./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG --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 cb55eb0e5d7c4df3b95a55b83f19894edf68e79ccb0eab5e69a8aa23c994caed ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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-b2eff8b [2021-10-29 05:55:04,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:55:04,851 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:55:04,921 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:55:04,921 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:55:04,928 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:55:04,930 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:55:04,935 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:55:04,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:55:04,949 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:55:04,950 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:55:04,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:55:04,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:55:04,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:55:04,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:55:04,966 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:55:04,968 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:55:04,969 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:55:04,972 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:55:04,984 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:55:04,987 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:55:04,988 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:55:04,992 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:55:04,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:55:04,999 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:55:04,999 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:55:05,000 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:55:05,002 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:55:05,003 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:55:05,005 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:55:05,005 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:55:05,007 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:55:05,009 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:55:05,011 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:55:05,013 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:55:05,013 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:55:05,014 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:55:05,014 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:55:05,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:55:05,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:55:05,016 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:55:05,018 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:55:05,076 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:55:05,076 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:55:05,078 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:55:05,078 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:55:05,079 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:55:05,079 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:55:05,079 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:55:05,079 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:55:05,080 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:55:05,080 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:55:05,081 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:55:05,082 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:55:05,082 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:55:05,082 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:55:05,082 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:55:05,084 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:55:05,084 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:55:05,084 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:55:05,085 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:55:05,085 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:55:05,085 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:55:05,085 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:55:05,086 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:55:05,086 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:55:05,086 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:55:05,087 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:55:05,087 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:55:05,087 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:55:05,088 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:55:05,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:55:05,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:55:05,090 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:55:05,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:55:05,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:55:05,091 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:55:05,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:55:05,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:55:05,092 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:55:05,092 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:55:05,093 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_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb55eb0e5d7c4df3b95a55b83f19894edf68e79ccb0eab5e69a8aa23c994caed [2021-10-29 05:55:05,413 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:55:05,444 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:55:05,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:55:05,449 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:55:05,450 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:55:05,452 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound50.c [2021-10-29 05:55:05,533 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/data/5cf8df1fa/bd0a974f4a3c4730b55faf5430c907b2/FLAG28704f1ee [2021-10-29 05:55:06,068 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:55:06,069 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound50.c [2021-10-29 05:55:06,080 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/data/5cf8df1fa/bd0a974f4a3c4730b55faf5430c907b2/FLAG28704f1ee [2021-10-29 05:55:06,426 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/data/5cf8df1fa/bd0a974f4a3c4730b55faf5430c907b2 [2021-10-29 05:55:06,429 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:55:06,431 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:55:06,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:55:06,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:55:06,442 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:55:06,443 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:55:06" (1/1) ... [2021-10-29 05:55:06,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b0b15f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:55:06, skipping insertion in model container [2021-10-29 05:55:06,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:55:06" (1/1) ... [2021-10-29 05:55:06,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:55:06,473 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:55:06,675 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_c46cf041-234f-4a54-847b-f89951ba14cd/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound50.c[588,601] [2021-10-29 05:55:06,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:55:06,752 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:55:06,781 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_c46cf041-234f-4a54-847b-f89951ba14cd/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound50.c[588,601] [2021-10-29 05:55:06,810 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:55:06,834 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:55:06,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:55:06 WrapperNode [2021-10-29 05:55:06,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:55:06,836 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:55:06,836 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:55:06,836 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:55:06,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:55:06" (1/1) ... [2021-10-29 05:55:06,870 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:55:06" (1/1) ... [2021-10-29 05:55:06,911 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:55:06,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:55:06,913 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:55:06,913 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:55:06,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:55:06" (1/1) ... [2021-10-29 05:55:06,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:55:06" (1/1) ... [2021-10-29 05:55:06,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:55:06" (1/1) ... [2021-10-29 05:55:06,930 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:55:06" (1/1) ... [2021-10-29 05:55:06,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:55:06" (1/1) ... [2021-10-29 05:55:06,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:55:06" (1/1) ... [2021-10-29 05:55:06,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:55:06" (1/1) ... [2021-10-29 05:55:06,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:55:06,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:55:06,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:55:06,957 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:55:06,970 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:55:06" (1/1) ... [2021-10-29 05:55:06,979 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:55:06,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:55:07,020 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:55:07,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:55:07,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:55:07,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:55:07,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:55:07,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:55:07,498 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:55:07,498 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2021-10-29 05:55:07,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:55:07 BoogieIcfgContainer [2021-10-29 05:55:07,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:55:07,504 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:55:07,504 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:55:07,508 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:55:07,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:55:06" (1/3) ... [2021-10-29 05:55:07,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c8ef7b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:55:07, skipping insertion in model container [2021-10-29 05:55:07,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:55:06" (2/3) ... [2021-10-29 05:55:07,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c8ef7b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:55:07, skipping insertion in model container [2021-10-29 05:55:07,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:55:07" (3/3) ... [2021-10-29 05:55:07,512 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_unwindbound50.c [2021-10-29 05:55:07,518 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:55:07,518 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-10-29 05:55:07,576 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:55:07,585 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 [2021-10-29 05:55:07,585 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-10-29 05:55:07,604 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 37 states have (on average 1.6756756756756757) internal successors, (62), 48 states have internal predecessors, (62), 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) [2021-10-29 05:55:07,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-29 05:55:07,610 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:55:07,611 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-29 05:55:07,612 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-29 05:55:07,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:55:07,618 INFO L85 PathProgramCache]: Analyzing trace with hash 162760247, now seen corresponding path program 1 times [2021-10-29 05:55:07,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:55:07,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102533591] [2021-10-29 05:55:07,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:55:07,632 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:55:07,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:55:08,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:55:08,055 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:55:08,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102533591] [2021-10-29 05:55:08,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102533591] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:55:08,057 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:55:08,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 05:55:08,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336477184] [2021-10-29 05:55:08,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:55:08,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:55:08,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:55:08,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:55:08,099 INFO L87 Difference]: Start difference. First operand has 49 states, 37 states have (on average 1.6756756756756757) internal successors, (62), 48 states have internal predecessors, (62), 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 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-10-29 05:55:08,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:55:08,284 INFO L93 Difference]: Finished difference Result 96 states and 124 transitions. [2021-10-29 05:55:08,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:55:08,286 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 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 [2021-10-29 05:55:08,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:55:08,300 INFO L225 Difference]: With dead ends: 96 [2021-10-29 05:55:08,300 INFO L226 Difference]: Without dead ends: 46 [2021-10-29 05:55:08,311 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:55:08,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-29 05:55:08,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2021-10-29 05:55:08,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 42 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:55:08,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2021-10-29 05:55:08,362 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 5 [2021-10-29 05:55:08,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:55:08,363 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2021-10-29 05:55:08,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-10-29 05:55:08,363 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2021-10-29 05:55:08,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-29 05:55:08,364 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:55:08,364 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:55:08,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:55:08,365 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-29 05:55:08,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:55:08,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1793930266, now seen corresponding path program 1 times [2021-10-29 05:55:08,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:55:08,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689421908] [2021-10-29 05:55:08,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:55:08,368 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:55:08,392 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 05:55:08,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [269782644] [2021-10-29 05:55:08,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:55:08,393 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:55:08,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:55:08,395 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:55:08,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 05:55:08,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:55:08,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 05:55:08,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:55:08,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:55:08,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:55:08,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:55:08,817 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:55:08,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689421908] [2021-10-29 05:55:08,818 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:55:08,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269782644] [2021-10-29 05:55:08,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269782644] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:55:08,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:55:08,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-29 05:55:08,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652075591] [2021-10-29 05:55:08,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:55:08,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:55:08,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:55:08,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:55:08,832 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:55:09,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:55:09,024 INFO L93 Difference]: Finished difference Result 85 states and 87 transitions. [2021-10-29 05:55:09,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:55:09,025 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-29 05:55:09,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:55:09,031 INFO L225 Difference]: With dead ends: 85 [2021-10-29 05:55:09,031 INFO L226 Difference]: Without dead ends: 83 [2021-10-29 05:55:09,035 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:55:09,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-10-29 05:55:09,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 48. [2021-10-29 05:55:09,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 47 states have internal predecessors, (50), 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) [2021-10-29 05:55:09,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2021-10-29 05:55:09,070 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 7 [2021-10-29 