./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw --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 34fd2c5bce28a2f0a39de6b9c2d306403d911c32b4998862fc7a657ddcb319f4 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-20 05:12:18,978 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 05:12:18,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 05:12:19,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 05:12:19,015 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 05:12:19,017 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 05:12:19,019 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 05:12:19,021 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 05:12:19,024 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 05:12:19,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 05:12:19,026 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 05:12:19,028 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 05:12:19,029 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 05:12:19,030 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 05:12:19,032 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 05:12:19,034 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 05:12:19,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 05:12:19,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 05:12:19,039 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 05:12:19,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 05:12:19,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 05:12:19,049 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 05:12:19,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 05:12:19,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 05:12:19,056 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 05:12:19,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 05:12:19,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 05:12:19,058 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 05:12:19,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 05:12:19,070 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 05:12:19,070 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 05:12:19,071 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 05:12:19,073 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 05:12:19,074 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 05:12:19,075 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 05:12:19,076 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 05:12:19,077 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 05:12:19,077 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 05:12:19,077 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 05:12:19,080 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 05:12:19,082 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 05:12:19,083 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-20 05:12:19,135 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 05:12:19,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 05:12:19,137 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 05:12:19,138 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 05:12:19,138 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 05:12:19,138 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 05:12:19,138 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-20 05:12:19,145 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 05:12:19,146 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 05:12:19,146 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-20 05:12:19,147 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-20 05:12:19,147 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 05:12:19,148 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-20 05:12:19,148 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-20 05:12:19,148 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-20 05:12:19,149 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 05:12:19,150 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 05:12:19,150 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 05:12:19,150 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 05:12:19,150 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 05:12:19,150 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 05:12:19,151 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 05:12:19,151 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 05:12:19,151 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 05:12:19,151 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 05:12:19,152 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 05:12:19,152 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 05:12:19,152 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 05:12:19,152 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 05:12:19,152 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 05:12:19,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:12:19,153 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 05:12:19,153 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 05:12:19,154 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 05:12:19,154 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-20 05:12:19,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-20 05:12:19,154 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 05:12:19,154 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 05:12:19,155 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 05:12:19,155 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_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34fd2c5bce28a2f0a39de6b9c2d306403d911c32b4998862fc7a657ddcb319f4 [2021-10-20 05:12:19,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 05:12:19,509 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 05:12:19,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 05:12:19,514 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 05:12:19,515 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 05:12:19,516 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound10.c [2021-10-20 05:12:19,588 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/data/85069058b/0820000324e5468698289cc085c37f04/FLAGba5371d67 [2021-10-20 05:12:20,211 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 05:12:20,212 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound10.c [2021-10-20 05:12:20,225 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/data/85069058b/0820000324e5468698289cc085c37f04/FLAGba5371d67 [2021-10-20 05:12:20,544 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/data/85069058b/0820000324e5468698289cc085c37f04 [2021-10-20 05:12:20,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 05:12:20,548 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 05:12:20,550 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 05:12:20,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 05:12:20,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 05:12:20,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:12:20" (1/1) ... [2021-10-20 05:12:20,555 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@411fe859 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:12:20, skipping insertion in model container [2021-10-20 05:12:20,555 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:12:20" (1/1) ... [2021-10-20 05:12:20,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 05:12:20,577 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:12:20,780 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_a763e6cf-eb79-426b-bcbb-e74d36ab1963/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound10.c[458,471] [2021-10-20 05:12:20,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:12:20,811 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 05:12:20,826 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_a763e6cf-eb79-426b-bcbb-e74d36ab1963/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound10.c[458,471] [2021-10-20 05:12:20,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:12:20,850 INFO L208 MainTranslator]: Completed translation [2021-10-20 05:12:20,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:12:20 WrapperNode [2021-10-20 05:12:20,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 05:12:20,853 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 05:12:20,853 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 05:12:20,853 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 05:12:20,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:12:20" (1/1) ... [2021-10-20 05:12:20,871 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:12:20" (1/1) ... [2021-10-20 05:12:20,895 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 05:12:20,897 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 05:12:20,897 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 05:12:20,897 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 