22:44:44,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:44,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:44,885 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:44:44,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:44:44,885 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:44,886 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:44:44,886 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:44,886 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:44:44,887 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:44:44,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:44,888 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:44,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:44,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:44,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:44,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:44:44,896 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:44,897 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:44:44,897 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:44,897 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:44:44,898 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:44:44,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:44,899 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:44,900 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:44,901 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:44:44,901 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:44:44,901 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:44:44,902 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:44,903 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:44,903 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:44,903 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 22:44:44,904 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-12 22:44:44,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:44,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:44,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-12 22:44:44,911 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:44,912 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:44:44,912 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:44,912 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:44:44,913 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:44:44,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:44,915 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:44,915 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:44,916 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-12 22:44:44,916 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:44:44,917 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:123, output treesize:119 [2021-11-12 22:44:44,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:44,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:44,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:44,937 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:44,940 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:44,941 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:44,942 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:44,942 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:44,942 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-12 22:44:44,943 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:44,943 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:44,943 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:44:44,945 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 271 [2021-11-12 22:44:44,945 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:44,946 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:44,947 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 250 [2021-11-12 22:44:44,949 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 308 [2021-11-12 22:44:44,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:44,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:44,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:44:44,977 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:44,977 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:44:44,978 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:44,978 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:44:44,978 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:44:44,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:44,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:44,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:44,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2021-11-12 22:44:44,989 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:44,990 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:44:44,991 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:44,991 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:44:44,991 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:44:44,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:45,001 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:45,005 INFO L180 QuantifierPusher]: treesize reduction 97, result has 73.9 percent of original size [2021-11-12 22:44:45,006 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:44:45,007 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:44:45,007 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:379, output treesize:274 [2021-11-12 22:44:45,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:45,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:45,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:45,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:45,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:45,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:45,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:45,026 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:44:45,027 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:45,027 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:45,028 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:44:45,028 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:44:45,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:44:45,032 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:45,032 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:44:45,032 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:45,033 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:44:45,033 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:44:45,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:45,034 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:45,034 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:45,035 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:44:45,035 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:44:45,035 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:44:45,037 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:44:45,038 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:44:45,039 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:45,040 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-12 22:44:45,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:45,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:45,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:45,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:45,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:45,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:45,049 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:44:45,050 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:44:45,054 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:44:45,997 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:44:45,997 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:44:45,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68, 68] total 101 [2021-11-12 22:44:45,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230370053] [2021-11-12 22:44:45,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:44:45,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2021-11-12 22:44:45,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:44:45,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2021-11-12 22:44:45,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=10848, Unknown=0, NotChecked=0, Total=11130 [2021-11-12 22:44:45,999 INFO L87 Difference]: Start difference. First operand 132 states and 133 transitions. Second operand has 101 states, 101 states have (on average 2.267326732673267) internal successors, (229), 101 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:44:50,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:44:50,407 INFO L93 Difference]: Finished difference Result 139 states and 140 transitions. [2021-11-12 22:44:50,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-11-12 22:44:50,408 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.267326732673267) internal successors, (229), 101 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-12 22:44:50,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:44:50,408 INFO L225 Difference]: With dead ends: 139 [2021-11-12 22:44:50,408 INFO L226 Difference]: Without dead ends: 137 [2021-11-12 22:44:50,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 349 SyntacticMatches, 6 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2517 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=526, Invalid=19214, Unknown=0, NotChecked=0, Total=19740 [2021-11-12 22:44:50,409 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 42 mSDsluCounter, 2569 mSDsCounter, 0 mSdLazyCounter, 7965 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2470.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 2567 SdHoareTripleChecker+Invalid, 8097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.73ms SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 7965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2964.06ms IncrementalHoareTripleChecker+Time [2021-11-12 22:44:50,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 2567 Invalid, 8097 Unknown, 0 Unchecked, 10.73ms Time], IncrementalHoareTripleChecker [132 Valid, 7965 Invalid, 0 Unknown, 0 Unchecked, 2964.06ms Time] [2021-11-12 22:44:50,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-12 22:44:50,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 135. [2021-11-12 22:44:50,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.0149253731343284) internal successors, (136), 134 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:44:50,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2021-11-12 22:44:50,432 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 131 [2021-11-12 22:44:50,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:44:50,432 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2021-11-12 22:44:50,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 2.267326732673267) internal successors, (229), 101 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:44:50,432 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2021-11-12 22:44:50,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-12 22:44:50,433 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:44:50,433 INFO L514 BasicCegarLoop]: trace histogram [33, 32, 32, 32, 1, 1, 1, 1, 1] [2021-11-12 22:44:50,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2021-11-12 22:44:50,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1682 [2021-11-12 22:44:50,638 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:44:50,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:44:50,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1585113756, now seen corresponding path program 60 times [2021-11-12 22:44:50,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:44:50,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310647123] [2021-11-12 22:44:50,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:44:50,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:44:50,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:44:51,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 1458 proven. 622 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:44:51,973 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:44:51,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310647123] [2021-11-12 22:44:51,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310647123] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:44:51,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432565169] [2021-11-12 22:44:51,974 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-12 22:44:51,974 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:44:51,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:44:51,975 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:44:51,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-11-12 22:44:52,058 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-12 22:44:52,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:44:52,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 68 conjunts are in the unsatisfiable core [2021-11-12 22:44:52,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:44:53,965 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 1552 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:44:53,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:44:54,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 1552 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:44:54,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432565169] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:44:54,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [465475917] [2021-11-12 22:44:54,233 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:44:54,233 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:44:54,233 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:44:54,233 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:44:54,233 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:44:54,240 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:54,240 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:54,240 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:54,241 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:44:54,241 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:54,241 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:54,241 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:44:54,242 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:44:54,243 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_191|], 10=[|v_#valid_198|]} [2021-11-12 22:44:54,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:54,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:44:54,247 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:54,247 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:44:54,248 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:54,248 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:44:54,248 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:44:54,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:54,249 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:54,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:54,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:54,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:54,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:54,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:44:54,256 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:54,257 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:44:54,257 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:54,257 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:44:54,257 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:44:54,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:54,259 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:54,259 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:54,260 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:44:54,260 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:44:54,260 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:44:54,262 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:44:54,262 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:54,262 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:54,263 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:44:54,263 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:54,263 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:54,264 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:44:54,264 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:44:54,265 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_192|], 10=[|v_#valid_199|]} [2021-11-12 22:44:54,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:54,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:54,274 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:44:54,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:44:54,274 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:54,275 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:44:54,275 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:54,275 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:44:54,276 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:44:54,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:54,277 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:54,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:54,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:54,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:54,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:44:54,284 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:54,286 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:44:54,286 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:54,286 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:44:54,286 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:44:54,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:54,288 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:54,289 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:54,289 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:44:54,290 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:44:54,290 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:44:54,291 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:54,291 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:54,292 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:54,292 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:44:54,293 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-11-12 22:44:54,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:54,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:54,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:44:54,300 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:54,326 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:44:54,327 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:54,327 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:44:54,328 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:44:54,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:54,331 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:54,332 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:54,333 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-11-12 22:44:54,334 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:44:54,334 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:132, output treesize:128 [2021-11-12 22:44:54,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:54,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:54,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:54,364 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:54,369 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:54,371 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:54,371 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:54,372 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:54,372 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:44:54,373 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:54,373 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:54,374 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-12 22:44:54,376 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:44:54,376 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:54,378 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:54,380 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 253 [2021-11-12 22:44:54,383 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 314 [2021-11-12 22:44:54,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:54,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:54,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:54,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 56 [2021-11-12 22:44:54,402 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:54,403 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-12 22:44:54,403 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:54,403 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-12 22:44:54,403 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:44:54,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:54,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:44:54,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:44:54,413 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:54,414 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:44:54,414 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:54,415 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:44:54,415 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:44:54,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:54,425 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:54,428 INFO L180 QuantifierPusher]: treesize reduction 97, result has 74.3 percent of original size [2021-11-12 22:44:54,430 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 281 [2021-11-12 22:44:54,430 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:44:54,430 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:388, output treesize:281 [2021-11-12 22:44:54,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:54,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:54,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:54,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:54,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:54,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:54,447 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:44:54,448 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:44:54,448 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:54,448 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:44:54,449 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:44:54,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:44:54,453 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:54,453 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:44:54,453 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:54,453 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:44:54,454 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:44:54,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:54,455 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:54,455 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:54,455 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:44:54,456 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:44:54,456 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:44:54,458 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:44:54,459 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:44:54,460 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:54,461 INFO L185 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size 71 [2021-11-12 22:44:54,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:54,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:54,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:54,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:54,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:54,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:54,470 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:44:54,471 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-12 22:44:54,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:54,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:54,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:54,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:54,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:54,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:54,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:54,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:54,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:44:54,485 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:44:54,486 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:44:54,490 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:44:55,154 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:44:55,154 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:44:55,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68, 68] total 103 [2021-11-12 22:44:55,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533390675] [2021-11-12 22:44:55,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:44:55,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2021-11-12 22:44:55,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:44:55,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-11-12 22:44:55,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2432, Invalid=9124, Unknown=0, NotChecked=0, Total=11556 [2021-11-12 22:44:55,156 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand has 103 states, 103 states have (on average 2.3106796116504853) internal successors, (238), 103 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:44:55,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:44:55,982 INFO L93 Difference]: Finished difference Result 244 states and 246 transitions. [2021-11-12 22:44:55,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-11-12 22:44:55,983 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.3106796116504853) internal successors, (238), 103 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-11-12 22:44:55,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:44:55,984 INFO L225 Difference]: With dead ends: 244 [2021-11-12 22:44:55,984 INFO L226 Difference]: Without dead ends: 142 [2021-11-12 22:44:55,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5145 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=4144, Invalid=15316, Unknown=0, NotChecked=0, Total=19460 [2021-11-12 22:44:55,985 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 440 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 267.