05:55:09,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:55:09,071 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2021-10-29 05:55:09,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:55:09,072 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2021-10-29 05:55:09,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 05:55:09,074 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:55:09,075 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:55:09,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:55:09,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-29 05:55:09,295 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-29 05:55:09,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:55:09,296 INFO L85 PathProgramCache]: Analyzing trace with hash -227354147, now seen corresponding path program 1 times [2021-10-29 05:55:09,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:55:09,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809659653] [2021-10-29 05:55:09,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:55:09,297 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:55:09,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:55:09,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:55:09,366 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:55:09,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809659653] [2021-10-29 05:55:09,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809659653] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:55:09,368 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:55:09,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 05:55:09,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597663442] [2021-10-29 05:55:09,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:55:09,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:55:09,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:55:09,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:55:09,372 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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) [2021-10-29 05:55:09,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:55:09,410 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions. [2021-10-29 05:55:09,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:55:09,411 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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 8 [2021-10-29 05:55:09,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:55:09,413 INFO L225 Difference]: With dead ends: 70 [2021-10-29 05:55:09,414 INFO L226 Difference]: Without dead ends: 48 [2021-10-29 05:55:09,415 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:55:09,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-10-29 05:55:09,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-10-29 05:55:09,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 47 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:55:09,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2021-10-29 05:55:09,442 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 8 [2021-10-29 05:55:09,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:55:09,443 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2021-10-29 05:55:09,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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) [2021-10-29 05:55:09,445 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2021-10-29 05:55:09,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 05:55:09,445 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:55:09,446 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:55:09,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-29 05:55:09,447 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-29 05:55:09,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:55:09,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1685255837, now seen corresponding path program 1 times [2021-10-29 05:55:09,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:55:09,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689758035] [2021-10-29 05:55:09,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:55:09,450 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:55:09,478 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 05:55:09,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1191556400] [2021-10-29 05:55:09,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:55:09,481 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:55:09,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:55:09,483 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:55:09,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-29 05:55:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:55:09,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 05:55:09,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:55:09,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:55:09,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:55:09,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:55:09,701 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:55:09,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689758035] [2021-10-29 05:55:09,701 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:55:09,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191556400] [2021-10-29 05:55:09,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191556400] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:55:09,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:55:09,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-29 05:55:09,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931550157] [2021-10-29 05:55:09,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:55:09,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:55:09,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:55:09,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:55:09,705 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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) [2021-10-29 05:55:09,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:55:09,831 INFO L93 Difference]: Finished difference Result 83 states and 84 transitions. [2021-10-29 05:55:09,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:55:09,832 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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 9 [2021-10-29 05:55:09,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:55:09,833 INFO L225 Difference]: With dead ends: 83 [2021-10-29 05:55:09,833 INFO L226 Difference]: Without dead ends: 79 [2021-10-29 05:55:09,834 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:55:09,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-10-29 05:55:09,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 59. [2021-10-29 05:55:09,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 50 states have (on average 1.26) internal successors, (63), 58 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:55:09,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2021-10-29 05:55:09,845 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 9 [2021-10-29 05:55:09,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:55:09,845 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2021-10-29 05:55:09,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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) [2021-10-29 05:55:09,846 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2021-10-29 05:55:09,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 05:55:09,846 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:55:09,847 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:55:09,880 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-10-29 05:55:10,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:55:10,067 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-29 05:55:10,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:55:10,068 INFO L85 PathProgramCache]: Analyzing trace with hash 328345024, now seen corresponding path program 1 times [2021-10-29 05:55:10,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:55:10,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679842061] [2021-10-29 05:55:10,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:55:10,068 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:55:10,086 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 05:55:10,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [867752219] [2021-10-29 05:55:10,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:55:10,087 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:55:10,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:55:10,088 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:55:10,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-29 05:55:10,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:55:10,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-29 05:55:10,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:55:10,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:55:10,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:55:10,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:55:10,547 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:55:10,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679842061] [2021-10-29 05:55:10,550 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:55:10,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867752219] [2021-10-29 05:55:10,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867752219] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:55:10,551 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:55:10,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-29 05:55:10,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251515908] [2021-10-29 05:55:10,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:55:10,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:55:10,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:55:10,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:55:10,554 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:55:11,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:55:11,278 INFO L93 Difference]: Finished difference Result 118 states and 122 transitions. [2021-10-29 05:55:11,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:55:11,279 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-29 05:55:11,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:55:11,280 INFO L225 Difference]: With dead ends: 118 [2021-10-29 05:55:11,281 INFO L226 Difference]: Without dead ends: 92 [2021-10-29 05:55:11,281 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:55:11,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-29 05:55:11,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 77. [2021-10-29 05:55:11,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 68 states have (on average 1.2647058823529411) internal successors, (86), 76 states have internal predecessors, (86), 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) [2021-10-29 05:55:11,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2021-10-29 05:55:11,296 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 11 [2021-10-29 05:55:11,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:55:11,297 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2021-10-29 05:55:11,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:55:11,297 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2021-10-29 05:55:11,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-29 05:55:11,298 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:55:11,298 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:55:11,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-29 05:55:11,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:55:11,527 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-29 05:55:11,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:55:11,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1757696914, now seen corresponding path program 1 times [2021-10-29 05:55:11,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:55:11,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343086690] [2021-10-29 05:55:11,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:55:11,528 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:55:11,560 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 05:55:11,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1956033611] [2021-10-29 05:55:11,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:55:11,561 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:55:11,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:55:11,579 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:55:11,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-29 05:55:11,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:55:11,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-29 05:55:11,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:55:11,899 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:55:11,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:55:12,020 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:55:12,020 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:55:12,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343086690] [2021-10-29 05:55:12,021 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:55:12,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956033611] [2021-10-29 05:55:12,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956033611] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:55:12,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [949410967] [2021-10-29 05:55:12,048 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-10-29 05:55:12,049 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:55:12,055 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 05:55:12,061 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 05:55:12,062 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 05:55:12,110 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:12,119 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:55:12,121 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:12,122 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-29 05:55:12,125 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:55:12,126 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:12,127 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 05:55:12,170 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-10-29 05:55:12,202 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_9|], 21=[|v_#valid_10|]} [2021-10-29 05:55:12,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:12,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:12,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:12,256 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 [2021-10-29 05:55:12,257 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:12,258 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:55:12,259 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:12,259 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:55:12,260 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:55:12,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:12,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:12,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:12,288 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 [2021-10-29 05:55:12,289 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:12,290 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:55:12,291 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:12,292 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:55:12,292 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:55:12,294 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:12,360 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:12,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:12,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:12,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:12,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:12,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:12,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:12,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:12,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:12,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:12,404 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 [2021-10-29 05:55:12,405 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:12,408 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:55:12,409 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:12,410 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:55:12,410 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-29 05:55:12,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:12,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:12,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:12,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:12,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:12,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:12,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:12,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:12,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:12,445 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 [2021-10-29 05:55:12,446 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:12,449 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:55:12,450 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:12,451 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:55:12,451 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-29 05:55:12,452 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:12,478 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:12,483 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:12,493 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 251 [2021-10-29 05:55:12,494 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-10-29 05:55:12,495 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:301, output treesize:251 [2021-10-29 05:55:12,504 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:12,520 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 257 [2021-10-29 05:55:12,529 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:12,554 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 286 [2021-10-29 05:55:12,569 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:12,587 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 303 [2021-10-29 05:55:12,598 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:12,618 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 305 [2021-10-29 05:55:12,641 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:12,662 