05:12:20,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:12:20" (1/1) ... [2021-10-20 05:12:20,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:12:20" (1/1) ... [2021-10-20 05:12:20,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:12:20" (1/1) ... [2021-10-20 05:12:20,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:12:20" (1/1) ... [2021-10-20 05:12:20,914 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:12:20" (1/1) ... [2021-10-20 05:12:20,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:12:20" (1/1) ... [2021-10-20 05:12:20,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:12:20" (1/1) ... [2021-10-20 05:12:20,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 05:12:20,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 05:12:20,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 05:12:20,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 05:12:20,927 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:12:20" (1/1) ... [2021-10-20 05:12:20,936 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:12:20,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:12:20,985 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 05:12:21,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 05:12:21,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-20 05:12:21,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 05:12:21,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 05:12:21,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 05:12:21,340 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 05:12:21,340 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-10-20 05:12:21,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:12:21 BoogieIcfgContainer [2021-10-20 05:12:21,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 05:12:21,346 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 05:12:21,346 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 05:12:21,350 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 05:12:21,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:12:20" (1/3) ... [2021-10-20 05:12:21,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1749d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:12:21, skipping insertion in model container [2021-10-20 05:12:21,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:12:20" (2/3) ... [2021-10-20 05:12:21,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1749d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:12:21, skipping insertion in model container [2021-10-20 05:12:21,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:12:21" (3/3) ... [2021-10-20 05:12:21,354 INFO L111 eAbstractionObserver]: Analyzing ICFG ps4-ll_unwindbound10.c [2021-10-20 05:12:21,361 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 05:12:21,361 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-20 05:12:21,442 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 05:12:21,462 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 [2021-10-20 05:12:21,462 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-20 05:12:21,506 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 16 states have internal predecessors, (22), 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) [2021-10-20 05:12:21,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-20 05:12:21,512 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:12:21,513 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-20 05:12:21,513 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:12:21,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:12:21,519 INFO L82 PathProgramCache]: Analyzing trace with hash 81490399, now seen corresponding path program 1 times [2021-10-20 05:12:21,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:12:21,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702081960] [2021-10-20 05:12:21,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:12:21,539 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:12:21,722 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-20 05:12:21,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [124129699] [2021-10-20 05:12:21,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:12:21,726 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 05:12:21,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:12:21,729 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 05:12:21,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-20 05:12:21,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:12:21,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-20 05:12:21,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:12:22,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:12:22,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:12:41,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:12:41,846 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:12:41,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702081960] [2021-10-20 05:12:41,847 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-20 05:12:41,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124129699] [2021-10-20 05:12:41,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124129699] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:12:41,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:12:41,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-20 05:12:41,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306656014] [2021-10-20 05:12:41,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 05:12:41,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:12:41,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 05:12:41,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=11, Unknown=1, NotChecked=0, Total=20 [2021-10-20 05:12:41,871 INFO L87 Difference]: Start difference. First operand has 17 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 16 states have internal predecessors, (22), 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 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-20 05:12:42,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:12:42,489 INFO L93 Difference]: Finished difference Result 40 states and 55 transitions. [2021-10-20 05:12:42,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-20 05:12:42,491 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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 5 [2021-10-20 05:12:42,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:12:42,498 INFO L225 Difference]: With dead ends: 40 [2021-10-20 05:12:42,498 INFO L226 Difference]: Without dead ends: 13 [2021-10-20 05:12:42,501 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 20062.9ms TimeCoverageRelationStatistics Valid=18, Invalid=23, Unknown=1, NotChecked=0, Total=42 [2021-10-20 05:12:42,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-20 05:12:42,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-20 05:12:42,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 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) [2021-10-20 05:12:42,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-10-20 05:12:42,531 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 5 [2021-10-20 05:12:42,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:12:42,532 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-10-20 05:12:42,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-20 05:12:42,532 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-10-20 05:12:42,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-20 05:12:42,533 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:12:42,533 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:12:42,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-20 05:12:42,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-20 05:12:42,755 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:12:42,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:12:42,756 INFO L82 PathProgramCache]: Analyzing trace with hash 908273882, now seen corresponding path program 1 times [2021-10-20 05:12:42,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:12:42,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006446789] [2021-10-20 05:12:42,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:12:42,757 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:12:42,774 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-20 05:12:42,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [945989407] [2021-10-20 05:12:42,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:12:42,776 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 05:12:42,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:12:42,778 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 05:12:42,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-20 05:12:42,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:12:42,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-20 