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.45ms SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 323.31ms IncrementalHoareTripleChecker+Time [2021-11-12 22:44:55,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [440 Valid, 329 Invalid, 961 Unknown, 0 Unchecked, 2.45ms Time], IncrementalHoareTripleChecker [286 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 323.31ms Time] [2021-11-12 22:44:55,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-11-12 22:44:56,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 136. [2021-11-12 22:44:56,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.0148148148148148) internal successors, (137), 135 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:44:56,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2021-11-12 22:44:56,007 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 134 [2021-11-12 22:44:56,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:44:56,007 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2021-11-12 22:44:56,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 2.3106796116504853) internal successors, (238), 103 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:44:56,008 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2021-11-12 22:44:56,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-12 22:44:56,008 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:44:56,008 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 1, 1, 1, 1, 1] [2021-11-12 22:44:56,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2021-11-12 22:44:56,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1706,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:44:56,209 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:44:56,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:44:56,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1065496958, now seen corresponding path program 61 times [2021-11-12 22:44:56,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:44:56,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896930334] [2021-11-12 22:44:56,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:44:56,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:44:56,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:44:58,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2113 backedges. 0 proven. 2113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:44:58,804 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:44:58,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896930334] [2021-11-12 22:44:58,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896930334] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:44:58,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787528675] [2021-11-12 22:44:58,805 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-12 22:44:58,805 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:44:58,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:44:58,805 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:44:58,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-11-12 22:44:58,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:44:58,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 138 conjunts are in the unsatisfiable core [2021-11-12 22:44:58,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:44:59,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-12 22:45:02,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 26 [2021-11-12 22:45:02,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2113 backedges. 0 proven. 2113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:45:02,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:45:02,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:45:02,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:45:02,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:45:02,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:45:03,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2113 backedges. 0 proven. 2113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:45:03,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787528675] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:45:03,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [960581657] [2021-11-12 22:45:03,118 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:45:03,118 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:45:03,118 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:45:03,118 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:45:03,118 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:45:03,120 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:03,120 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:45:03,120 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:03,120 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:45:03,121 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:45:03,121 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:03,121 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:45:03,122 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:45:03,123 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_194|], 10=[|v_#valid_201|]} [2021-11-12 22:45:03,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:03,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:45:03,127 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:03,127 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:45:03,127 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:03,128 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:45:03,128 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:45:03,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:03,129 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:03,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:03,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:03,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:03,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:03,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:45:03,135 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:03,136 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:45:03,136 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:03,136 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:45:03,137 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:45:03,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:03,138 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:03,138 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:03,139 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:45:03,139 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:45:03,139 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:45:03,141 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:45:03,141 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:45:03,141 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:03,142 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:45:03,142 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:45:03,142 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:03,143 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:45:03,143 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:45:03,144 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_195|], 10=[|v_#valid_202|]} [2021-11-12 22:45:03,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:03,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:03,153 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:45:03,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:45:03,153 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:03,154 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:45:03,154 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:03,154 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:45:03,154 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:45:03,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:03,156 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:03,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:03,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:03,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:03,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:45:03,164 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:03,165 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:45:03,165 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:03,165 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:45:03,165 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:45:03,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:03,167 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:03,168 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:03,168 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:45:03,169 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:45:03,169 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:45:03,170 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:03,171 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:45:03,171 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:03,171 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 22:45:03,172 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-12 22:45:03,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:03,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:03,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-12 22:45:03,179 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:03,180 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:45:03,180 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:03,181 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:45:03,181 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:45:03,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:03,183 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:03,184 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:03,185 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-12 22:45:03,185 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:45:03,185 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:123, output treesize:119 [2021-11-12 22:45:03,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:03,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:03,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:03,202 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:03,206 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:45:03,207 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:03,207 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:45:03,208 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:03,208 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:45:03,208 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:45:03,209 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:03,209 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-12 22:45:03,210 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 271 [2021-11-12 22:45:03,210 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:45:03,212 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:03,213 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 250 [2021-11-12 22:45:03,214 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 308 [2021-11-12 22:45:03,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:03,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:03,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:03,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2021-11-12 22:45:03,231 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:03,232 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:45:03,232 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:03,232 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:45:03,232 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:45:03,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:03,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:03,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:45:03,242 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:03,243 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:45:03,243 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:03,243 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:45:03,244 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:45:03,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:03,254 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:03,257 INFO L180 QuantifierPusher]: treesize reduction 97, result has 73.9 percent of original size [2021-11-12 22:45:03,259 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:45:03,259 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:45:03,259 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:379, output treesize:274 [2021-11-12 22:45:03,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:03,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:03,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:03,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:03,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:03,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:03,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:03,280 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:45:03,280 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:45:03,281 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:03,281 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:45:03,281 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:45:03,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:45:03,285 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:03,285 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:45:03,286 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:03,286 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:45:03,286 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:45:03,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:03,287 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:03,287 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:03,288 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:45:03,288 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:45:03,288 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:45:03,291 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:45:03,291 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:45:03,292 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:03,293 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-12 22:45:03,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:03,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:03,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:03,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:03,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:03,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:03,302 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:45:03,303 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:45:03,306 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:45:04,264 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:45:04,264 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:45:04,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70, 70] total 104 [2021-11-12 22:45:04,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439858678] [2021-11-12 22:45:04,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:45:04,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2021-11-12 22:45:04,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:45:04,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2021-11-12 22:45:04,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=11482, Unknown=0, NotChecked=0, Total=11772 [2021-11-12 22:45:04,266 INFO L87 Difference]: Start difference. First operand 136 states and 137 transitions. Second operand has 104 states, 104 states have (on average 2.269230769230769) internal successors, (236), 104 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:45:08,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:45:08,857 INFO L93 Difference]: Finished difference Result 143 states and 144 transitions. [2021-11-12 22:45:08,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-11-12 22:45:08,858 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 2.269230769230769) internal successors, (236), 104 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-11-12 22:45:08,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:45:08,859 INFO L225 Difference]: With dead ends: 143 [2021-11-12 22:45:08,859 INFO L226 Difference]: Without dead ends: 141 [2021-11-12 22:45:08,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 360 SyntacticMatches, 6 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2661 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=541, Invalid=20339, Unknown=0, NotChecked=0, Total=20880 [2021-11-12 22:45:08,860 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 43 mSDsluCounter, 2715 mSDsCounter, 0 mSdLazyCounter, 8274 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2563.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 2713 SdHoareTripleChecker+Invalid, 8410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.15ms SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 8274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3072.86ms IncrementalHoareTripleChecker+Time [2021-11-12 22:45:08,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 2713 Invalid, 8410 Unknown, 0 Unchecked, 11.15ms Time], IncrementalHoareTripleChecker [136 Valid, 8274 Invalid, 0 Unknown, 0 Unchecked, 3072.86ms Time] [2021-11-12 22:45:08,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-11-12 22:45:08,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 139. [2021-11-12 22:45:08,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.0144927536231885) internal successors, (140), 138 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:45:08,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 140 transitions. [2021-11-12 22:45:08,884 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 140 transitions. Word has length 135 [2021-11-12 22:45:08,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:45:08,884 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 140 transitions. [2021-11-12 22:45:08,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 2.269230769230769) internal successors, (236), 104 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:45:08,884 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 140 transitions. [2021-11-12 22:45:08,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-12 22:45:08,885 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:45:08,885 INFO L514 BasicCegarLoop]: trace histogram [34, 33, 33, 33, 1, 1, 1, 1, 1] [2021-11-12 22:45:08,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2021-11-12 22:45:09,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1738 [2021-11-12 22:45:09,087 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:45:09,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:45:09,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1888202427, now seen corresponding path program 62 times [2021-11-12 22:45:09,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:45:09,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981396092] [2021-11-12 22:45:09,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:45:09,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:45:09,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:45:10,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 1553 proven. 658 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:45:10,419 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:45:10,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981396092] [2021-11-12 22:45:10,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981396092] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:45:10,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037537158] [2021-11-12 22:45:10,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 22:45:10,420 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:45:10,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:45:10,420 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:45:10,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-11-12 22:45:39,787 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-11-12 22:45:39,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:45:39,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 70 conjunts are in the unsatisfiable core [2021-11-12 22:45:39,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:45:41,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 1650 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:45:41,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:45:42,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 1650 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:45:42,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037537158] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:45:42,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [572274761] [2021-11-12 22:45:42,055 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:45:42,055 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:45:42,055 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:45:42,055 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:45:42,055 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:45:42,056 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:42,057 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:45:42,057 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:42,057 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:45:42,057 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:45:42,058 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:42,058 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:45:42,059 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:45:42,059 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_197|], 10=[|v_#valid_204|]} [2021-11-12 22:45:42,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:42,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:45:42,064 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:42,064 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:45:42,064 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:42,064 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:45:42,064 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:45:42,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:42,066 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:42,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:42,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:42,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:42,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:42,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:45:42,072 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:42,073 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:45:42,073 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:42,073 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:45:42,073 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:45:42,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:42,075 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:42,075 