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 329 [2021-10-29 05:55:12,678 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:12,696 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 339 [2021-10-29 05:55:12,714 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:12,749 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 512 [2021-10-29 05:55:12,767 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:12,870 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:12,873 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:12,875 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:12,877 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:12,881 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:12,884 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:12,886 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:12,929 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:12,942 INFO L180 QuantifierPusher]: treesize reduction 30, result has 66.7 percent of original size [2021-10-29 05:55:12,945 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-10-29 05:55:12,949 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:12,955 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-10-29 05:55:12,959 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:12,970 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-10-29 05:55:12,975 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:12,984 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-10-29 05:55:12,989 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:12,998 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-10-29 05:55:13,003 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:13,012 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-10-29 05:55:13,017 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:13,029 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 257 [2021-10-29 05:55:13,038 INFO L180 QuantifierPusher]: treesize reduction 30, result has 66.7 percent of original size [2021-10-29 05:55:13,041 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-10-29 05:55:13,045 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:13,051 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-10-29 05:55:13,058 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:13,067 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-10-29 05:55:13,076 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:13,082 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-10-29 05:55:13,091 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:13,098 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-10-29 05:55:13,115 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:13,129 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-10-29 05:55:13,136 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 05:55:14,655 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:55:14,656 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 05:55:14,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-10-29 05:55:14,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748490359] [2021-10-29 05:55:14,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 05:55:14,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:55:14,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 05:55:14,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-10-29 05:55:14,658 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:55:17,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:55:17,332 INFO L93 Difference]: Finished difference Result 85 states and 90 transitions. [2021-10-29 05:55:17,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 05:55:17,333 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-29 05:55:17,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:55:17,334 INFO L225 Difference]: With dead ends: 85 [2021-10-29 05:55:17,334 INFO L226 Difference]: Without dead ends: 77 [2021-10-29 05:55:17,335 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2021-10-29 05:55:17,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-10-29 05:55:17,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 69. [2021-10-29 05:55:17,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 63 states have (on average 1.1904761904761905) internal successors, (75), 68 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:55:17,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2021-10-29 05:55:17,349 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 19 [2021-10-29 05:55:17,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:55:17,350 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2021-10-29 05:55:17,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:55:17,350 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2021-10-29 05:55:17,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-29 05:55:17,351 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:55:17,352 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:55:17,446 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-10-29 05:55:17,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:55:17,552 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-29 05:55:17,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:55:17,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1350588059, now seen corresponding path program 1 times [2021-10-29 05:55:17,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:55:17,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919370380] [2021-10-29 05:55:17,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:55:17,554 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:55:17,568 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 05:55:17,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1992685772] [2021-10-29 05:55:17,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:55:17,582 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:55:17,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:55:17,583 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:55:17,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-29 05:55:17,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:55:17,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-29 05:55:17,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:55:17,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:55:17,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:55:17,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:55:17,925 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:55:17,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919370380] [2021-10-29 05:55:17,925 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:55:17,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992685772] [2021-10-29 05:55:17,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992685772] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:55:17,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1710322418] [2021-10-29 05:55:17,930 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2021-10-29 05:55:17,930 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:55:17,931 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 05:55:17,932 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 05:55:17,932 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 05:55:17,959 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:17,960 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:55:17,961 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:17,962 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-29 05:55:17,980 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:55:17,981 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:17,981 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 05:55:17,984 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-10-29 05:55:18,003 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_10|], 21=[|v_#valid_11|]} [2021-10-29 05:55:18,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:18,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:18,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:18,025 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 [2021-10-29 05:55:18,026 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:18,026 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:55:18,027 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:18,028 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:55:18,028 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:55:18,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:18,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:18,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:18,051 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 [2021-10-29 05:55:18,052 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:18,054 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:55:18,055 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:18,056 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:55:18,056 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:55:18,057 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:18,073 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:18,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:18,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:18,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:18,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:18,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:18,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:18,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:18,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:18,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:18,113 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 [2021-10-29 05:55:18,114 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:18,117 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:55:18,118 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:18,120 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:55:18,121 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-29 05:55:18,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:18,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:18,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:18,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:18,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:18,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:18,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:18,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:18,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:18,159 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 [2021-10-29 05:55:18,160 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:18,163 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:55:18,163 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:18,164 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:55:18,164 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-29 05:55:18,167 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:18,184 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:18,188 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:18,192 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 251 [2021-10-29 05:55:18,193 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-10-29 05:55:18,193 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:301, output treesize:251 [2021-10-29 05:55:18,199 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:18,207 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 257 [2021-10-29 05:55:18,213 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:18,222 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 286 [2021-10-29 05:55:18,229 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:18,241 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 303 [2021-10-29 05:55:18,248 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:18,259 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 305 [2021-10-29 05:55:18,267 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:18,276 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 329 [2021-10-29 05:55:18,284 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:18,300 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 339 [2021-10-29 05:55:18,308 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:18,321 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 418 [2021-10-29 05:55:18,330 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:18,372 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:18,374 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:18,375 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:18,378 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:18,380 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:18,381 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:18,382 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:18,393 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:18,401 INFO L180 QuantifierPusher]: treesize reduction 30, result has 66.7 percent of original size [2021-10-29 05:55:18,404 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-10-29 05:55:18,406 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:18,409 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-10-29 05:55:18,413 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:18,419 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-10-29 05:55:18,423 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:18,429 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-10-29 05:55:18,433 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:18,439 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-10-29 05:55:18,443 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:18,449 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-10-29 05:55:18,454 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:18,474 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 381 [2021-10-29 05:55:18,482 INFO L180 QuantifierPusher]: treesize reduction 30, result has 66.7 percent of original size [2021-10-29 05:55:18,484 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-10-29 05:55:18,487 INFO L180 QuantifierPusher]: treesize reduction 4, result has 93.4 percent of original size [2021-10-29 05:55:18,489 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-10-29 05:55:18,496 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:18,501 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-29 05:55:18,669 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:18,673 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-10-29 05:55:18,679 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:18,685 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-10-29 05:55:18,692 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:18,698 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-10-29 05:55:18,706 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:18,711 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-10-29 05:55:18,719 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:18,725 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-10-29 05:55:18,731 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 05:55:27,968 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:55:27,968 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 05:55:27,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-29 05:55:27,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77951054] [2021-10-29 05:55:27,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 05:55:27,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:55:27,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 05:55:27,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2021-10-29 05:55:27,971 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:55:28,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:55:28,046 INFO L93 Difference]: Finished difference Result 143 states and 148 transitions. [2021-10-29 05:55:28,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-29 05:55:28,047 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-29 05:55:28,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:55:28,048 INFO L225 Difference]: With dead ends: 143 [2021-10-29 05:55:28,049 INFO L226 Difference]: Without dead ends: 115 [2021-10-29 05:55:28,050 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2021-10-29 05:55:28,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-10-29 05:55:28,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 83. [2021-10-29 05:55:28,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 77 states have (on average 1.1818181818181819) internal successors, (91), 82 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:55:28,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2021-10-29 05:55:28,066 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 20 [2021-10-29 05:55:28,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:55:28,067 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2021-10-29 05:55:28,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:55:28,068 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2021-10-29 05:55:28,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-29 05:55:28,068 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:55:28,069 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:55:28,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-29 05:55:28,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-29 05:55:28,295 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-29 05:55:28,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:55:28,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1224742933, now seen corresponding path program 1 times [2021-10-29 05:55:28,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:55:28,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844797120] [2021-10-29 05:55:28,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:55:28,296 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:55:28,314 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 05:55:28,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1303227427] [2021-10-29 05:55:28,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:55:28,315 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:55:28,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:55:28,316 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:55:28,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-29 05:55:28,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:55:28,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-29 05:55:28,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:55:28,683 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:55:28,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:55:28,809 