05:12:42,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:12:42,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:12:42,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:12:42,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:12:42,987 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:12:42,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006446789] [2021-10-20 05:12:42,988 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-20 05:12:42,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945989407] [2021-10-20 05:12:42,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945989407] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-20 05:12:42,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [240773465] [2021-10-20 05:12:43,022 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-20 05:12:43,022 INFO L166 IcfgInterpreter]: Building call graph [2021-10-20 05:12:43,028 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-20 05:12:43,035 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-20 05:12:43,036 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-20 05:12:43,086 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:12:43,097 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 05:12:43,098 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:12:43,099 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-20 05:12:43,103 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 05:12:43,105 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:12:43,106 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-20 05:12:43,111 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-10-20 05:12:43,183 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_9|], 21=[|v_#valid_10|]} [2021-10-20 05:12:43,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:12:43,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:12:43,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:12:43,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-20 05:12:43,223 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:12:43,224 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-20 05:12:43,226 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:12:43,227 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-20 05:12:43,228 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-20 05:12:43,230 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:12:43,315 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:12:43,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:12:43,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:12:43,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:12:43,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:12:43,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:12:43,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:12:43,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:12:43,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:12:43,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:12:43,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-10-20 05:12:43,349 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:12:43,355 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-20 05:12:43,357 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:12:43,358 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-20 05:12:43,359 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-20 05:12:43,359 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:12:43,399 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:12:43,403 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:12:43,405 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-10-20 05:12:43,406 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-20 05:12:43,407 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:136, output treesize:111 [2021-10-20 05:12:43,419 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:12:43,427 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-10-20 05:12:43,445 INFO L180 QuantifierPusher]: treesize reduction 23, result has 88.0 percent of original size [2021-10-20 05:12:43,457 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-10-20 05:12:43,467 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:12:43,477 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 132 [2021-10-20 05:12:43,485 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:12:43,491 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 137 [2021-10-20 05:12:43,497 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:12:43,539 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:12:43,589 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:12:43,658 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:12:43,670 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 05:12:43,676 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:12:43,686 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 235 [2021-10-20 05:12:43,708 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 358 [2021-10-20 05:12:43,718 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:12:43,733 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 446 [2021-10-20 05:12:43,744 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:12:43,757 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 451 [2021-10-20 05:12:43,768 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:12:43,829 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:12:43,831 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:12:43,833 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:12:43,835 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:12:43,836 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:12:43,838 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:12:43,839 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:12:43,855 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:12:43,866 INFO L180 QuantifierPusher]: treesize reduction 50, result has 67.9 percent of original size [2021-10-20 05:12:43,871 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-10-20 05:12:43,876 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:12:43,881 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-10-20 05:12:43,885 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:12:43,889 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-10-20 05:12:43,897 INFO L180 QuantifierPusher]: treesize reduction 34, result has 60.5 percent of original size [2021-10-20 05:12:43,900 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-10-20 05:12:43,914 INFO L180 QuantifierPusher]: treesize reduction 50, result has 67.9 percent of original size [2021-10-20 05:12:43,917 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-10-20 05:12:43,924 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:12:43,930 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-10-20 05:12:43,931 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:12:43,943 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:12:43,945 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:12:43,946 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:12:43,947 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:12:43,953 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:12:43,963 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:12:43,976 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-20 05:12:44,716 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-20 05:12:44,716 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-20 05:12:44,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-20 05:12:44,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750845915] [2021-10-20 05:12:44,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-20 05:12:44,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:12:44,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-20 05:12:44,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-10-20 05:12:44,719 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 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) [2021-10-20 05:12:44,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:12:44,795 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2021-10-20 05:12:44,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-20 05:12:44,795 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 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) Word has length 10 [2021-10-20 05:12:44,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:12:44,797 INFO L225 Difference]: With dead ends: 35 [2021-10-20 05:12:44,797 INFO L226 Difference]: Without dead ends: 31 [2021-10-20 05:12:44,799 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 806.2ms TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-10-20 05:12:44,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-20 05:12:44,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2021-10-20 05:12:44,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 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) [2021-10-20 05:12:44,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-10-20 