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:42,076 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:45:42,076 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:45:42,076 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:45:42,078 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:45:42,078 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:45:42,078 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:42,079 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:45:42,079 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:45:42,079 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:42,079 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:45:42,080 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:45:42,081 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_198|], 10=[|v_#valid_205|]} [2021-11-12 22:45:42,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:42,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:42,090 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:45:42,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:45:42,090 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:42,091 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:45:42,091 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:42,092 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:45:42,092 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:45:42,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:42,094 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:42,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:42,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:42,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:42,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:45:42,101 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:42,102 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:45:42,102 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:42,103 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:45:42,103 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:45:42,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:42,105 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:42,105 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:42,106 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:45:42,106 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:45:42,106 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:45:42,107 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:42,108 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:45:42,108 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:42,109 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:45:42,109 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-11-12 22:45:42,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:42,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:42,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:45:42,117 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:42,117 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:45:42,118 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:42,118 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:45:42,118 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:45:42,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:42,120 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:42,121 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:42,121 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-11-12 22:45:42,122 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:45:42,122 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:125, output treesize:121 [2021-11-12 22:45:42,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:42,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:42,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:42,150 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:42,153 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:45:42,154 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:42,154 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:45:42,155 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:42,155 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-12 22:45:42,155 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:45:42,155 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:42,156 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:45:42,157 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 275 [2021-11-12 22:45:42,157 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:45:42,158 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:42,160 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 254 [2021-11-12 22:45:42,161 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 312 [2021-11-12 22:45:42,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:42,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:42,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:42,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 56 [2021-11-12 22:45:42,177 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:42,178 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-12 22:45:42,179 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:42,179 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-12 22:45:42,179 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:45:42,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:42,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:42,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:45:42,188 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:42,189 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:45:42,189 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:42,190 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:45:42,190 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:45:42,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:42,200 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:42,203 INFO L180 QuantifierPusher]: treesize reduction 94, result has 74.9 percent of original size [2021-11-12 22:45:42,205 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 281 [2021-11-12 22:45:42,205 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:45:42,205 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:383, output treesize:281 [2021-11-12 22:45:42,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:42,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:42,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:42,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:42,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:42,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:42,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:42,224 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:45:42,225 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:45:42,225 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:42,226 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:45:42,226 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:45:42,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:45:42,230 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:42,230 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:45:42,231 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:42,231 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:45:42,231 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:45:42,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:42,232 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:42,232 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:42,233 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:45:42,233 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:45:42,233 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:45:42,236 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:45:42,236 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:45:42,238 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:42,239 INFO L185 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size 71 [2021-11-12 22:45:42,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:42,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:42,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:42,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:42,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:42,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:42,248 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:42,249 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-12 22:45:42,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:42,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:42,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:42,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:42,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:42,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:42,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:42,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:42,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:42,263 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:45:42,264 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:45:42,268 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:45:42,930 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:45:42,930 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:45:42,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70, 70] total 106 [2021-11-12 22:45:42,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234633482] [2021-11-12 22:45:42,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:45:42,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2021-11-12 22:45:42,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:45:42,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2021-11-12 22:45:42,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2573, Invalid=9637, Unknown=0, NotChecked=0, Total=12210 [2021-11-12 22:45:42,933 INFO L87 Difference]: Start difference. First operand 139 states and 140 transitions. Second operand has 106 states, 106 states have (on average 2.311320754716981) internal successors, (245), 106 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:45:43,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:45:43,791 INFO L93 Difference]: Finished difference Result 251 states and 253 transitions. [2021-11-12 22:45:43,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-11-12 22:45:43,792 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 2.311320754716981) internal successors, (245), 106 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-11-12 22:45:43,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:45:43,793 INFO L225 Difference]: With dead ends: 251 [2021-11-12 22:45:43,793 INFO L226 Difference]: Without dead ends: 146 [2021-11-12 22:45:43,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 373 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5437 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=4388, Invalid=16204, Unknown=0, NotChecked=0, Total=20592 [2021-11-12 22:45:43,794 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 436 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 280.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.49ms SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 337.64ms IncrementalHoareTripleChecker+Time [2021-11-12 22:45:43,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 331 Invalid, 965 Unknown, 0 Unchecked, 2.49ms Time], IncrementalHoareTripleChecker [290 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 337.64ms Time] [2021-11-12 22:45:43,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-11-12 22:45:43,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 140. [2021-11-12 22:45:43,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.014388489208633) internal successors, (141), 139 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:45:43,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 141 transitions. [2021-11-12 22:45:43,818 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 141 transitions. Word has length 138 [2021-11-12 22:45:43,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:45:43,819 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 141 transitions. [2021-11-12 22:45:43,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 2.311320754716981) internal successors, (245), 106 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:45:43,819 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 141 transitions. [2021-11-12 22:45:43,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-12 22:45:43,820 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:45:43,820 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 1, 1, 1, 1, 1] [2021-11-12 22:45:43,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2021-11-12 22:45:44,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1762,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:45:44,020 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:45:44,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:45:44,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1928450143, now seen corresponding path program 63 times [2021-11-12 22:45:44,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:45:44,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476698697] [2021-11-12 22:45:44,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:45:44,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:45:44,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:45:46,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2245 backedges. 0 proven. 2245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:45:46,664 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:45:46,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476698697] [2021-11-12 22:45:46,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476698697] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:45:46,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885887383] [2021-11-12 22:45:46,665 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-12 22:45:46,665 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:45:46,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:45:46,667 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:45:46,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-11-12 22:45:46,941 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-12 22:45:46,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:45:46,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 142 conjunts are in the unsatisfiable core [2021-11-12 22:45:46,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:45:47,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-12 22:45:50,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 26 [2021-11-12 22:45:50,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2245 backedges. 0 proven. 2245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:45:50,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:45:51,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:45:51,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:45:51,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:45:51,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:45:51,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2245 backedges. 0 proven. 2245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:45:51,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885887383] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:45:51,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1628019753] [2021-11-12 22:45:51,237 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:45:51,237 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:45:51,238 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:45:51,238 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:45:51,238 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:45:51,239 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:51,240 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:45:51,240 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:51,240 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:45:51,240 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:45:51,241 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:51,241 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:45:51,241 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:45:51,242 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_200|], 10=[|v_#valid_207|]} [2021-11-12 22:45:51,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:51,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:45:51,247 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:51,247 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:45:51,247 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:51,247 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:45:51,247 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:45:51,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:51,249 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:51,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:51,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:51,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:51,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:51,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:45:51,255 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:51,256 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:45:51,257 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:51,257 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:45:51,257 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:45:51,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:51,258 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:51,259 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:51,259 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:45:51,259 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:45:51,260 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:45:51,261 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:45:51,262 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:45:51,262 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:51,262 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:45:51,263 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:45:51,263 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:51,263 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:45:51,264 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:45:51,265 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_201|], 10=[|v_#valid_208|]} [2021-11-12 22:45:51,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:51,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:51,273 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:45:51,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:45:51,274 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:51,275 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:45:51,275 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:51,275 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:45:51,275 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:45:51,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:51,289 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:51,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:51,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:51,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:51,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:45:51,296 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:51,297 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:45:51,298 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:51,298 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:45:51,298 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:45:51,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:51,300 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:51,300 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:51,301 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:45:51,301 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:45:51,301 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:45:51,302 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:51,303 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:45:51,304 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:51,304 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 22:45:51,305 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-11-12 22:45:51,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:51,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:51,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-12 22:45:51,311 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:51,312 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:45:51,312 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:51,313 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:45:51,313 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:45:51,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:51,315 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:51,315 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:51,316 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 112 [2021-11-12 22:45:51,316 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:45:51,316 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:116, output treesize:112 [2021-11-12 22:45:51,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:51,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:51,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:51,334 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:51,337 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:45:51,338 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:51,338 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:45:51,339 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:51,339 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:45:51,339 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:45:51,340 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:51,340 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-12 22:45:51,341 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 266 [2021-11-12 22:45:51,342 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:45:51,343 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:51,344 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 245 [2021-11-12 22:45:51,345 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 303 [2021-11-12 22:45:51,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:51,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:51,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:51,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2021-11-12 22:45:51,363 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:51,364 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:45:51,364 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:51,364 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:45:51,364 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:45:51,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:51,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:45:51,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:45:51,374 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:51,375 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:45:51,376 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:51,376 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:45:51,376 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:45:51,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:51,386 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:51,390 INFO L180 QuantifierPusher]: treesize reduction 92, result has 74.9 percent of original size [2021-11-12 22:45:51,391 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:45:51,392 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:45:51,392 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:374, output treesize:274 [2021-11-12 22:45:51,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:51,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:51,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:51,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:51,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:51,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:51,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:51,411 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:45:51,411 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:45:51,412 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:51,412 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:45:51,412 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:45:51,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:45:51,416 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:51,416 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:45:51,417 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:51,417 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:45:51,417 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:45:51,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:51,418 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:51,418 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:51,419 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:45:51,419 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:45:51,419 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:45:51,422 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:45:51,423 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:45:51,424 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:45:51,425 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-12 22:45:51,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:51,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:51,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:51,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:51,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:51,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:45:51,438 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:45:51,439 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:45:51,446 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:45:52,411 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:45:52,411 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:45:52,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72, 72] total 107 [2021-11-12 22:45:52,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211934530] [2021-11-12 22:45:52,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:45:52,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2021-11-12 22:45:52,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:45:52,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2021-11-12 22:45:52,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=12134, Unknown=0, NotChecked=0, Total=12432 [2021-11-12 22:45:52,413 INFO L87 Difference]: Start difference. First operand 140 states and 141 transitions. Second operand has 107 states, 107 states have (on average 2.2710280373831777) internal successors, (243), 107 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:45:57,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:45:57,575 INFO L93 Difference]: Finished difference Result 147 states and 148 transitions. [2021-11-12 22:45:57,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-11-12 22:45:57,575 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 2.2710280373831777) internal successors, (243), 107 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-11-12 22:45:57,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:45:57,576 INFO L225 Difference]: With dead ends: 147 [2021-11-12 22:45:57,576 INFO L226 Difference]: Without dead ends: 145 [2021-11-12 22:45:57,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 371 SyntacticMatches, 6 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2809 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=556, Invalid=21496, Unknown=0, NotChecked=0, Total=22052 [2021-11-12 22:45:57,577 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 43 mSDsluCounter, 3032 mSDsCounter, 0 mSdLazyCounter, 9534 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2967.