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:55:28,810 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:55:28,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844797120] [2021-10-29 05:55:28,810 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:55:28,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303227427] [2021-10-29 05:55:28,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303227427] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:55:28,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1809785338] [2021-10-29 05:55:28,816 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-10-29 05:55:28,816 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:55:28,816 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 05:55:28,817 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 05:55:28,817 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 05:55:28,829 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:28,830 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:55:28,831 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:28,832 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 05:55:28,832 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:55:28,833 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:28,834 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-29 05:55:28,850 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-10-29 05:55:28,861 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_11|], 21=[|v_#valid_12|]} [2021-10-29 05:55:28,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:28,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:28,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:28,890 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 [2021-10-29 05:55:28,891 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:28,891 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:55:28,892 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:28,893 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:55:28,893 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:55:28,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:28,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:28,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:28,920 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 [2021-10-29 05:55:28,923 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:28,924 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:55:28,925 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:28,926 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:55:28,926 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:55:28,927 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:28,943 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:28,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:28,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:28,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:28,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:28,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:28,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:28,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:28,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:28,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:28,996 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 [2021-10-29 05:55:28,997 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:28,999 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:55:29,000 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:29,001 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:55:29,001 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-29 05:55:29,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:29,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:29,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:29,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:29,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:29,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:29,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:29,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:29,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:29,030 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 [2021-10-29 05:55:29,031 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:29,033 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:55:29,034 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:29,035 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:55:29,035 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-29 05:55:29,036 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:29,050 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:29,054 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:29,058 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 251 [2021-10-29 05:55:29,059 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-10-29 05:55:29,059 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:301, output treesize:251 [2021-10-29 05:55:29,064 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:29,071 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 257 [2021-10-29 05:55:29,076 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:29,084 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 286 [2021-10-29 05:55:29,090 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:29,096 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 303 [2021-10-29 05:55:29,103 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:29,110 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 305 [2021-10-29 05:55:29,116 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:29,123 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 329 [2021-10-29 05:55:29,130 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:29,137 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 339 [2021-10-29 05:55:29,144 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:29,156 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 427 [2021-10-29 05:55:29,164 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:29,198 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:29,199 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:29,201 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:29,202 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:29,203 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:29,205 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:29,206 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:29,213 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:29,221 INFO L180 QuantifierPusher]: treesize reduction 30, result has 66.7 percent of original size [2021-10-29 05:55:29,222 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-10-29 05:55:29,225 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:29,227 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-10-29 05:55:29,230 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:29,235 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-10-29 05:55:29,238 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:29,242 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-10-29 05:55:29,246 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:29,251 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-10-29 05:55:29,255 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:29,260 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-10-29 05:55:29,264 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:29,272 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 340 [2021-10-29 05:55:29,279 INFO L180 QuantifierPusher]: treesize reduction 30, result has 66.7 percent of original size [2021-10-29 05:55:29,281 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-10-29 05:55:29,284 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:29,287 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-10-29 05:55:29,292 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:29,296 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-10-29 05:55:29,303 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:29,307 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-10-29 05:55:29,315 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:29,320 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-10-29 05:55:29,327 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:29,333 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-10-29 05:55:29,339 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 05:55:30,802 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:55:30,802 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 05:55:30,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-10-29 05:55:30,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056966427] [2021-10-29 05:55:30,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 05:55:30,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:55:30,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 05:55:30,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-10-29 05:55:30,804 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:55:30,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:55:30,970 INFO L93 Difference]: Finished difference Result 91 states and 95 transitions. [2021-10-29 05:55:30,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:55:30,971 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-29 05:55:30,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:55:30,972 INFO L225 Difference]: With dead ends: 91 [2021-10-29 05:55:30,972 INFO L226 Difference]: Without dead ends: 89 [2021-10-29 05:55:30,973 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 42 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-10-29 05:55:30,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-10-29 05:55:30,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 83. [2021-10-29 05:55:30,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 77 states have (on average 1.1688311688311688) internal successors, (90), 82 states have internal predecessors, (90), 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) [2021-10-29 05:55:30,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 90 transitions. [2021-10-29 05:55:30,997 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 90 transitions. Word has length 21 [2021-10-29 05:55:30,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:55:30,997 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 90 transitions. [2021-10-29 05:55:30,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:55:30,998 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 90 transitions. [2021-10-29 05:55:30,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-29 05:55:30,999 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:55:30,999 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:55:31,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-29 05:55:31,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable29 [2021-10-29 05:55:31,215 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-29 05:55:31,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:55:31,215 INFO L85 PathProgramCache]: Analyzing trace with hash -2066530638, now seen corresponding path program 1 times [2021-10-29 05:55:31,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:55:31,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221712191] [2021-10-29 05:55:31,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:55:31,216 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:55:31,237 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 05:55:31,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [604083065] [2021-10-29 05:55:31,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:55:31,245 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:55:31,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:55:31,247 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:55:31,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-29 05:55:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:55:31,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-29 05:55:31,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:55:31,971 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:55:31,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:55:32,605 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:55:32,606 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:55:32,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221712191] [2021-10-29 05:55:32,606 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:55:32,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604083065] [2021-10-29 05:55:32,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604083065] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:55:32,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1187449198] [2021-10-29 05:55:32,610 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2021-10-29 05:55:32,610 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:55:32,610 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 05:55:32,611 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 05:55:32,611 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 05:55:32,619 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:32,620 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:55:32,621 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:32,622 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-29 05:55:32,622 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:55:32,623 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:32,623 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 05:55:32,633 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-10-29 05:55:32,638 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_12|], 21=[|v_#valid_13|]} [2021-10-29 05:55:32,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:32,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:32,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:32,658 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 [2021-10-29 05:55:32,659 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:32,660 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:55:32,660 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:32,661 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:55:32,661 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:55:32,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:32,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:32,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:32,683 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 [2021-10-29 05:55:32,684 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:32,685 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:55:32,685 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:32,686 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:55:32,686 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:55:32,687 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:32,703 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:32,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:32,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:32,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:32,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:32,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:32,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:32,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:32,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:32,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:32,743 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 [2021-10-29 05:55:32,744 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:32,747 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:55:32,747 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:32,748 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:55:32,748 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-29 05:55:32,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:32,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:32,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:32,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:32,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:32,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:32,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:32,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:32,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:32,779 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 [2021-10-29 05:55:32,779 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:32,782 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:55:32,783 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:32,784 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:55:32,784 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-29 05:55:32,785 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:32,800 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:32,804 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:32,807 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 251 [2021-10-29 05:55:32,808 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-10-29 05:55:32,809 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:301, output treesize:251 [2021-10-29 05:55:32,813 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:32,820 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 257 [2021-10-29 05:55:32,826 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:32,833 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 286 [2021-10-29 05:55:32,839 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:32,845 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 303 [2021-10-29 05:55:32,851 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:32,857 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 305 [2021-10-29 05:55:32,864 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:32,870 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 329 [2021-10-29 05:55:32,876 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:32,883 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 339 [2021-10-29 05:55:32,889 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:32,902 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 517 [2021-10-29 05:55:32,916 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:32,978 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:32,979 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:32,981 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:32,982 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:32,984 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:32,985 