05:12:44,808 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 10 [2021-10-20 05:12:44,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:12:44,810 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-10-20 05:12:44,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 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) [2021-10-20 05:12:44,810 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-10-20 05:12:44,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-20 05:12:44,811 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:12:44,811 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-20 05:12:44,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-20 05:12:45,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 05:12:45,036 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:12:45,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:12:45,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1019667251, now seen corresponding path program 1 times [2021-10-20 05:12:45,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:12:45,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680347424] [2021-10-20 05:12:45,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:12:45,037 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:12:45,059 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-20 05:12:45,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [850738094] [2021-10-20 05:12:45,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:12:45,060 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 05:12:45,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:12:45,061 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 05:12:45,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-20 05:12:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:12:45,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-20 05:12:45,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:12:45,431 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:12:45,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:13:06,332 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:13:06,333 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:13:06,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680347424] [2021-10-20 05:13:06,333 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-20 05:13:06,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850738094] [2021-10-20 05:13:06,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850738094] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-20 05:13:06,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1443444950] [2021-10-20 05:13:06,336 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-20 05:13:06,337 INFO L166 IcfgInterpreter]: Building call graph [2021-10-20 05:13:06,337 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-20 05:13:06,337 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-20 05:13:06,338 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-20 05:13:06,344 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:06,345 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 05:13:06,346 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:06,347 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-20 05:13:06,347 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 05:13:06,348 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:06,349 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-20 05:13:06,351 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-10-20 05:13:06,355 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_10|], 21=[|v_#valid_11|]} [2021-10-20 05:13:06,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:13:06,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:13:06,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:13:06,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-20 05:13:06,368 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:06,368 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-20 05:13:06,369 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:06,369 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-20 05:13:06,370 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-20 05:13:06,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:06,376 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:06,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:13:06,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:13:06,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:13:06,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:13:06,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:13:06,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:13:06,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:13:06,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:13:06,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:13:06,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-10-20 05:13:06,399 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:06,402 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-20 05:13:06,402 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:06,403 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-20 05:13:06,403 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-20 05:13:06,404 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:06,408 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:06,410 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:06,412 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-10-20 05:13:06,413 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-20 05:13:06,413 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:136, output treesize:111 [2021-10-20 05:13:06,418 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:06,421 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-10-20 05:13:06,426 INFO L180 QuantifierPusher]: treesize reduction 23, result has 88.0 percent of original size [2021-10-20 05:13:06,430 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-10-20 05:13:06,436 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:06,448 INFO L185 QuantifierPusher]: treesize reduction 14, result has 91.4 percent of original size 149 [2021-10-20 05:13:06,454 INFO L180 QuantifierPusher]: treesize reduction 14, result has 91.9 percent of original size [2021-10-20 05:13:06,458 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 154 [2021-10-20 05:13:06,461 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:06,477 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:06,478 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:06,480 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:06,481 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:06,485 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:06,493 INFO L180 QuantifierPusher]: treesize reduction 50, result has 67.9 percent of original size [2021-10-20 05:13:06,497 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-10-20 05:13:06,500 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:06,505 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-10-20 05:13:06,508 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:06,511 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-10-20 05:13:06,519 INFO L180 QuantifierPusher]: treesize reduction 50, result has 67.9 percent of original size [2021-10-20 05:13:06,522 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-10-20 05:13:06,529 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:06,536 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-10-20 05:13:06,544 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:06,549 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-10-20 05:13:06,549 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:06,559 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:06,561 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:06,562 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:06,563 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:06,567 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:06,576 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:06,586 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-20 05:13:07,671 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-20 05:13:07,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-20 05:13:07,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-20 05:13:07,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701030242] [2021-10-20 05:13:07,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-20 05:13:07,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:13:07,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-20 05:13:07,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2021-10-20 05:13:07,673 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 12 states have internal predecessors, (22), 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) [2021-10-20 05:13:21,383 WARN L207 SmtUtils]: Spent 10.87 s on a formula simplification that was a NOOP. DAG size: 50 [2021-10-20 05:13:23,448 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0))) (let ((.cse2 (= (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~k~0) .cse0)) (.cse3 (< c_ULTIMATE.start_main_~c~0 c_ULTIMATE.start_main_~k~0)) (.cse1 (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0))) (and (or (not (= (+ (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0) .cse0 (* 2 .cse1)) (* 4 c_ULTIMATE.start_main_~x~0))) .cse2 .cse3) (or .cse2 (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) .cse3) (let ((.cse4 (* (- 13) c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0)) (.cse5 (* (- 1) c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0)) (.cse6 (* (- 6) c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0))) (or (forall ((ULTIMATE.start_main_~k~0 Int)) (or (< (+ c_ULTIMATE.start_main_~c~0 1) ULTIMATE.start_main_~k~0) (= (+ (* 2 c_ULTIMATE.start_main_~y~0) (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0) 1) (+ ULTIMATE.start_main_~k~0 (* c_ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~k~0))) (<= ULTIMATE.start_main_~k~0 c_ULTIMATE.start_main_~c~0))) (not (= (mod (+ .cse4 .cse5 .cse6) (- 4)) 0)) (< (+ c_ULTIMATE.start_main_~x~0 (* 3 .cse0) .cse1 1) (div (+ .cse4 .cse5 (- 4) .cse6) (- 4)))))))) is different from false [2021-10-20 05:13:45,657 WARN L207 SmtUtils]: Spent 10.17 s on a formula simplification that was a NOOP. DAG size: 41 [2021-10-20 05:13:47,804 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0))) (and (= (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~k~0) .cse0) (let ((.cse1 (* (- 13) c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0)) (.cse2 (* (- 1) c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0)) (.cse3 (* (- 6) c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0))) (or (forall ((ULTIMATE.start_main_~k~0 Int)) (or (< (+ c_ULTIMATE.start_main_~c~0 1) ULTIMATE.start_main_~k~0) (= (+ (* 2 c_ULTIMATE.start_main_~y~0) (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0) 1) (+ ULTIMATE.start_main_~k~0 (* c_ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~k~0))) (<= ULTIMATE.start_main_~k~0 c_ULTIMATE.start_main_~c~0))) (not (= (mod (+ .cse1 .cse2 .cse3) (- 4)) 0)) (< (+ c_ULTIMATE.start_main_~x~0 (* 3 .cse0) (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0) 1) (div (+ .cse1 .cse2 (- 4) .cse3) (- 4))))))) is different from false [2021-10-20 05:13:49,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:13:49,931 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2021-10-20 05:13:49,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-20 05:13:49,932 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 12 states have internal predecessors, (22), 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 12 [2021-10-20 05:13:49,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:13:49,933 INFO L225 Difference]: With dead ends: 33 [2021-10-20 05:13:49,933 INFO L226 Difference]: Without dead ends: 25 [2021-10-20 05:13:49,933 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 53612.4ms TimeCoverageRelationStatistics Valid=162, Invalid=595, Unknown=7, NotChecked=106, Total=870 [2021-10-20 05:13:49,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-20 05:13:49,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-10-20 05:13:49,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 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) [2021-10-20 05:13:49,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2021-10-20 05:13:49,941 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 12 [2021-10-20 05:13:49,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:13:49,941 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-10-20 05:13:49,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 12 states have internal predecessors, (22), 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) [2021-10-20 05:13:49,941 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2021-10-20 05:13:49,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-20 05:13:49,942 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:13:49,942 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1] [2021-10-20 05:13:49,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-20 05:13:50,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-10-20 05:13:50,143 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:13:50,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:13:50,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1641908438, now seen corresponding path program 2 times [2021-10-20 05:13:50,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:13:50,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805871925] [2021-10-20 05:13:50,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:13:50,144 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:13:50,162 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-20 05:13:50,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2114056946] [2021-10-20 05:13:50,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-20 05:13:50,163 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 05:13:50,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:13:50,164 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 05:13:50,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-20 05:13:50,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-20 05:13:50,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-20 05:13:50,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-20 05:13:50,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:13:50,760 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:13:50,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:13:50,909 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:13:50,909 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:13:50,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805871925] [2021-10-20 05:13:50,910 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-20 05:13:50,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114056946] [2021-10-20 05:13:50,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114056946] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-20 05:13:50,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1401349068] [2021-10-20 05:13:50,912 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-20 05:13:50,913 INFO L166 IcfgInterpreter]: Building call graph [2021-10-20 05:13:50,913 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-20 05:13:50,913 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-20 05:13:50,913 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-20 05:13:50,925 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:50,927 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 05:13:50,928 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:50,929 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-20 05:13:50,929 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 05:13:50,930 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:50,930 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-20 05:13:50,932 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-10-20 05:13:50,937 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_11|], 21=[|v_#valid_12|]} [2021-10-20 05:13:50,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:13:50,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:13:50,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:13:50,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-20 05:13:50,956 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:50,959 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-20 05:13:50,960 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:50,961 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-20 05:13:50,961 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-20 05:13:50,962 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:50,967 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:50,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:13:50,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:13:50,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:13:50,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:13:50,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:13:50,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:13:50,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:13:50,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:13:50,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:13:50,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-10-20 05:13:50,993 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:50,995 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-20 05:13:50,996 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:50,996 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-20 05:13:50,997 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-20 05:13:50,998 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:51,002 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:51,004 