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 3032 SdHoareTripleChecker+Invalid, 9673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.45ms SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 9534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3547.90ms IncrementalHoareTripleChecker+Time [2021-11-12 22:45:57,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 3032 Invalid, 9673 Unknown, 0 Unchecked, 12.45ms Time], IncrementalHoareTripleChecker [139 Valid, 9534 Invalid, 0 Unknown, 0 Unchecked, 3547.90ms Time] [2021-11-12 22:45:57,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-12 22:45:57,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2021-11-12 22:45:57,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.0140845070422535) internal successors, (144), 142 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:45:57,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2021-11-12 22:45:57,601 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 139 [2021-11-12 22:45:57,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:45:57,602 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions. [2021-11-12 22:45:57,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 2.2710280373831777) internal successors, (243), 107 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:45:57,602 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions. [2021-11-12 22:45:57,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-12 22:45:57,603 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:45:57,603 INFO L514 BasicCegarLoop]: trace histogram [35, 34, 34, 34, 1, 1, 1, 1, 1] [2021-11-12 22:45:57,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2021-11-12 22:45:57,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1795 [2021-11-12 22:45:57,806 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:45:57,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:45:57,806 INFO L85 PathProgramCache]: Analyzing trace with hash -970865348, now seen corresponding path program 64 times [2021-11-12 22:45:57,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:45:57,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911650244] [2021-11-12 22:45:57,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:45:57,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:45:57,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:45:59,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 1651 proven. 695 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:45:59,328 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:45:59,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911650244] [2021-11-12 22:45:59,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911650244] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:45:59,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938309339] [2021-11-12 22:45:59,329 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-12 22:45:59,329 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:45:59,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:45:59,330 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:45:59,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-11-12 22:45:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:45:59,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 72 conjunts are in the unsatisfiable core [2021-11-12 22:45:59,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:46:01,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 1751 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:46:01,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:46:01,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 1751 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:46:01,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938309339] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:46:01,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [606498367] [2021-11-12 22:46:01,743 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:46:01,743 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:46:01,743 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:46:01,744 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:46:01,744 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:46:01,746 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:01,747 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:46:01,747 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:01,747 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:46:01,747 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:46:01,748 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:01,748 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:46:01,749 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:46:01,750 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_203|], 10=[|v_#valid_210|]} [2021-11-12 22:46:01,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:46:01,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:46:01,754 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:01,754 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:46:01,755 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:01,755 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:46:01,755 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:46:01,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:46:01,756 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:01,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:46:01,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:46:01,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:46:01,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:46:01,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:46:01,764 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:01,765 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:46:01,765 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:01,766 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:46:01,766 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:46:01,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:46:01,767 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:01,768 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:01,768 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:46:01,768 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:46:01,768 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:46:01,770 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:46:01,771 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:46:01,771 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:01,771 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:46:01,771 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:46:01,772 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:01,772 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:46:01,773 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:46:01,774 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_204|], 10=[|v_#valid_211|]} [2021-11-12 22:46:01,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:46:01,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:46:01,783 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:46:01,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:46:01,783 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:01,784 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:46:01,784 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:01,784 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:46:01,785 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:46:01,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:46:01,787 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:01,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:46:01,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:46:01,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:46:01,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:46:01,794 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:01,795 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:46:01,796 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:01,796 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:46:01,796 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:46:01,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:46:01,798 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:01,798 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:01,799 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:46:01,799 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:46:01,799 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:46:01,806 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:01,806 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:46:01,807 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:01,807 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-12 22:46:01,808 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-11-12 22:46:01,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:46:01,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:46:01,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-12 22:46:01,815 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:01,816 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:46:01,816 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:01,816 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-12 22:46:01,817 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:46:01,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:46:01,819 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:01,819 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:01,820 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-11-12 22:46:01,820 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:46:01,820 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:123, output treesize:119 [2021-11-12 22:46:01,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:46:01,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:46:01,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:46:01,838 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:01,841 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:46:01,843 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:01,843 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:46:01,843 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:01,844 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:46:01,844 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:46:01,844 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:01,845 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-12 22:46:01,846 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 271 [2021-11-12 22:46:01,846 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:46:01,847 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:01,849 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 250 [2021-11-12 22:46:01,850 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 308 [2021-11-12 22:46:01,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:46:01,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:46:01,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:46:01,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2021-11-12 22:46:01,881 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:01,882 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:46:01,882 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:01,883 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-12 22:46:01,883 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:46:01,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:46:01,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:46:01,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:46:01,892 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:01,893 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:46:01,893 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:01,894 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:46:01,894 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:46:01,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:46:01,904 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:01,908 INFO L180 QuantifierPusher]: treesize reduction 97, result has 73.9 percent of original size [2021-11-12 22:46:01,909 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:46:01,909 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:46:01,910 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:379, output treesize:274 [2021-11-12 22:46:01,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:46:01,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:46:01,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:46:01,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:46:01,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:46:01,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:46:01,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:46:01,929 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:46:01,929 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:46:01,930 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:01,930 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:46:01,931 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:46:01,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:46:01,934 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:01,935 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:46:01,935 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:01,935 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:46:01,935 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:46:01,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:46:01,936 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:01,937 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:01,937 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:46:01,937 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:46:01,937 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:46:01,940 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:46:01,941 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:46:01,942 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:01,943 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-12 22:46:01,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:46:01,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:46:01,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:46:01,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:46:01,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:46:01,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:46:01,951 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:46:01,952 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:46:01,955 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:46:02,628 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:46:02,628 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:46:02,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72, 72] total 109 [2021-11-12 22:46:02,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823705964] [2021-11-12 22:46:02,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:46:02,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2021-11-12 22:46:02,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:46:02,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2021-11-12 22:46:02,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2718, Invalid=10164, Unknown=0, NotChecked=0, Total=12882 [2021-11-12 22:46:02,630 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand has 109 states, 109 states have (on average 2.311926605504587) internal successors, (252), 109 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:46:03,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:46:03,581 INFO L93 Difference]: Finished difference Result 258 states and 260 transitions. [2021-11-12 22:46:03,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-11-12 22:46:03,581 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 2.311926605504587) internal successors, (252), 109 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2021-11-12 22:46:03,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:46:03,582 INFO L225 Difference]: With dead ends: 258 [2021-11-12 22:46:03,582 INFO L226 Difference]: Without dead ends: 150 [2021-11-12 22:46:03,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5737 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=4639, Invalid=17117, Unknown=0, NotChecked=0, Total=21756 [2021-11-12 22:46:03,584 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 520 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 307.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.93ms SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 379.30ms IncrementalHoareTripleChecker+Time [2021-11-12 22:46:03,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [520 Valid, 360 Invalid, 1075 Unknown, 0 Unchecked, 2.93ms Time], IncrementalHoareTripleChecker [333 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 379.30ms Time] [2021-11-12 22:46:03,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-11-12 22:46:03,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 144. [2021-11-12 22:46:03,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.013986013986014) internal successors, (145), 143 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:46:03,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 145 transitions. [2021-11-12 22:46:03,609 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 145 transitions. Word has length 142 [2021-11-12 22:46:03,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:46:03,610 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 145 transitions. [2021-11-12 22:46:03,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 109 states have (on average 2.311926605504587) internal successors, (252), 109 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:46:03,610 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 145 transitions. [2021-11-12 22:46:03,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-12 22:46:03,610 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:46:03,611 INFO L514 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 1, 1, 1, 1, 1] [2021-11-12 22:46:03,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2021-11-12 22:46:03,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1819 [2021-11-12 22:46:03,811 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:46:03,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:46:03,811 INFO L85 PathProgramCache]: Analyzing trace with hash -368221406, now seen corresponding path program 65 times [2021-11-12 22:46:03,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:46:03,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784699678] [2021-11-12 22:46:03,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:46:03,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:46:04,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:46:06,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2381 backedges. 0 proven. 2381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:46:06,712 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:46:06,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784699678] [2021-11-12 22:46:06,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784699678] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:46:06,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319230037] [2021-11-12 22:46:06,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 22:46:06,712 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:46:06,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:46:06,713 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:46:06,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-11-12 22:46:41,589 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 35 check-sat command(s) [2021-11-12 22:46:41,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:46:41,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 149 conjunts are in the unsatisfiable core [2021-11-12 22:46:41,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:46:44,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-12 22:46:48,399 INFO L354 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2021-11-12 22:46:48,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 32 [2021-11-12 22:46:48,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2381 backedges. 1717 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:46:48,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:46:54,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2021-11-12 22:46:54,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 40 [2021-11-12 22:46:59,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2381 backedges. 1683 proven. 