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:32,986 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:32,996 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:33,003 INFO L180 QuantifierPusher]: treesize reduction 30, result has 66.7 percent of original size [2021-10-29 05:55:33,005 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-10-29 05:55:33,007 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:33,009 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-10-29 05:55:33,016 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:33,020 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-10-29 05:55:33,023 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:33,028 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-10-29 05:55:33,034 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:33,038 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-10-29 05:55:33,042 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:33,047 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-10-29 05:55:33,050 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:33,057 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 247 [2021-10-29 05:55:33,065 INFO L180 QuantifierPusher]: treesize reduction 30, result has 66.7 percent of original size [2021-10-29 05:55:33,067 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-10-29 05:55:33,070 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:33,073 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-10-29 05:55:33,078 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:33,089 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-10-29 05:55:33,095 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:33,099 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-10-29 05:55:33,106 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:33,110 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-10-29 05:55:33,115 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:33,121 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-10-29 05:55:33,133 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:33,138 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-10-29 05:55:33,146 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:33,151 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 157 [2021-10-29 05:55:33,159 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 05:55:36,811 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:55:36,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 05:55:36,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-29 05:55:36,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032073207] [2021-10-29 05:55:36,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-29 05:55:36,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:55:36,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-29 05:55:36,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-10-29 05:55:36,815 INFO L87 Difference]: Start difference. First operand 83 states and 90 transitions. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 states have internal predecessors, (58), 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) [2021-10-29 05:55:38,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:55:38,154 INFO L93 Difference]: Finished difference Result 111 states and 113 transitions. [2021-10-29 05:55:38,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-29 05:55:38,155 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 states have internal predecessors, (58), 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 30 [2021-10-29 05:55:38,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:55:38,156 INFO L225 Difference]: With dead ends: 111 [2021-10-29 05:55:38,156 INFO L226 Difference]: Without dead ends: 109 [2021-10-29 05:55:38,157 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 59 SyntacticMatches, 11 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=127, Invalid=523, Unknown=0, NotChecked=0, Total=650 [2021-10-29 05:55:38,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-10-29 05:55:38,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 87. [2021-10-29 05:55:38,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 81 states have (on average 1.1481481481481481) internal successors, (93), 86 states have internal predecessors, (93), 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) [2021-10-29 05:55:38,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 93 transitions. [2021-10-29 05:55:38,172 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 93 transitions. Word has length 30 [2021-10-29 05:55:38,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:55:38,173 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 93 transitions. [2021-10-29 05:55:38,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 states have internal predecessors, (58), 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) [2021-10-29 05:55:38,173 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 93 transitions. [2021-10-29 05:55:38,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-29 05:55:38,175 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:55:38,175 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:55:38,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-29 05:55:38,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:55:38,391 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-29 05:55:38,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:55:38,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1660894443, now seen corresponding path program 1 times [2021-10-29 05:55:38,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:55:38,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892400204] [2021-10-29 05:55:38,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:55:38,392 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:55:38,423 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 05:55:38,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [773494344] [2021-10-29 05:55:38,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:55:38,424 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:55:38,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:55:38,426 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:55:38,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-29 05:55:38,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:55:38,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-29 05:55:38,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:55:39,260 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:55:39,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:55:39,822 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:55:39,822 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:55:39,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892400204] [2021-10-29 05:55:39,823 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:55:39,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773494344] [2021-10-29 05:55:39,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773494344] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:55:39,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [433169178] [2021-10-29 05:55:39,830 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2021-10-29 05:55:39,830 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:55:39,831 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 05:55:39,831 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 05:55:39,832 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 05:55:39,842 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:39,843 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:55:39,843 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:39,844 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 05:55:39,845 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:55:39,846 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:39,846 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-29 05:55:39,857 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-10-29 05:55:39,862 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_13|], 21=[|v_#valid_14|]} [2021-10-29 05:55:39,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:39,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:39,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:39,889 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 [2021-10-29 05:55:39,890 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:39,890 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:55:39,891 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:39,892 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:55:39,892 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:55:39,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:39,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:39,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:39,924 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 [2021-10-29 05:55:39,925 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:39,925 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:55:39,926 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:39,927 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:55:39,927 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:55:39,928 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:39,950 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:39,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:39,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:39,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:39,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:39,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:39,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:39,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:39,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:39,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:39,989 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 [2021-10-29 05:55:39,990 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:39,995 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:55:39,995 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:39,996 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:55:39,996 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-29 05:55:40,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:40,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:40,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:40,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:40,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:40,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:40,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:40,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:40,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:55:40,030 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 [2021-10-29 05:55:40,031 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:40,033 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:55:40,034 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:40,035 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:55:40,035 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-29 05:55:40,036 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:40,054 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:40,058 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:40,061 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 251 [2021-10-29 05:55:40,062 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-10-29 05:55:40,062 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:301, output treesize:251 [2021-10-29 05:55:40,070 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:40,077 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 257 [2021-10-29 05:55:40,082 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:40,089 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 286 [2021-10-29 05:55:40,097 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:40,103 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 303 [2021-10-29 05:55:40,109 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:40,115 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 305 [2021-10-29 05:55:40,121 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:40,149 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 329 [2021-10-29 05:55:40,158 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:40,165 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 339 [2021-10-29 05:55:40,173 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:40,189 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 477 [2021-10-29 05:55:40,197 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:40,246 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:40,248 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:40,249 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:40,251 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:40,252 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:40,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:40,255 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:40,265 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:55:40,273 INFO L180 QuantifierPusher]: treesize reduction 30, result has 66.7 percent of original size [2021-10-29 05:55:40,275 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-10-29 05:55:40,277 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:40,279 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-10-29 05:55:40,282 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:40,287 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-10-29 05:55:40,290 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:40,295 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-10-29 05:55:40,298 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:40,303 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-10-29 05:55:40,308 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:40,313 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-10-29 05:55:40,317 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:40,323 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 247 [2021-10-29 05:55:40,330 INFO L180 QuantifierPusher]: treesize reduction 30, result has 66.7 percent of original size [2021-10-29 05:55:40,332 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-10-29 05:55:40,335 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:40,337 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-10-29 05:55:40,343 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:40,347 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-10-29 05:55:40,353 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:40,357 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-10-29 05:55:40,363 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:40,368 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-10-29 05:55:40,374 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:40,379 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-10-29 05:55:40,390 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:40,401 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-10-29 05:55:40,409 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:40,414 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 157 [2021-10-29 05:55:40,423 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:55:40,428 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 170 [2021-10-29 05:55:40,444 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 05:55:43,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [433169178] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:55:43,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-29 05:55:43,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [5, 5] total 19 [2021-10-29 05:55:43,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062687510] [2021-10-29 05:55:43,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-29 05:55:43,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:55:43,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-29 05:55:43,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2021-10-29 05:55:43,483 INFO L87 Difference]: Start difference. First operand 87 states and 93 transitions. Second operand has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:55:44,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:55:44,240 INFO L93 Difference]: Finished difference Result 107 states and 112 transitions. [2021-10-29 05:55:44,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-29 05:55:44,241 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-29 05:55:44,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:55:44,242 INFO L225 Difference]: With dead ends: 107 [2021-10-29 05:55:44,242 INFO L226 Difference]: Without dead ends: 79 [2021-10-29 05:55:44,243 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 64 SyntacticMatches, 12 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2021-10-29 05:55:44,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-10-29 05:55:44,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2021-10-29 05:55:44,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 72 states have (on average 1.0972222222222223) internal successors, (79), 76 states have internal predecessors, (79), 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) [2021-10-29 05:55:44,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2021-10-29 05:55:44,263 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 32 [2021-10-29 05:55:44,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:55:44,264 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2021-10-29 05:55:44,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:55:44,264 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2021-10-29 05:55:44,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-29 05:55:44,266 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:55:44,266 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2021-10-29 05:55:44,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-29 05:55:44,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:55:44,495 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-29 05:55:44,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:55:44,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1934542221, now seen corresponding path program 2 times [2021-10-29 05:55:44,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:55:44,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53733635] [2021-10-29 05:55:44,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:55:44,495 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:55:44,507 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 