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:51,006 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-10-20 05:13:51,006 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-20 05:13:51,007 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:136, output treesize:111 [2021-10-20 05:13:51,011 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:51,014 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-10-20 05:13:51,019 INFO L180 QuantifierPusher]: treesize reduction 23, result has 88.0 percent of original size [2021-10-20 05:13:51,024 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-10-20 05:13:51,032 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:51,037 INFO L185 QuantifierPusher]: treesize reduction 6, result has 95.3 percent of original size 122 [2021-10-20 05:13:51,043 INFO L180 QuantifierPusher]: treesize reduction 6, result has 95.6 percent of original size [2021-10-20 05:13:51,046 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-10-20 05:13:51,049 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:51,065 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:51,086 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:51,132 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:51,136 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 05:13:51,139 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:51,144 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 223 [2021-10-20 05:13:51,160 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 347 [2021-10-20 05:13:51,167 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:51,178 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 435 [2021-10-20 05:13:51,189 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:51,199 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 440 [2021-10-20 05:13:51,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:51,251 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:51,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:51,255 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:51,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:51,257 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:51,258 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:51,260 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:51,270 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:51,278 INFO L180 QuantifierPusher]: treesize reduction 50, result has 67.9 percent of original size [2021-10-20 05:13:51,281 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-10-20 05:13:51,285 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:51,289 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-10-20 05:13:51,294 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:51,298 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-10-20 05:13:51,304 INFO L180 QuantifierPusher]: treesize reduction 34, result has 60.5 percent of original size [2021-10-20 05:13:51,307 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-10-20 05:13:51,315 INFO L180 QuantifierPusher]: treesize reduction 50, result has 67.9 percent of original size [2021-10-20 05:13:51,318 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-10-20 05:13:51,325 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:51,331 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-10-20 05:13:51,332 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:51,340 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:51,342 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:51,343 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:51,345 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:51,348 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:51,356 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:51,374 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-20 05:13:52,044 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-20 05:13:52,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-20 05:13:52,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-20 05:13:52,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46164300] [2021-10-20 05:13:52,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-20 05:13:52,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:13:52,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-20 05:13:52,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2021-10-20 05:13:52,049 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 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) [2021-10-20 05:13:52,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:13:52,276 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2021-10-20 05:13:52,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-20 05:13:52,277 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 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) Word has length 22 [2021-10-20 05:13:52,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:13:52,278 INFO L225 Difference]: With dead ends: 71 [2021-10-20 05:13:52,278 INFO L226 Difference]: Without dead ends: 67 [2021-10-20 05:13:52,279 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 908.8ms TimeCoverageRelationStatistics Valid=205, Invalid=665, Unknown=0, NotChecked=0, Total=870 [2021-10-20 05:13:52,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-10-20 05:13:52,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 47. [2021-10-20 05:13:52,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 46 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) [2021-10-20 05:13:52,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2021-10-20 05:13:52,309 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 22 [2021-10-20 05:13:52,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:13:52,309 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2021-10-20 05:13:52,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 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) [2021-10-20 05:13:52,309 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2021-10-20 05:13:52,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-20 05:13:52,310 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:13:52,310 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1] [2021-10-20 05:13:52,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-20 05:13:52,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-10-20 05:13:52,517 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:13:52,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:13:52,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1667839023, now seen corresponding path program 2 times [2021-10-20 05:13:52,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:13:52,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655984389] [2021-10-20 05:13:52,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:13:52,518 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:13:52,536 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-20 05:13:52,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2011932217] [2021-10-20 05:13:52,537 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-20 05:13:52,537 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 05:13:52,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:13:52,538 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 05:13:52,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-20 05:13:52,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-20 05:13:52,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-20 05:13:52,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-20 05:13:52,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:13:53,059 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:13:53,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:13:53,883 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:13:53,883 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 05:13:53,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655984389] [2021-10-20 05:13:53,883 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-20 05:13:53,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011932217] [2021-10-20 05:13:53,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011932217] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-20 05:13:53,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1758494519] [2021-10-20 05:13:53,886 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-20 05:13:53,886 INFO L166 IcfgInterpreter]: Building call graph [2021-10-20 05:13:53,886 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-20 05:13:53,886 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-20 05:13:53,886 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-20 05:13:53,897 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:53,897 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 05:13:53,898 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:53,899 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-20 05:13:53,899 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 