698 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:46:59,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319230037] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:46:59,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1553858122] [2021-11-12 22:46:59,879 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:46:59,879 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:46:59,879 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:46:59,879 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:46:59,879 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:46:59,881 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:59,881 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:46:59,881 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:59,881 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:46:59,882 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:46:59,882 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:59,882 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:46:59,883 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:46:59,884 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_206|], 10=[|v_#valid_213|]} [2021-11-12 22:46:59,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:46:59,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:46:59,888 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:59,888 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:46:59,888 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:59,889 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:46:59,889 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:46:59,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:46:59,890 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:59,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:46:59,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:46:59,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:46:59,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:46:59,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:46:59,896 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:59,897 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:46:59,897 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:59,897 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:46:59,898 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:46:59,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:46:59,899 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:59,899 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:59,900 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:46:59,900 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:46:59,900 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:46:59,902 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:46:59,902 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:46:59,902 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:59,903 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:46:59,903 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:46:59,903 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:59,904 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:46:59,904 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:46:59,905 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_207|], 10=[|v_#valid_214|]} [2021-11-12 22:46:59,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:46:59,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:46:59,913 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:46:59,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:46:59,914 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:59,915 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:46:59,915 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:59,915 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:46:59,915 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:46:59,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:46:59,917 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:59,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:46:59,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:46:59,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:46:59,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:46:59,924 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:59,925 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:46:59,926 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:59,926 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:46:59,926 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:46:59,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:46:59,928 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:59,928 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:59,929 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:46:59,929 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:46:59,929 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:46:59,930 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:59,931 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:46:59,931 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:59,932 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:46:59,933 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-11-12 22:46:59,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:46:59,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:46:59,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:46:59,939 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:59,940 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:46:59,940 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:59,941 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:46:59,941 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:46:59,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:46:59,943 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:59,943 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:59,944 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-11-12 22:46:59,944 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:46:59,944 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:132, output treesize:128 [2021-11-12 22:46:59,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:46:59,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:46:59,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:46:59,964 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:59,967 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:46:59,968 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:59,969 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:46:59,969 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:59,969 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:46:59,970 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:46:59,970 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:59,970 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-12 22:46:59,972 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:46:59,972 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:46:59,973 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:59,974 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 253 [2021-11-12 22:46:59,975 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 314 [2021-11-12 22:46:59,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:46:59,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:46:59,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:46:59,988 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:59,989 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:46:59,989 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:46:59,990 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:46:59,990 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:46:59,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:46:59,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:46:59,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:47:00,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 56 [2021-11-12 22:47:00,001 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:00,002 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-12 22:47:00,003 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:00,003 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-12 22:47:00,003 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:47:00,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:00,013 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:00,017 INFO L180 QuantifierPusher]: treesize reduction 97, result has 74.3 percent of original size [2021-11-12 22:47:00,018 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 281 [2021-11-12 22:47:00,019 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:47:00,019 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:388, output treesize:281 [2021-11-12 22:47:00,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:00,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:00,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:00,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:00,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:00,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:00,036 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:47:00,037 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:47:00,037 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:00,037 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:47:00,038 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:47:00,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:47:00,042 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:00,042 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:47:00,042 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:00,043 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:47:00,043 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:47:00,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:00,044 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:00,044 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:00,045 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:47:00,045 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:47:00,045 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:47:00,047 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:47:00,067 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:47:00,068 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:00,069 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-12 22:47:00,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:00,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:00,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:00,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:00,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:00,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:00,077 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:47:00,078 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:47:00,082 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:47:01,351 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:47:01,351 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:47:01,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74, 74] total 217 [2021-11-12 22:47:01,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303171893] [2021-11-12 22:47:01,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:47:01,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 217 states [2021-11-12 22:47:01,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:47:01,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 217 interpolants. [2021-11-12 22:47:01,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3642, Invalid=45420, Unknown=0, NotChecked=0, Total=49062 [2021-11-12 22:47:01,355 INFO L87 Difference]: Start difference. First operand 144 states and 145 transitions. Second operand has 217 states, 217 states have (on average 1.9539170506912442) internal successors, (424), 217 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:47:16,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:47:16,143 INFO L93 Difference]: Finished difference Result 258 states and 261 transitions. [2021-11-12 22:47:16,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2021-11-12 22:47:16,144 INFO L78 Accepts]: Start accepts. Automaton has has 217 states, 217 states have (on average 1.9539170506912442) internal successors, (424), 217 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2021-11-12 22:47:16,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:47:16,145 INFO L225 Difference]: With dead ends: 258 [2021-11-12 22:47:16,145 INFO L226 Difference]: Without dead ends: 150 [2021-11-12 22:47:16,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 291 SyntacticMatches, 16 SemanticMatches, 353 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32700 ImplicationChecksByTransitivity, 30.1s TimeCoverageRelationStatistics Valid=8871, Invalid=116799, Unknown=0, NotChecked=0, Total=125670 [2021-11-12 22:47:16,149 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 234 mSDsluCounter, 3137 mSDsCounter, 0 mSdLazyCounter, 9138 mSolverCounterSat, 483 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3273.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 3173 SdHoareTripleChecker+Invalid, 10095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.07ms SdHoareTripleChecker+Time, 483 IncrementalHoareTripleChecker+Valid, 9138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 474 IncrementalHoareTripleChecker+Unchecked, 3902.71ms IncrementalHoareTripleChecker+Time [2021-11-12 22:47:16,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 3173 Invalid, 10095 Unknown, 0 Unchecked, 16.07ms Time], IncrementalHoareTripleChecker [483 Valid, 9138 Invalid, 0 Unknown, 474 Unchecked, 3902.71ms Time] [2021-11-12 22:47:16,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-11-12 22:47:16,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 148. [2021-11-12 22:47:16,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.0136054421768708) internal successors, (149), 147 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:47:16,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 149 transitions. [2021-11-12 22:47:16,192 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 149 transitions. Word has length 143 [2021-11-12 22:47:16,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:47:16,192 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 149 transitions. [2021-11-12 22:47:16,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 217 states, 217 states have (on average 1.9539170506912442) internal successors, (424), 217 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:47:16,193 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 149 transitions. [2021-11-12 22:47:16,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-12 22:47:16,193 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:47:16,194 INFO L514 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 1, 1, 1, 1, 1] [2021-11-12 22:47:16,239 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2021-11-12 22:47:16,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1843,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:47:16,418 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:47:16,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:47:16,418 INFO L85 PathProgramCache]: Analyzing trace with hash -743796479, now seen corresponding path program 66 times [2021-11-12 22:47:16,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:47:16,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539875954] [2021-11-12 22:47:16,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:47:16,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:47:16,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:47:19,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 0 proven. 2521 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:47:19,830 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:47:19,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539875954] [2021-11-12 22:47:19,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539875954] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:47:19,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499140115] [2021-11-12 22:47:19,830 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-12 22:47:19,830 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:47:19,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:47:19,831 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:47:19,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2021-11-12 22:47:20,086 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-12 22:47:20,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:47:20,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 150 conjunts are in the unsatisfiable core [2021-11-12 22:47:20,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:47:20,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-12 22:47:23,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 26 [2021-11-12 22:47:23,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 0 proven. 2521 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:47:23,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:47:24,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:47:24,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:47:24,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:47:24,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:47:24,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 0 proven. 2521 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:47:24,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499140115] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:47:24,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [282892959] [2021-11-12 22:47:24,827 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:47:24,827 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:47:24,828 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:47:24,828 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:47:24,828 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:47:24,830 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:24,830 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:47:24,837 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:24,838 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:47:24,838 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:47:24,838 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:24,839 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:47:24,840 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:47:24,841 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_209|], 10=[|v_#valid_216|]} [2021-11-12 22:47:24,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:47:24,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:47:24,846 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:24,847 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:47:24,847 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:24,848 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:47:24,848 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:47:24,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:24,850 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:24,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:47:24,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:47:24,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:47:24,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:47:24,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:47:24,856 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:24,857 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:47:24,857 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:24,858 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:47:24,858 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:47:24,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:24,859 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:24,859 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:24,860 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:47:24,860 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:47:24,860 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:47:24,862 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:47:24,862 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:47:24,863 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:24,863 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:47:24,863 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:47:24,864 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:24,864 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:47:24,865 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:47:24,866 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_210|], 10=[|v_#valid_217|]} [2021-11-12 22:47:24,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:47:24,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:47:24,874 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:47:24,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:47:24,875 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:24,901 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:47:24,901 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:24,901 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:47:24,902 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:47:24,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:24,903 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:24,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:47:24,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:47:24,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:47:24,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:47:24,911 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:24,912 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:47:24,912 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:24,912 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:47:24,913 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:47:24,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:24,914 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:24,915 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:24,916 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:47:24,916 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:47:24,916 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:47:24,917 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:24,918 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:47:24,918 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:24,919 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:47:24,919 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-11-12 22:47:24,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:47:24,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:47:24,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:47:24,926 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:24,927 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:47:24,927 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:24,928 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:47:24,928 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:47:24,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:24,930 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:24,930 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:24,931 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-11-12 22:47:24,931 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:47:24,931 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:125, output treesize:121 [2021-11-12 22:47:24,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:24,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:24,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:24,949 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:24,952 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:47:24,953 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:24,953 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:47:24,954 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:24,954 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-12 22:47:24,954 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:47:24,955 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:24,955 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:47:24,956 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 275 [2021-11-12 22:47:24,957 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:47:24,958 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:24,959 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 254 [2021-11-12 22:47:24,960 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 312 [2021-11-12 22:47:24,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:47:24,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:47:24,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:47:24,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 56 [2021-11-12 22:47:24,977 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:24,978 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-12 22:47:24,978 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:24,978 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-12 22:47:24,978 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:47:24,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:47:24,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:47:24,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:47:24,993 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:24,994 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:47:24,994 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:24,995 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:47:24,995 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:47:24,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:25,005 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:25,009 