05:55:44,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [148939785] [2021-10-29 05:55:44,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 05:55:44,521 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:55:44,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:55:44,522 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:55:44,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-29 05:55:44,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-29 05:55:44,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 05:55:44,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-29 05:55:44,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:56:35,398 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-29 05:56:35,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:57:38,924 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-29 05:57:38,924 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:57:38,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53733635] [2021-10-29 05:57:38,926 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:57:38,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148939785] [2021-10-29 05:57:38,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148939785] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-29 05:57:38,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-29 05:57:38,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 21 [2021-10-29 05:57:38,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212467887] [2021-10-29 05:57:38,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-29 05:57:38,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:57:38,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-29 05:57:38,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=314, Unknown=26, NotChecked=0, Total=420 [2021-10-29 05:57:38,929 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 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) [2021-10-29 05:58:04,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:58:04,520 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2021-10-29 05:58:04,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-29 05:58:04,521 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-29 05:58:04,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:58:04,522 INFO L225 Difference]: With dead ends: 79 [2021-10-29 05:58:04,522 INFO L226 Difference]: Without dead ends: 77 [2021-10-29 05:58:04,523 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 122.4s TimeCoverageRelationStatistics Valid=130, Invalid=491, Unknown=29, NotChecked=0, Total=650 [2021-10-29 05:58:04,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-10-29 05:58:04,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2021-10-29 05:58:04,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 74 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:58:04,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2021-10-29 05:58:04,544 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 33 [2021-10-29 05:58:04,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:58:04,544 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2021-10-29 05:58:04,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 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) [2021-10-29 05:58:04,545 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2021-10-29 05:58:04,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-29 05:58:04,547 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:58:04,547 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:58:04,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-29 05:58:04,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-10-29 05:58:04,755 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-29 05:58:04,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:58:04,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1771887166, now seen corresponding path program 2 times [2021-10-29 05:58:04,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:58:04,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010175823] [2021-10-29 05:58:04,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:58:04,756 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:58:04,779 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 05:58:04,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1279226801] [2021-10-29 05:58:04,780 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 05:58:04,780 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:58:04,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:58:04,786 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:58:04,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-29 05:58:06,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-29 05:58:06,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 05:58:06,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 60 conjunts are in the unsatisfiable core [2021-10-29 05:58:06,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:59:02,640 WARN L207 SmtUtils]: Spent 19.20 s on a formula simplification that was a NOOP. DAG size: 84 [2021-10-29 05:59:21,870 WARN L207 SmtUtils]: Spent 6.14 s on a formula simplification that was a NOOP. DAG size: 77 [2021-10-29 06:00:35,943 WARN L207 SmtUtils]: Spent 5.09 s on a formula simplification. DAG size of input: 3 DAG size of output: 1 [2021-10-29 06:00:38,191 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-29 06:00:38,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:00:58,331 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-10-29 06:00:58,331 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:00:58,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010175823] [2021-10-29 06:00:58,332 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 06:00:58,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279226801] [2021-10-29 06:00:58,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279226801] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-29 06:00:58,332 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-29 06:00:58,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [19] total 29 [2021-10-29 06:00:58,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723132635] [2021-10-29 06:00:58,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-29 06:00:58,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:00:58,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-29 06:00:58,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=578, Unknown=31, NotChecked=0, Total=812 [2021-10-29 06:00:58,334 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 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) [2021-10-29 06:01:02,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:02,312 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2021-10-29 06:01:02,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 06:01:02,313 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-10-29 06:01:02,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:02,314 INFO L225 Difference]: With dead ends: 77 [2021-10-29 06:01:02,314 INFO L226 Difference]: Without dead ends: 71 [2021-10-29 06:01:02,314 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 122.1s TimeCoverageRelationStatistics Valid=244, Invalid=717, Unknown=31, NotChecked=0, Total=992 [2021-10-29 06:01:02,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-10-29 06:01:02,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-10-29 06:01:02,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 67 states have (on average 1.0597014925373134) internal successors, (71), 70 states have internal predecessors, (71), 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) [2021-10-29 06:01:02,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2021-10-29 06:01:02,333 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 54 [2021-10-29 06:01:02,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:02,334 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2021-10-29 06:01:02,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 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) [2021-10-29 06:01:02,334 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2021-10-29 06:01:02,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-29 06:01:02,335 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:02,335 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:01:02,346 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-10-29 06:01:02,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-10-29 06:01:02,539 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-29 06:01:02,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:02,539 INFO L85 PathProgramCache]: Analyzing trace with hash -811872259, now seen corresponding path program 2 times [2021-10-29 06:01:02,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:02,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857155922] [2021-10-29 06:01:02,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:02,540 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:02,580 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 06:01:02,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [107131127] [2021-10-29 06:01:02,581 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 06:01:02,581 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 06:01:02,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 06:01:02,583 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 06:01:02,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-29 06:01:03,191 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-29 06:01:03,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 06:01:03,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-29 06:01:03,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:01:03,428 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:03,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:01:03,697 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:03,697 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:03,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857155922] [2021-10-29 06:01:03,697 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 06:01:03,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107131127] [2021-10-29 06:01:03,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107131127] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 06:01:03,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [752684105] [2021-10-29 06:01:03,700 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2021-10-29 06:01:03,700 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 06:01:03,700 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 06:01:03,700 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 06:01:03,701 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 06:01:03,725 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:03,725 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:03,726 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:03,727 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 06:01:03,727 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:03,728 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:03,729 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-29 06:01:03,739 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-10-29 06:01:03,743 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_14|], 21=[|v_#valid_15|]} [2021-10-29 06:01:03,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:03,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:03,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:03,770 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 [2021-10-29 06:01:03,770 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:03,771 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 06:01:03,771 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:03,772 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 06:01:03,772 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 06:01:03,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:03,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:03,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:03,796 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 [2021-10-29 06:01:03,796 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:03,797 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 06:01:03,797 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:03,798 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 06:01:03,798 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 06:01:03,798 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:01:03,809 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:03,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:03,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:03,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:03,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:03,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:03,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:03,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:03,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:03,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:03,863 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 [2021-10-29 06:01:03,864 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:03,867 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 06:01:03,867 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:03,868 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 06:01:03,868 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-29 06:01:03,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:03,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:03,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:03,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:03,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:03,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:03,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:03,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:03,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:03,905 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 [2021-10-29 06:01:03,905 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:03,909 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 06:01:03,910 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:03,911 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 06:01:03,911 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-29 06:01:03,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:01:03,925 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:03,928 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:03,931 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 251 [2021-10-29 06:01:03,932 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-10-29 06:01:03,932 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:301, output treesize:251 [2021-10-29 06:01:03,937 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:03,957 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 257 [2021-10-29 06:01:03,963 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:03,968 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 286 [2021-10-29 06:01:03,972 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:03,976 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 303 [2021-10-29 06:01:03,979 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:03,983 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 305 [2021-10-29 06:01:03,987 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:03,991 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 329 [2021-10-29 06:01:03,995 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:04,008 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 339 [2021-10-29 06:01:04,013 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:04,019 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 485 [2021-10-29 06:01:04,030 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:01:04,066 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:01:04,068 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:01:04,069 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:01:04,070 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:01:04,071 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:01:04,073 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:01:04,074 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:01:04,085 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:01:04,092 INFO L180 QuantifierPusher]: treesize reduction 30, result has 66.7 percent of original size [2021-10-29 06:01:04,093 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-10-29 06:01:04,095 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:04,097 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-10-29 06:01:04,100 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:04,104 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-10-29 06:01:04,107 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:04,111 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-10-29 06:01:04,114 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:04,118 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-10-29 06:01:04,122 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:04,128 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-10-29 06:01:04,131 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:04,137 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 236 [2021-10-29 06:01:04,143 INFO L180 QuantifierPusher]: treesize reduction 30, result has 66.7 percent of original size [2021-10-29 06:01:04,144 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-10-29 06:01:04,146 INFO L180 QuantifierPusher]: treesize reduction 4, result has 93.4 percent of original size [2021-10-29 06:01:04,150 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-10-29 06:01:04,155 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:04,159 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-29 06:01:04,329 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:04,330 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-10-29 06:01:04,335 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:04,337 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-10-29 06:01:04,342 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:04,345 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-10-29 06:01:04,351 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:04,354 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-10-29 06:01:04,361 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:04,364 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-10-29 06:01:04,368 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 06:01:14,970 