05:13:53,899 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:53,900 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-20 05:13:53,901 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-10-20 05:13:53,907 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_12|], 21=[|v_#valid_13|]} [2021-10-20 05:13:53,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:13:53,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:13:53,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:13:53,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-20 05:13:53,918 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:53,919 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-20 05:13:53,920 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:53,920 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-20 05:13:53,920 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-20 05:13:53,921 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:53,925 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:53,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:13:53,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:13:53,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:13:53,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:13:53,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:13:53,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:13:53,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:13:53,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:13:53,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 05:13:53,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-10-20 05:13:53,944 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:53,948 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-20 05:13:53,948 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:53,949 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-20 05:13:53,949 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-20 05:13:53,949 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:53,954 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:53,956 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:53,957 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-10-20 05:13:53,958 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-20 05:13:53,958 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:136, output treesize:111 [2021-10-20 05:13:53,961 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:53,963 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-10-20 05:13:53,969 INFO L180 QuantifierPusher]: treesize reduction 23, result has 88.0 percent of original size [2021-10-20 05:13:53,971 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-10-20 05:13:53,975 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:53,981 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 235 [2021-10-20 05:13:53,984 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:53,988 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 238 [2021-10-20 05:13:53,992 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:54,007 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:54,008 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:54,009 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:54,011 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:54,020 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:54,030 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:54,036 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 176 [2021-10-20 05:13:54,041 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:54,048 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 248 [2021-10-20 05:13:54,052 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:54,056 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 253 [2021-10-20 05:13:54,060 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:54,076 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:54,077 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:54,078 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:54,080 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:54,081 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:54,086 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:54,100 INFO L180 QuantifierPusher]: treesize reduction 50, result has 67.9 percent of original size [2021-10-20 05:13:54,107 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-10-20 05:13:54,110 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:54,113 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-10-20 05:13:54,116 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:54,119 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 168 [2021-10-20 05:13:54,126 INFO L180 QuantifierPusher]: treesize reduction 50, result has 67.9 percent of original size [2021-10-20 05:13:54,129 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-10-20 05:13:54,137 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:54,142 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-10-20 05:13:54,148 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 05:13:54,151 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-10-20 05:13:54,158 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:54,192 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:54,193 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:54,194 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:54,195 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:54,198 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:54,223 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 05:13:54,234 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-20 05:13:55,166 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-20 05:13:55,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-20 05:13:55,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-20 05:13:55,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868502002] [2021-10-20 05:13:55,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-20 05:13:55,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 05:13:55,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-20 05:13:55,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2021-10-20 05:13:55,168 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 states have internal predecessors, (46), 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) [2021-10-20 05:13:57,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:13:57,294 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2021-10-20 05:13:57,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-20 05:13:57,295 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 states have internal predecessors, (46), 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 24 [2021-10-20 05:13:57,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:13:57,296 INFO L225 Difference]: With dead ends: 53 [2021-10-20 05:13:57,296 INFO L226 Difference]: Without dead ends: 47 [2021-10-20 05:13:57,297 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 2647.8ms TimeCoverageRelationStatistics Valid=163, Invalid=767, Unknown=0, NotChecked=0, Total=930 [2021-10-20 05:13:57,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-20 05:13:57,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-10-20 05:13:57,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.0217391304347827) internal successors, (47), 46 states have internal predecessors, (47), 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) [2021-10-20 05:13:57,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2021-10-20 05:13:57,309 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 24 [2021-10-20 05:13:57,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:13:57,310 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2021-10-20 05:13:57,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 states have internal predecessors, (46), 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) [2021-10-20 05:13:57,310 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2021-10-20 05:13:57,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-20 05:13:57,311 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:13:57,311 INFO L512 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1] [2021-10-20 05:13:57,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-20 05:13:57,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 05:13:57,527 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:13:57,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:13:57,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1490352846, now seen corresponding path program 3 times [2021-10-20 05:13:57,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:13:57,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116028647] [2021-10-20 05:13:57,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:13:57,528 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:13:57,551 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-20 