INFO L180 QuantifierPusher]: treesize reduction 92, result has 75.3 percent of original size [2021-11-12 22:47:25,010 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 281 [2021-11-12 22:47:25,011 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:47:25,011 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:383, output treesize:281 [2021-11-12 22:47:25,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:25,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:25,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:25,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:25,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:25,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:25,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:25,030 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:47:25,030 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:47:25,031 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:25,031 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:47:25,031 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:47:25,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:47:25,035 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:25,035 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:47:25,036 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:25,036 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:47:25,036 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:47:25,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:25,037 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:25,037 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:25,038 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:47:25,038 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:47:25,038 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:47:25,040 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:47:25,041 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:47:25,043 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:25,044 INFO L185 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size 71 [2021-11-12 22:47:25,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:25,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:25,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:25,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:25,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:25,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:25,053 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:25,055 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-12 22:47:25,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:25,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:25,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:25,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:25,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:25,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:25,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:25,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:25,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:25,069 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:47:25,070 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:47:25,074 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:47:26,086 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:47:26,086 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:47:26,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76, 76] total 113 [2021-11-12 22:47:26,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363761327] [2021-11-12 22:47:26,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:47:26,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2021-11-12 22:47:26,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:47:26,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2021-11-12 22:47:26,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=13492, Unknown=0, NotChecked=0, Total=13806 [2021-11-12 22:47:26,088 INFO L87 Difference]: Start difference. First operand 148 states and 149 transitions. Second operand has 113 states, 113 states have (on average 2.274336283185841) internal successors, (257), 113 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:47:31,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:47:31,824 INFO L93 Difference]: Finished difference Result 155 states and 156 transitions. [2021-11-12 22:47:31,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-11-12 22:47:31,824 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 2.274336283185841) internal successors, (257), 113 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2021-11-12 22:47:31,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:47:31,825 INFO L225 Difference]: With dead ends: 155 [2021-11-12 22:47:31,825 INFO L226 Difference]: Without dead ends: 153 [2021-11-12 22:47:31,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 393 SyntacticMatches, 6 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3117 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=586, Invalid=23906, Unknown=0, NotChecked=0, Total=24492 [2021-11-12 22:47:31,828 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 45 mSDsluCounter, 3285 mSDsCounter, 0 mSdLazyCounter, 10338 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3292.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3283 SdHoareTripleChecker+Invalid, 10485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.65ms SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 10338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3953.32ms IncrementalHoareTripleChecker+Time [2021-11-12 22:47:31,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 3283 Invalid, 10485 Unknown, 0 Unchecked, 14.65ms Time], IncrementalHoareTripleChecker [147 Valid, 10338 Invalid, 0 Unknown, 0 Unchecked, 3953.32ms Time] [2021-11-12 22:47:31,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-11-12 22:47:31,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 151. [2021-11-12 22:47:31,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.0133333333333334) internal successors, (152), 150 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:47:31,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2021-11-12 22:47:31,906 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 147 [2021-11-12 22:47:31,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:47:31,907 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2021-11-12 22:47:31,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 2.274336283185841) internal successors, (257), 113 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:47:31,907 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2021-11-12 22:47:31,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-12 22:47:31,908 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:47:31,908 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 1, 1, 1, 1, 1] [2021-11-12 22:47:31,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2021-11-12 22:47:32,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1866 [2021-11-12 22:47:32,122 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:47:32,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:47:32,122 INFO L85 PathProgramCache]: Analyzing trace with hash -699832356, now seen corresponding path program 67 times [2021-11-12 22:47:32,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:47:32,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085261443] [2021-11-12 22:47:32,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:47:32,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:47:32,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:47:33,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 1856 proven. 772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:47:33,673 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:47:33,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085261443] [2021-11-12 22:47:33,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085261443] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:47:33,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156761721] [2021-11-12 22:47:33,673 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-12 22:47:33,673 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:47:33,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:47:33,674 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:47:33,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2021-11-12 22:47:33,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:47:33,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 76 conjunts are in the unsatisfiable core [2021-11-12 22:47:33,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:47:36,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 1962 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:47:36,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:47:36,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 1962 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:47:36,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156761721] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:47:36,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [182052357] [2021-11-12 22:47:36,467 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:47:36,468 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:47:36,468 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:47:36,468 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:47:36,468 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:47:36,483 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:36,484 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:47:36,484 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:36,484 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:47:36,485 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:47:36,485 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:36,485 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:47:36,486 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:47:36,487 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_212|], 10=[|v_#valid_219|]} [2021-11-12 22:47:36,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:47:36,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:47:36,491 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:36,491 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:47:36,492 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:36,492 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:47:36,492 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:47:36,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:36,493 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:36,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:47:36,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:47:36,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:47:36,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:47:36,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:47:36,499 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:36,500 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:47:36,501 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:36,501 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:47:36,501 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:47:36,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:36,502 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:36,503 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:36,503 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:47:36,503 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:47:36,504 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:47:36,505 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:47:36,506 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:47:36,506 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:36,506 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:47:36,507 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:47:36,507 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:36,507 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:47:36,508 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:47:36,509 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_213|], 10=[|v_#valid_220|]} [2021-11-12 22:47:36,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:47:36,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:47:36,517 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:47:36,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:47:36,518 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:36,518 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:47:36,519 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:36,519 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:47:36,519 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:47:36,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:36,521 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:36,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:47:36,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:47:36,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:47:36,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:47:36,528 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:36,529 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:47:36,530 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:36,530 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:47:36,530 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:47:36,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:36,532 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:36,533 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:36,533 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:47:36,533 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:47:36,534 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:47:36,535 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:36,535 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:47:36,536 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:36,536 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:47:36,537 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-11-12 22:47:36,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:47:36,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:47:36,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:47:36,544 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:36,545 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:47:36,545 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:36,545 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:47:36,545 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:47:36,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:36,547 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:36,548 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:36,549 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-11-12 22:47:36,549 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:47:36,549 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:132, output treesize:128 [2021-11-12 22:47:36,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:36,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:36,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:36,569 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:36,572 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:47:36,573 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:36,574 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:47:36,574 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:36,574 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-12 22:47:36,575 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:47:36,575 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:36,575 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:47:36,576 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:47:36,577 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:47:36,578 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:36,579 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 253 [2021-11-12 22:47:36,580 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 314 [2021-11-12 22:47:36,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:47:36,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:47:36,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:47:36,593 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:36,594 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:47:36,595 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:36,595 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:47:36,595 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:47:36,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:47:36,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:47:36,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:47:36,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 56 [2021-11-12 22:47:36,606 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:36,607 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-12 22:47:36,607 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:36,608 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-12 22:47:36,608 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:47:36,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:36,618 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:36,622 INFO L180 QuantifierPusher]: treesize reduction 99, result has 73.9 percent of original size [2021-11-12 22:47:36,623 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 281 [2021-11-12 22:47:36,624 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:47:36,624 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:388, output treesize:281 [2021-11-12 22:47:36,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:36,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:36,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:36,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:36,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:36,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:36,642 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:47:36,643 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:47:36,643 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:36,644 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:47:36,644 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:47:36,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:47:36,648 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:36,648 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:47:36,648 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:36,649 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:47:36,649 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:47:36,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:36,650 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:36,650 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:36,651 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:47:36,651 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:47:36,651 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:47:36,653 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:47:36,655 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:47:36,656 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:36,657 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-12 22:47:36,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:36,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:36,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:36,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:36,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:36,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:47:36,666 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:47:36,667 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:47:36,670 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:47:37,420 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:47:37,420 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:47:37,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76, 76] total 115 [2021-11-12 22:47:37,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92055231] [2021-11-12 22:47:37,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:47:37,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2021-11-12 22:47:37,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:47:37,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2021-11-12 22:47:37,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3020, Invalid=11260, Unknown=0, NotChecked=0, Total=14280 [2021-11-12 22:47:37,423 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand has 115 states, 115 states have (on average 2.3130434782608695) internal successors, (266), 115 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:47:38,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:47:38,393 INFO L93 Difference]: Finished difference Result 272 states and 274 transitions. [2021-11-12 22:47:38,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-11-12 22:47:38,394 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 115 states have (on average 2.3130434782608695) internal successors, (266), 115 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-11-12 22:47:38,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:47:38,395 INFO L225 Difference]: With dead ends: 272 [2021-11-12 22:47:38,395 INFO L226 Difference]: Without dead ends: 158 [2021-11-12 22:47:38,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6361 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=5162, Invalid=19018, Unknown=0, NotChecked=0, Total=24180 [2021-11-12 22:47:38,398 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 460 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 286.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.74ms SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 347.03ms IncrementalHoareTripleChecker+Time [2021-11-12 22:47:38,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [460 Valid, 349 Invalid, 992 Unknown, 0 Unchecked, 2.74ms Time], IncrementalHoareTripleChecker [270 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 347.03ms Time] [2021-11-12 22:47:38,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-11-12 22:47:38,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 152. [2021-11-12 22:47:38,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.0132450331125828) internal successors, (153), 151 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:47:38,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 153 transitions. [2021-11-12 22:47:38,442 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 153 transitions. Word has length 150 [2021-11-12 22:47:38,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:47:38,442 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 153 transitions. [2021-11-12 22:47:38,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 115 states have (on average 2.3130434782608695) internal successors, (266), 115 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:47:38,443 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 153 transitions. [2021-11-12 22:47:38,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-12 22:47:38,444 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:47:38,444 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 1, 1, 1, 1, 1] [2021-11-12 22:47:38,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2021-11-12 22:47:38,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1899 [2021-11-12 22:47:38,654 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:47:38,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:47:38,654 INFO L85 PathProgramCache]: Analyzing trace with hash 214155202, now seen corresponding path program 68 times [2021-11-12 22:47:38,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:47:38,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16844593] [2021-11-12 22:47:38,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:47:38,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:47:38,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:47:41,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2665 backedges. 0 proven. 2665 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:47:41,784 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:47:41,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16844593] [2021-11-12 22:47:41,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16844593] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:47:41,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928048143] [2021-11-12 22:47:41,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 22:47:41,784 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:47:41,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:47:41,785 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:47:41,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2021-11-12 22:48:25,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 37 check-sat command(s) [2021-11-12 22:48:25,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:48:25,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 157 conjunts are in the unsatisfiable core [2021-11-12 22:48:25,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:48:28,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-12 22:48:32,924 INFO L354 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2021-11-12 22:48:32,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 32 [2021-11-12 22:48:33,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2665 backedges. 