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 06:01:14,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 06:01:14,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-29 06:01:14,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323209097] [2021-10-29 06:01:14,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-29 06:01:14,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:14,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-29 06:01:14,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2021-10-29 06:01:14,973 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 13 states have internal predecessors, (107), 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) [2021-10-29 06:01:15,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:15,216 INFO L93 Difference]: Finished difference Result 163 states and 168 transitions. [2021-10-29 06:01:15,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-29 06:01:15,217 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 13 states have internal predecessors, (107), 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 56 [2021-10-29 06:01:15,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:15,219 INFO L225 Difference]: With dead ends: 163 [2021-10-29 06:01:15,219 INFO L226 Difference]: Without dead ends: 143 [2021-10-29 06:01:15,220 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 125 SyntacticMatches, 16 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=237, Invalid=1023, Unknown=0, NotChecked=0, Total=1260 [2021-10-29 06:01:15,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-10-29 06:01:15,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2021-10-29 06:01:15,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 139 states have (on average 1.0287769784172662) internal successors, (143), 142 states have internal predecessors, (143), 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) [2021-10-29 06:01:15,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2021-10-29 06:01:15,261 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 56 [2021-10-29 06:01:15,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:15,262 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2021-10-29 06:01:15,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 13 states have internal predecessors, (107), 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) [2021-10-29 06:01:15,262 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2021-10-29 06:01:15,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-10-29 06:01:15,265 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:15,265 INFO L513 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:01:15,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-29 06:01:15,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 06:01:15,478 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-29 06:01:15,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:15,479 INFO L85 PathProgramCache]: Analyzing trace with hash -29763283, now seen corresponding path program 3 times [2021-10-29 06:01:15,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:15,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889770307] [2021-10-29 06:01:15,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:15,480 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:15,514 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 06:01:15,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [228774165] [2021-10-29 06:01:15,515 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-29 06:01:15,516 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 06:01:15,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 06:01:15,517 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 06:01:15,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-29 06:01:16,240 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-29 06:01:16,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 06:01:16,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-29 06:01:16,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:01:16,870 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 0 proven. 560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:16,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:01:17,581 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 0 proven. 560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:17,581 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:17,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889770307] [2021-10-29 06:01:17,582 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 06:01:17,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228774165] [2021-10-29 06:01:17,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228774165] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 06:01:17,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2126346458] [2021-10-29 06:01:17,584 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2021-10-29 06:01:17,585 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 06:01:17,585 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 06:01:17,585 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 06:01:17,586 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 06:01:17,599 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:17,600 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:17,600 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:17,600 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 06:01:17,601 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:17,614 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:17,615 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-29 06:01:17,624 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-10-29 06:01:17,628 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_15|], 21=[|v_#valid_16|]} [2021-10-29 06:01:17,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:17,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:17,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:17,658 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 [2021-10-29 06:01:17,659 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:17,659 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 06:01:17,660 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:17,661 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 06:01:17,661 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 06:01:17,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:17,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:17,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:17,692 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 [2021-10-29 06:01:17,692 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:17,693 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 06:01:17,693 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:17,694 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 06:01:17,694 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 06:01:17,695 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:01:17,735 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:17,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:17,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:17,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:17,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:17,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:17,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:17,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:17,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:17,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:17,783 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 [2021-10-29 06:01:17,784 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:17,786 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 06:01:17,787 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:17,787 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 06:01:17,788 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-29 06:01:17,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:17,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:17,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:17,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:17,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:17,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:17,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:17,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:17,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:17,819 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 [2021-10-29 06:01:17,820 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:17,823 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 06:01:17,824 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:17,825 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 06:01:17,825 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-29 06:01:17,826 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:01:17,839 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:17,842 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:17,845 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 251 [2021-10-29 06:01:17,846 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-10-29 06:01:17,847 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:301, output treesize:251 [2021-10-29 06:01:17,851 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:17,858 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 257 [2021-10-29 06:01:17,863 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:17,869 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 286 [2021-10-29 06:01:17,874 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:17,880 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 303 [2021-10-29 06:01:17,886 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:17,892 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 305 [2021-10-29 06:01:17,897 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:17,905 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 329 [2021-10-29 06:01:17,911 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:17,918 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 339 [2021-10-29 06:01:17,924 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:17,935 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 478 [2021-10-29 06:01:17,943 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:01:17,974 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:01:17,975 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:01:17,976 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:01:17,978 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:01:17,980 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:01:17,981 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:01:17,982 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:01:17,989 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:01:17,995 INFO L180 QuantifierPusher]: treesize reduction 30, result has 66.7 percent of original size [2021-10-29 06:01:17,997 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-10-29 06:01:17,999 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:18,001 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-10-29 06:01:18,004 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:18,008 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-10-29 06:01:18,011 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:18,015 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-10-29 06:01:18,025 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:18,029 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-10-29 06:01:18,032 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:18,036 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-10-29 06:01:18,040 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:18,047 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 356 [2021-10-29 06:01:18,055 INFO L180 QuantifierPusher]: treesize reduction 30, result has 66.7 percent of original size [2021-10-29 06:01:18,057 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-10-29 06:01:18,060 INFO L180 QuantifierPusher]: treesize reduction 4, result has 93.4 percent of original size [2021-10-29 06:01:18,062 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-10-29 06:01:18,068 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:18,072 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-29 06:01:18,243 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:18,245 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-10-29 06:01:18,249 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:18,253 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-10-29 06:01:18,259 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:18,262 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-10-29 06:01:18,267 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:18,272 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-10-29 06:01:18,280 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:18,284 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-10-29 06:01:18,291 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 06:01:31,241 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 06:01:31,242 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 06:01:31,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2021-10-29 06:01:31,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350118515] [2021-10-29 06:01:31,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-29 06:01:31,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:31,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-29 06:01:31,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=334, Invalid=1148, Unknown=0, NotChecked=0, Total=1482 [2021-10-29 06:01:31,245 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand has 26 states, 26 states have (on average 9.653846153846153) internal successors, (251), 25 states have internal predecessors, (251), 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) [2021-10-29 06:01:31,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:31,848 INFO L93 Difference]: Finished difference Result 307 states and 318 transitions. [2021-10-29 06:01:31,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-29 06:01:31,849 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.653846153846153) internal successors, (251), 25 states have internal predecessors, (251), 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 128 [2021-10-29 06:01:31,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:31,852 INFO L225 Difference]: With dead ends: 307 [2021-10-29 06:01:31,852 INFO L226 Difference]: Without dead ends: 287 [2021-10-29 06:01:31,854 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 305 SyntacticMatches, 40 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2280 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=849, Invalid=2691, Unknown=0, NotChecked=0, Total=3540 [2021-10-29 06:01:31,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-29 06:01:31,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-10-29 06:01:31,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 283 states have (on average 1.0141342756183747) internal successors, (287), 286 states have internal predecessors, (287), 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) [2021-10-29 06:01:31,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 287 transitions. [2021-10-29 06:01:31,924 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 287 transitions. Word has length 128 [2021-10-29 06:01:31,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:31,925 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 287 transitions. [2021-10-29 06:01:31,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.653846153846153) internal successors, (251), 25 states have internal predecessors, (251), 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) [2021-10-29 06:01:31,925 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 287 transitions. [2021-10-29 06:01:31,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2021-10-29 06:01:31,930 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:31,930 INFO L513 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:01:31,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-29 06:01:32,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-10-29 06:01:32,150 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-29 06:01:32,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:32,151 INFO L85 PathProgramCache]: Analyzing trace with hash 934599565, now seen corresponding path program 4 times [2021-10-29 06:01:32,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:32,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274923902] [2021-10-29 06:01:32,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:32,151 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:32,184 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 06:01:32,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1393803867] [2021-10-29 06:01:32,184 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-29 06:01:32,184 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 06:01:32,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 06:01:32,186 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 06:01:32,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-29 06:01:32,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:32,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 918 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-29 06:01:32,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:01:34,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2816 backedges. 0 proven. 2816 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:34,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:01:35,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2816 backedges. 0 proven. 