05:13:57,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [846149930] [2021-10-20 05:13:57,552 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-20 05:13:57,552 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 05:13:57,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:13:57,553 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 05:13:57,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-20 05:13:58,985 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-20 05:13:58,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-10-20 05:13:58,986 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-20 05:13:59,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 05:13:59,066 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-20 05:13:59,066 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-20 05:13:59,067 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 05:13:59,069 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 05:13:59,069 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 05:13:59,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-20 05:13:59,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 05:13:59,281 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 05:13:59,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:13:59 BoogieIcfgContainer [2021-10-20 05:13:59,355 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 05:13:59,356 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 05:13:59,356 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 05:13:59,356 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 05:13:59,356 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:12:21" (3/4) ... [2021-10-20 05:13:59,358 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-20 05:13:59,418 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/witness.graphml [2021-10-20 05:13:59,418 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 05:13:59,419 INFO L168 Benchmark]: Toolchain (without parser) took 98870.88 ms. Allocated memory was 81.8 MB in the beginning and 121.6 MB in the end (delta: 39.8 MB). Free memory was 46.3 MB in the beginning and 90.0 MB in the end (delta: -43.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:13:59,419 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 81.8 MB. Free memory was 54.1 MB in the beginning and 54.1 MB in the end (delta: 27.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:13:59,420 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.80 ms. Allocated memory was 81.8 MB in the beginning and 100.7 MB in the end (delta: 18.9 MB). Free memory was 46.2 MB in the beginning and 76.1 MB in the end (delta: -29.8 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2021-10-20 05:13:59,420 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.27 ms. Allocated memory is still 100.7 MB. Free memory was 76.1 MB in the beginning and 74.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:13:59,420 INFO L168 Benchmark]: Boogie Preprocessor took 27.33 ms. Allocated memory is still 100.7 MB. Free memory was 74.4 MB in the beginning and 73.5 MB in the end (delta: 919.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:13:59,421 INFO L168 Benchmark]: RCFGBuilder took 419.18 ms. Allocated memory is still 100.7 MB. Free memory was 73.5 MB in the beginning and 63.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-20 05:13:59,421 INFO L168 Benchmark]: TraceAbstraction took 98009.58 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 62.4 MB in the beginning and 94.2 MB in the end (delta: -31.8 MB). Peak memory consumption was 56.7 MB. Max. memory is 16.1 GB. [2021-10-20 05:13:59,421 INFO L168 Benchmark]: Witness Printer took 62.70 ms. Allocated memory is still 121.6 MB. Free memory was 94.2 MB in the beginning and 90.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-20 05:13:59,423 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 81.8 MB. Free memory was 54.1 MB in the beginning and 54.1 MB in the end (delta: 27.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 301.80 ms. Allocated memory was 81.8 MB in the beginning and 100.7 MB in the end (delta: 18.9 MB). Free memory was 46.2 MB in the beginning and 76.1 MB in the end (delta: -29.8 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.27 ms. Allocated memory is still 100.7 MB. Free memory was 76.1 MB in the beginning and 74.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.33 ms. Allocated memory is still 100.7 MB. Free memory was 74.4 MB in the beginning and 73.5 MB in the end (delta: 919.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 419.18 ms. Allocated memory is still 100.7 MB. Free memory was 73.5 MB in the beginning and 63.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 98009.58 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 62.4 MB in the beginning and 94.2 MB in the end (delta: -31.8 MB). Peak memory consumption was 56.7 MB. Max. memory is 16.1 GB. * Witness Printer took 62.70 ms. Allocated memory is still 121.6 MB. Free memory was 94.2 MB in the beginning and 90.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 12]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] int counter = 0; [L19] short k; [L20] long long y, x, c; [L21] k = __VERIFIER_nondet_short() [L23] y = 0 [L24] x = 0 [L25] c = 0 VAL [counter=0] [L27] EXPR counter++ VAL [counter=1] [L27] COND TRUE counter++<10 [L10] COND FALSE !(!(cond)) VAL [counter=1] [L30] COND FALSE !(!(c < k)) [L33] c = c + 1 [L34] y = y + 1 [L35] x = y * y * y + x VAL [counter=1] [L27] EXPR counter++ VAL [counter=2] [L27] COND TRUE counter++<10 [L10] COND FALSE !(!(cond)) VAL [counter=2] [L30] COND FALSE !(!(c < k)) [L33] c = c + 1 [L34] y = y + 1 [L35] x = y * y * y + x VAL [counter=2] [L27] EXPR counter++ VAL [counter=3] [L27] COND TRUE counter++<10 [L10] COND FALSE !(!(cond)) VAL [counter=3] [L30] COND FALSE !(!(c < k)) [L33] c = c + 1 [L34] y = y + 1 [L35] x = y * y * y + x VAL [counter=3] [L27] EXPR counter++ VAL [counter=4] [L27] COND TRUE counter++<10 [L10] COND FALSE !(!(cond)) VAL [counter=4] [L30] COND FALSE !(!(c < k)) [L33] c = c + 1 [L34] y = y + 1 [L35] x = y * y * y + x VAL [counter=4] [L27] EXPR counter++ VAL [counter=5] [L27] COND TRUE counter++<10 [L10] COND FALSE !(!(cond)) VAL [counter=5] [L30] COND FALSE !(!(c < k)) [L33] c = c + 1 [L34] y = y + 1 [L35] x = y * y * y + x VAL [counter=5] [L27] EXPR counter++ VAL [counter=6] [L27] COND TRUE counter++<10 [L10] COND FALSE !(!(cond)) VAL [counter=6] [L30] COND FALSE !(!(c < k)) [L33] c = c + 1 [L34] y = y + 1 [L35] x = y * y * y + x VAL [counter=6] [L27] EXPR counter++ VAL [counter=7] [L27] COND TRUE counter++<10 [L10] COND FALSE !(!(cond)) VAL [counter=7] [L30] COND FALSE !(!(c < k)) [L33] c = c + 1 [L34] y = y + 1 [L35] x = y * y * y + x VAL [counter=7] [L27] EXPR counter++ VAL [counter=8] [L27] COND TRUE counter++<10 [L10] COND FALSE !(!(cond)) VAL [counter=8] [L30] COND FALSE !(!(c < k)) [L33] c = c + 1 [L34] y = y + 1 [L35] x = y * y * y + x VAL [counter=8] [L27] EXPR counter++ VAL [counter=9] [L27] COND TRUE counter++<10 [L10] COND FALSE !(!(cond)) VAL [counter=9] [L30] COND FALSE !(!(c < k)) [L33] c = c + 1 [L34] y = y + 1 [L35] x = y * y * y + x VAL [counter=9] [L27] EXPR counter++ VAL [counter=10] [L27] COND TRUE counter++<10 [L10] COND FALSE !(!(cond)) VAL [counter=10] [L30] COND FALSE !(!(c < k)) [L33] c = c + 1 [L34] y = y + 1 [L35] x = y * y * y + x VAL [counter=10] [L27] EXPR counter++ VAL [counter=11] [L27] COND FALSE !(counter++<10) [L10] COND TRUE !(cond) VAL [counter=11] [L12] reach_error() VAL [counter=11] - UnprovableResult [Line: 12]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 12]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 97840.3ms, OverallIterations: 6, TraceHistogramMax: 11, EmptinessCheckTime: 30.3ms, AutomataDifference: 45347.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 23.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 46 SDtfs, 156 SDslu, 200 SDs, 0 SdLazy, 229 SolverSat, 55 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 3336.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 237 GetRequests, 128 SyntacticMatches, 3 SemanticMatches, 106 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 78038.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=4, InterpolantAutomatonStates: 68, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 71.6ms AutomataMinimizationTime, 5 MinimizatonAttempts, 28 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 45.3ms SsaConstructionTime, 1920.2ms SatisfiabilityAnalysisTime, 42772.4ms InterpolantComputationTime, 119 NumberOfCodeBlocks, 119 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 136 ConstructedInterpolants, 20 QuantifiedInterpolants, 1392 SizeOfPredicates, 21 NumberOfNonLiveVariables, 447 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 0/156 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-20 05:13:59,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a763e6cf-eb79-426b-bcbb-e74d36ab1963/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...