1926 proven. 739 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:48:33,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:48:40,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2021-11-12 22:48:40,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 40 [2021-11-12 22:48:46,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2665 backedges. 1890 proven. 775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:48:46,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928048143] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:48:46,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1263449555] [2021-11-12 22:48:46,372 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:48:46,372 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:48:46,372 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:48:46,372 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:48:46,372 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:48:46,374 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:48:46,374 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:48:46,375 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:48:46,375 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:48:46,375 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:48:46,375 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:48:46,376 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:48:46,376 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:48:46,377 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_215|], 10=[|v_#valid_222|]} [2021-11-12 22:48:46,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:48:46,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:48:46,381 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:48:46,381 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:48:46,382 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:48:46,382 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:48:46,382 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:48:46,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:48:46,383 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:48:46,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:48:46,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:48:46,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:48:46,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:48:46,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:48:46,393 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:48:46,394 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:48:46,394 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:48:46,394 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:48:46,394 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:48:46,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:48:46,395 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:48:46,396 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:48:46,396 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:48:46,397 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:48:46,397 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:48:46,399 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:48:46,399 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:48:46,399 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:48:46,399 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:48:46,400 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:48:46,400 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:48:46,400 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:48:46,401 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:48:46,402 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_216|], 10=[|v_#valid_223|]} [2021-11-12 22:48:46,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:48:46,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:48:46,410 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:48:46,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:48:46,411 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:48:46,411 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:48:46,412 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:48:46,412 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:48:46,412 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:48:46,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:48:46,414 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:48:46,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:48:46,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:48:46,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:48:46,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:48:46,421 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:48:46,422 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:48:46,423 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:48:46,423 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:48:46,423 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:48:46,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:48:46,425 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:48:46,425 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:48:46,426 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:48:46,426 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:48:46,426 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:48:46,427 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:48:46,428 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:48:46,429 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:48:46,429 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:48:46,430 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-11-12 22:48:46,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:48:46,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:48:46,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:48:46,437 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:48:46,438 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:48:46,439 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:48:46,439 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:48:46,439 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:48:46,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:48:46,441 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:48:46,442 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:48:46,442 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-11-12 22:48:46,443 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:48:46,443 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:132, output treesize:128 [2021-11-12 22:48:46,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:48:46,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:48:46,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:48:46,463 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:48:46,466 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:48:46,467 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:48:46,467 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:48:46,468 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:48:46,468 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:48:46,468 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:48:46,469 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:48:46,469 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-12 22:48:46,470 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:48:46,471 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:48:46,472 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:48:46,473 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 253 [2021-11-12 22:48:46,475 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 314 [2021-11-12 22:48:46,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:48:46,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:48:46,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:48:46,488 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:48:46,488 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:48:46,489 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:48:46,489 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:48:46,489 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:48:46,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:48:46,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:48:46,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:48:46,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 56 [2021-11-12 22:48:46,501 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:48:46,501 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-12 22:48:46,502 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:48:46,502 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-12 22:48:46,502 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:48:46,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:48:46,512 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:48:46,516 INFO L180 QuantifierPusher]: treesize reduction 99, result has 73.9 percent of original size [2021-11-12 22:48:46,518 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 281 [2021-11-12 22:48:46,518 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:48:46,518 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:388, output treesize:281 [2021-11-12 22:48:46,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:48:46,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:48:46,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:48:46,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:48:46,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:48:46,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:48:46,535 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:48:46,536 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:48:46,536 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:48:46,536 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:48:46,537 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:48:46,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:48:46,541 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:48:46,541 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:48:46,541 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:48:46,541 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:48:46,541 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:48:46,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:48:46,542 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:48:46,543 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:48:46,543 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:48:46,544 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:48:46,544 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:48:46,546 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:48:46,547 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:48:46,548 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:48:46,549 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-12 22:48:46,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:48:46,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:48:46,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:48:46,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:48:46,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:48:46,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:48:46,558 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:48:46,559 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:48:46,562 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:48:47,891 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:48:47,891 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:48:47,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78, 78] total 229 [2021-11-12 22:48:47,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161785051] [2021-11-12 22:48:47,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:48:47,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 229 states [2021-11-12 22:48:47,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:48:47,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 229 interpolants. [2021-11-12 22:48:47,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4033, Invalid=50488, Unknown=1, NotChecked=0, Total=54522 [2021-11-12 22:48:47,895 INFO L87 Difference]: Start difference. First operand 152 states and 153 transitions. Second operand has 229 states, 229 states have (on average 1.9563318777292575) internal successors, (448), 229 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:48:59,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:48:59,746 INFO L93 Difference]: Finished difference Result 267 states and 269 transitions. [2021-11-12 22:48:59,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2021-11-12 22:48:59,747 INFO L78 Accepts]: Start accepts. Automaton has has 229 states, 229 states have (on average 1.9563318777292575) internal successors, (448), 229 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2021-11-12 22:48:59,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:48:59,748 INFO L225 Difference]: With dead ends: 267 [2021-11-12 22:48:59,748 INFO L226 Difference]: Without dead ends: 153 [2021-11-12 22:48:59,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 331 SyntacticMatches, 1 SemanticMatches, 325 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24141 ImplicationChecksByTransitivity, 29.8s TimeCoverageRelationStatistics Valid=8825, Invalid=97776, Unknown=1, NotChecked=0, Total=106602 [2021-11-12 22:48:59,756 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 188 mSDsluCounter, 3251 mSDsCounter, 0 mSdLazyCounter, 10009 mSolverCounterSat, 397 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3408.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 3289 SdHoareTripleChecker+Invalid, 10586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.18ms SdHoareTripleChecker+Time, 397 IncrementalHoareTripleChecker+Valid, 10009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 180 IncrementalHoareTripleChecker+Unchecked, 4058.16ms IncrementalHoareTripleChecker+Time [2021-11-12 22:48:59,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 3289 Invalid, 10586 Unknown, 0 Unchecked, 16.18ms Time], IncrementalHoareTripleChecker [397 Valid, 10009 Invalid, 0 Unknown, 180 Unchecked, 4058.16ms Time] [2021-11-12 22:48:59,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-11-12 22:48:59,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2021-11-12 22:48:59,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.013157894736842) internal successors, (154), 152 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:48:59,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 154 transitions. [2021-11-12 22:48:59,801 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 154 transitions. Word has length 151 [2021-11-12 22:48:59,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:48:59,802 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 154 transitions. [2021-11-12 22:48:59,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 229 states, 229 states have (on average 1.9563318777292575) internal successors, (448), 229 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:48:59,802 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 154 transitions. [2021-11-12 22:48:59,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-12 22:48:59,803 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:48:59,803 INFO L514 BasicCegarLoop]: trace histogram [38, 37, 36, 36, 1, 1, 1, 1, 1] [2021-11-12 22:48:59,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2021-11-12 22:49:00,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1922,70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:49:00,026 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:49:00,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:49:00,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1517001572, now seen corresponding path program 69 times [2021-11-12 22:49:00,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:49:00,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299324691] [2021-11-12 22:49:00,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:49:00,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:49:00,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:49:03,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2703 backedges. 1 proven. 2702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:49:03,352 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:49:03,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299324691] [2021-11-12 22:49:03,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299324691] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:49:03,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480585581] [2021-11-12 22:49:03,353 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-12 22:49:03,353 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:49:03,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:49:03,353 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:49:03,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2021-11-12 22:49:03,726 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-12 22:49:03,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:49:03,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 156 conjunts are in the unsatisfiable core [2021-11-12 22:49:03,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:49:03,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-11-12 22:49:04,000 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-11-12 22:49:04,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-11-12 22:49:11,671 INFO L354 Elim1Store]: treesize reduction 42, result has 6.7 percent of original size [2021-11-12 22:49:11,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 40 [2021-11-12 22:49:11,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2703 backedges. 0 proven. 2703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:49:11,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:49:12,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 49 [2021-11-12 22:49:12,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 379 treesize of output 363 [2021-11-12 22:49:12,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2703 backedges. 1 proven. 2702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:49:12,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480585581] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:49:12,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1990416526] [2021-11-12 22:49:12,838 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:49:12,839 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:49:12,839 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:49:12,839 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:49:12,839 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:49:12,840 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:12,841 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:49:12,841 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:12,841 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:49:12,842 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:49:12,842 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:12,842 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:49:12,843 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:49:12,844 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_218|], 10=[|v_#valid_225|]} [2021-11-12 22:49:12,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:49:12,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:49:12,848 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:12,848 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:49:12,849 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:12,849 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:49:12,849 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:49:12,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:12,850 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:12,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:49:12,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:49:12,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:49:12,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:49:12,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:49:12,858 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:12,859 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:49:12,859 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:12,860 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:49:12,860 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:49:12,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:12,861 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:12,861 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:12,862 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:49:12,862 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:49:12,862 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:49:12,864 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:49:12,865 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:49:12,866 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:12,866 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:49:12,866 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:49:12,867 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:12,867 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:49:12,868 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:49:12,869 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_219|], 10=[|v_#valid_226|]} [2021-11-12 22:49:12,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:49:12,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:49:12,877 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:49:12,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:49:12,877 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:12,878 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:49:12,878 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:12,879 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:49:12,879 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:49:12,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:12,881 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:12,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:49:12,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:49:12,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:49:12,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:49:12,887 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:12,889 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:49:12,889 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:12,889 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:49:12,889 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:49:12,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:12,891 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:12,892 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:12,892 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:49:12,893 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:49:12,893 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:49:12,894 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:12,895 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:49:12,895 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:12,895 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:49:12,896 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-11-12 22:49:12,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:49:12,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:49:12,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:49:12,903 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:12,904 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:49:12,904 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:12,904 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:49:12,904 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:49:12,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:12,906 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:12,907 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:12,908 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-11-12 22:49:12,908 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:49:12,908 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:132, output treesize:128 [2021-11-12 22:49:12,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:12,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:12,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:12,928 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:12,931 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:49:12,933 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:12,933 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:49:12,933 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:12,934 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-12 22:49:12,934 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:49:12,934 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:12,935 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:49:12,936 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 274 [2021-11-12 22:49:12,936 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:49:12,937 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:12,938 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 253 [2021-11-12 22:49:12,940 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 314 [2021-11-12 22:49:12,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:49:12,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:49:12,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:49:12,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 56 [2021-11-12 22:49:12,956 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:12,957 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-12 22:49:12,957 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:12,957 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-11-12 22:49:12,957 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:49:12,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:49:12,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:49:12,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:49:12,967 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:12,968 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:49:12,968 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:12,968 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:49:12,968 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:49:12,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:12,978 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:12,982 INFO L180 QuantifierPusher]: treesize reduction 97, result has 74.3 percent of original size [2021-11-12 22:49:12,983 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 281 [2021-11-12 22:49:12,984 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:49:12,984 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:388, output treesize:281 [2021-11-12 22:49:12,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:12,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:12,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:12,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:12,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:12,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:13,001 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:49:13,002 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:49:13,002 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:13,002 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:49:13,003 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:49:13,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:49:13,006 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:13,006 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:49:13,007 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:13,007 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:49:13,007 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:49:13,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:13,008 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:13,009 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:13,009 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:49:13,009 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:49:13,009 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:49:13,011 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:49:13,012 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:49:13,013 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:13,014 INFO L185 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size 71 [2021-11-12 22:49:13,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:13,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:13,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:13,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:13,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:13,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:13,024 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:13,025 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-12 22:49:13,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:13,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:13,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:13,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:13,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:13,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:13,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:13,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:13,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:13,040 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:49:13,041 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:49:13,048 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:49:14,130 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:49:14,130 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:49:14,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79, 79] total 120 [2021-11-12 22:49:14,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546418055] [2021-11-12 22:49:14,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:49:14,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2021-11-12 22:49:14,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:49:14,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2021-11-12 22:49:14,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=15086, Unknown=0, NotChecked=0, Total=15500 [2021-11-12 22:49:14,132 INFO L87 Difference]: Start difference. First operand 153 states and 154 transitions. Second operand has 120 states, 120 states have (on average 2.25) internal successors, (270), 120 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:49:17,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:49:17,288 INFO L93 Difference]: Finished difference Result 270 states and 272 transitions. [2021-11-12 22:49:17,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2021-11-12 22:49:17,288 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 120 states have (on average 2.25) internal successors, (270), 120 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2021-11-12 22:49:17,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:49:17,289 INFO L225 Difference]: With dead ends: 270 [2021-11-12 22:49:17,289 INFO L226 Difference]: Without dead ends: 268 [2021-11-12 22:49:17,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 559 GetRequests, 405 SyntacticMatches, 5 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2654 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=519, Invalid=22131, Unknown=0, NotChecked=0, Total=22650 [2021-11-12 22:49:17,291 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 114 mSDsluCounter, 3700 mSDsCounter, 0 mSdLazyCounter, 4639 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1512.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 3740 SdHoareTripleChecker+Invalid, 6357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.80ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 4639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1681 IncrementalHoareTripleChecker+Unchecked, 1805.43ms IncrementalHoareTripleChecker+Time [2021-11-12 22:49:17,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 3740 Invalid, 6357 Unknown, 0 Unchecked, 10.80ms Time], IncrementalHoareTripleChecker [37 Valid, 4639 Invalid, 0 Unknown, 1681 Unchecked, 1805.43ms Time] [2021-11-12 22:49:17,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-11-12 22:49:17,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 156. [2021-11-12 22:49:17,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 1.0129032258064516) internal successors, (157), 155 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:49:17,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 157 transitions. [2021-11-12 22:49:17,353 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 157 transitions. Word has length 152 [2021-11-12 22:49:17,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:49:17,354 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 157 transitions. [2021-11-12 22:49:17,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 120 states have (on average 2.25) internal successors, (270), 120 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:49:17,354 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 157 transitions. [2021-11-12 22:49:17,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-12 22:49:17,354 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:49:17,355 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 1, 1, 1, 1, 1] [2021-11-12 22:49:17,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2021-11-12 22:49:17,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1945,71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:49:17,555 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:49:17,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:49:17,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1343149471, now seen corresponding path program 70 times [2021-11-12 22:49:17,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:49:17,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710005727] [2021-11-12 22:49:17,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:49:17,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:49:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:49:20,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2813 backedges. 0 proven. 2813 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:49:20,959 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:49:20,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710005727] [2021-11-12 22:49:20,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710005727] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:49:20,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929987379] [2021-11-12 22:49:20,959 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-12 22:49:20,959 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:49:20,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:49:20,960 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:49:20,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507d0aeb-98aa-4182-9bcb-c92e6f652c47/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2021-11-12 22:49:21,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:49:21,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 158 conjunts are in the unsatisfiable core [2021-11-12 22:49:21,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:49:21,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-12 22:49:25,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 26 [2021-11-12 22:49:25,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2813 backedges. 0 proven. 2813 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:49:25,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:49:26,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:49:26,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:49:26,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-11-12 22:49:26,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2021-11-12 22:49:26,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2813 backedges. 0 proven. 2813 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:49:26,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929987379] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:49:26,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1561475395] [2021-11-12 22:49:26,275 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-12 22:49:26,275 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:49:26,275 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:49:26,275 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:49:26,275 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:49:26,277 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:26,277 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:49:26,277 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:26,277 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 22:49:26,278 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:49:26,278 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:26,278 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 22:49:26,279 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-12 22:49:26,280 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_221|], 10=[|v_#valid_228|]} [2021-11-12 22:49:26,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:49:26,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 22:49:26,284 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:26,284 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:49:26,284 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:26,284 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 22:49:26,285 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:49:26,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:26,286 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:26,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:49:26,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:49:26,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:49:26,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:49:26,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 22:49:26,292 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:26,293 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:49:26,293 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:26,293 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 22:49:26,294 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:49:26,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:26,295 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:26,295 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:26,296 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-12 22:49:26,296 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:49:26,296 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-12 22:49:26,298 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size [2021-11-12 22:49:26,298 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:49:26,298 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:26,299 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:49:26,299 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:49:26,299 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:26,299 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-12 22:49:26,300 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-11-12 22:49:26,301 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_222|], 10=[|v_#valid_229|]} [2021-11-12 22:49:26,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:49:26,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:49:26,310 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:49:26,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-12 22:49:26,310 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:26,311 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:49:26,311 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:26,311 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:49:26,311 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:49:26,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:26,313 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:26,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:49:26,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:49:26,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:49:26,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-11-12 22:49:26,320 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:26,321 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:49:26,322 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:26,322 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-12 22:49:26,322 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:49:26,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:26,324 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:26,325 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:26,325 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-12 22:49:26,326 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:49:26,326 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:112, output treesize:105 [2021-11-12 22:49:26,327 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:26,328 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:49:26,328 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:26,328 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:49:26,329 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-11-12 22:49:26,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:49:26,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:49:26,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:49:26,343 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:26,344 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:49:26,344 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:26,345 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:49:26,345 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:49:26,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:26,348 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:26,349 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:26,350 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-11-12 22:49:26,351 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:49:26,351 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:125, output treesize:121 [2021-11-12 22:49:26,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:26,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:26,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:26,370 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:26,373 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:49:26,374 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:26,375 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:49:26,375 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:26,375 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-12 22:49:26,376 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:49:26,376 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:26,376 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-12 22:49:26,378 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 275 [2021-11-12 22:49:26,378 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:49:26,379 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:26,380 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 254 [2021-11-12 22:49:26,381 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 312 [2021-11-12 22:49:26,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:49:26,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:49:26,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:49:26,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 56 [2021-11-12 22:49:26,398 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:26,399 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-12 22:49:26,399 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:26,400 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-12 22:49:26,400 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:49:26,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:49:26,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 22:49:26,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2021-11-12 22:49:26,409 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:26,410 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:49:26,410 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:26,411 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-12 22:49:26,411 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 22:49:26,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:26,421 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:26,424 INFO L180 QuantifierPusher]: treesize reduction 94, result has 74.9 percent of original size [2021-11-12 22:49:26,426 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 281 [2021-11-12 22:49:26,426 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-12 22:49:26,426 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:383, output treesize:281 [2021-11-12 22:49:26,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:26,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:26,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:26,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:26,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:26,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:26,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:26,445 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-11-12 22:49:26,446 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 22:49:26,446 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:26,446 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-12 22:49:26,447 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-11-12 22:49:26,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 22:49:26,451 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:26,451 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:49:26,451 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:26,452 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-11-12 22:49:26,452 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 22:49:26,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:26,453 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:26,453 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:26,454 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-12 22:49:26,454 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-12 22:49:26,454 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:59 [2021-11-12 22:49:26,456 INFO L180 QuantifierPusher]: treesize reduction 31, result has 60.3 percent of original size [2021-11-12 22:49:26,457 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-12 22:49:26,458 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:26,459 INFO L185 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size 71 [2021-11-12 22:49:26,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:26,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:26,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:26,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:26,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:26,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:26,469 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:49:26,470 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-12 22:49:26,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:26,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:26,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:26,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:26,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:26,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:26,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:26,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:26,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:49:26,484 INFO L180 QuantifierPusher]: treesize reduction 30, result has 73.5 percent of original size [2021-11-12 22:49:26,485 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-12 22:49:26,489 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:49:27,543 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 22:49:27,543 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:49:27,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80, 80] total 119 [2021-11-12 22:49:27,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805762103] [2021-11-12 22:49:27,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:49:27,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2021-11-12 22:49:27,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:49:27,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2021-11-12 22:49:27,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=14922, Unknown=0, NotChecked=0, Total=15252 [2021-11-12 22:49:27,545 INFO L87 Difference]: Start difference. First operand 156 states and 157 transitions. Second operand has 119 states, 119 states have (on average 2.277310924369748) internal successors, (271), 119 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)