2816 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:35,871 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:35,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274923902] [2021-10-29 06:01:35,872 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 06:01:35,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393803867] [2021-10-29 06:01:35,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393803867] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 06:01:35,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [219670448] [2021-10-29 06:01:35,876 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2021-10-29 06:01:35,879 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 06:01:35,879 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 06:01:35,879 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 06:01:35,880 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 06:01:35,888 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:35,889 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:35,890 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:35,890 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-29 06:01:35,891 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:01:35,891 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:35,891 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 06:01:35,899 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-10-29 06:01:35,904 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_16|], 21=[|v_#valid_17|]} [2021-10-29 06:01:35,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:35,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:35,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:35,928 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 [2021-10-29 06:01:35,929 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:35,929 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 06:01:35,930 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:35,931 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 06:01:35,931 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 06:01:35,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:35,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:35,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:35,952 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 [2021-10-29 06:01:35,952 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:35,953 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 06:01:35,958 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:35,959 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 06:01:35,959 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 06:01:35,960 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:01:35,970 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:35,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:35,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:35,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:35,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:35,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:35,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:35,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:35,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:35,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:36,017 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 [2021-10-29 06:01:36,018 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:36,021 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 06:01:36,022 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:36,022 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 06:01:36,023 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-29 06:01:36,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:36,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:36,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:36,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:36,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:36,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:36,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:36,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:36,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:01:36,055 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 [2021-10-29 06:01:36,056 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:36,059 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 06:01:36,060 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:36,060 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 06:01:36,061 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-29 06:01:36,061 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:01:36,072 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:36,075 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:36,078 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 251 [2021-10-29 06:01:36,079 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-10-29 06:01:36,079 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:301, output treesize:251 [2021-10-29 06:01:36,083 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:36,089 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 257 [2021-10-29 06:01:36,093 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:36,100 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 286 [2021-10-29 06:01:36,104 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:36,109 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 303 [2021-10-29 06:01:36,114 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:36,120 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 305 [2021-10-29 06:01:36,125 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:36,130 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 329 [2021-10-29 06:01:36,135 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:36,141 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 339 [2021-10-29 06:01:36,147 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:36,156 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 477 [2021-10-29 06:01:36,165 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:01:36,190 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:01:36,191 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:01:36,192 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:01:36,194 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:01:36,195 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:01:36,196 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:01:36,197 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:01:36,204 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:01:36,210 INFO L180 QuantifierPusher]: treesize reduction 30, result has 66.7 percent of original size [2021-10-29 06:01:36,211 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-10-29 06:01:36,213 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:36,215 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-10-29 06:01:36,218 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:36,221 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-10-29 06:01:36,224 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:36,227 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-10-29 06:01:36,230 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:36,238 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-10-29 06:01:36,241 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:36,245 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-10-29 06:01:36,249 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:36,259 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 344 [2021-10-29 06:01:36,268 INFO L180 QuantifierPusher]: treesize reduction 30, result has 66.7 percent of original size [2021-10-29 06:01:36,269 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-10-29 06:01:36,271 INFO L180 QuantifierPusher]: treesize reduction 4, result has 93.4 percent of original size [2021-10-29 06:01:36,272 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-10-29 06:01:36,276 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:36,281 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-29 06:01:36,405 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:36,406 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-10-29 06:01:36,409 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:36,412 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-10-29 06:01:36,415 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:36,418 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-10-29 06:01:36,422 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:36,425 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-10-29 06:01:36,429 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:01:36,433 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-10-29 06:01:36,436 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 06:02:02,948 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 06:02:02,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 06:02:02,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 49 [2021-10-29 06:02:02,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119630760] [2021-10-29 06:02:02,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-10-29 06:02:02,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:02:02,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-10-29 06:02:02,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1186, Invalid=2720, Unknown=0, NotChecked=0, Total=3906 [2021-10-29 06:02:02,954 INFO L87 Difference]: Start difference. First operand 287 states and 287 transitions. Second operand has 50 states, 50 states have (on average 10.78) internal successors, (539), 49 states have internal predecessors, (539), 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) [2021-10-29 06:02:04,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:02:04,551 INFO L93 Difference]: Finished difference Result 595 states and 618 transitions. [2021-10-29 06:02:04,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-10-29 06:02:04,552 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 10.78) internal successors, (539), 49 states have internal predecessors, (539), 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 272 [2021-10-29 06:02:04,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:02:04,556 INFO L225 Difference]: With dead ends: 595 [2021-10-29 06:02:04,556 INFO L226 Difference]: Without dead ends: 575 [2021-10-29 06:02:04,562 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 859 GetRequests, 665 SyntacticMatches, 88 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8766 ImplicationChecksByTransitivity, 28.8s TimeCoverageRelationStatistics Valid=3369, Invalid=8187, Unknown=0, NotChecked=0, Total=11556 [2021-10-29 06:02:04,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2021-10-29 06:02:04,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 575. [2021-10-29 06:02:04,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 571 states have (on average 1.0070052539404553) internal successors, (575), 574 states have internal predecessors, (575), 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) [2021-10-29 06:02:04,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 575 transitions. [2021-10-29 06:02:04,686 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 575 transitions. Word has length 272 [2021-10-29 06:02:04,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:02:04,687 INFO L470 AbstractCegarLoop]: Abstraction has 575 states and 575 transitions. [2021-10-29 06:02:04,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 10.78) internal successors, (539), 49 states have internal predecessors, (539), 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) [2021-10-29 06:02:04,688 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 575 transitions. [2021-10-29 06:02:04,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2021-10-29 06:02:04,704 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:02:04,704 INFO L513 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:02:04,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-29 06:02:04,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 06:02:04,927 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-29 06:02:04,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:02:04,927 INFO L85 PathProgramCache]: Analyzing trace with hash 417767501, now seen corresponding path program 5 times [2021-10-29 06:02:04,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:02:04,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783373156] [2021-10-29 06:02:04,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:02:04,928 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:02:04,958 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 06:02:04,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [906965184] [2021-10-29 06:02:04,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 06:02:04,959 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 06:02:04,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 06:02:04,960 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 06:02:04,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-29 06:02:07,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2021-10-29 06:02:07,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 06:02:07,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 1854 conjuncts, 95 conjunts are in the unsatisfiable core [2021-10-29 06:02:07,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:02:10,091 INFO L134 CoverageAnalysis]: Checked inductivity of 12512 backedges. 0 proven. 12512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:02:10,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:02:12,095 INFO L134 CoverageAnalysis]: Checked inductivity of 12512 backedges. 0 proven. 12512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:02:12,095 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:02:12,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783373156] [2021-10-29 06:02:12,095 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 06:02:12,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906965184] [2021-10-29 06:02:12,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906965184] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 06:02:12,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [399603110] [2021-10-29 06:02:12,098 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2021-10-29 06:02:12,098 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 06:02:12,099 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 06:02:12,099 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 06:02:12,099 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 06:02:12,107 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:02:12,108 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:02:12,109 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:02:12,110 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-29 06:02:12,117 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 06:02:12,118 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:02:12,119 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 06:02:12,120 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-10-29 06:02:12,125 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_17|], 21=[|v_#valid_18|]} [2021-10-29 06:02:12,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:02:12,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:02:12,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:02:12,150 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 [2021-10-29 06:02:12,151 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:02:12,151 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 06:02:12,152 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:02:12,152 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 06:02:12,152 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 06:02:12,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:02:12,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:02:12,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:02:12,174 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 [2021-10-29 06:02:12,174 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:02:12,176 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 06:02:12,176 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:02:12,177 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 06:02:12,177 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 06:02:12,177 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:12,185 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:02:12,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:02:12,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:02:12,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:02:12,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:02:12,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:02:12,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:02:12,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:02:12,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:02:12,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:02:12,239 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 [2021-10-29 06:02:12,240 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:02:12,244 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 06:02:12,245 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:02:12,245 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 06:02:12,245 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-29 06:02:12,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:02:12,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:02:12,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:02:12,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:02:12,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:02:12,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:02:12,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:02:12,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:02:12,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 06:02:12,283 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 [2021-10-29 06:02:12,284 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:02:12,287 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 06:02:12,288 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:02:12,288 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 06:02:12,289 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-29 06:02:12,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:12,299 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:02:12,301 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:02:12,303 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 251 [2021-10-29 06:02:12,304 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-10-29 06:02:12,304 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:301, output treesize:251 [2021-10-29 06:02:12,307 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:02:12,310 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 257 [2021-10-29 06:02:12,316 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:02:12,331 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 286 [2021-10-29 06:02:12,334 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:02:12,338 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 303 [2021-10-29 06:02:12,342 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:02:12,346 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 305 [2021-10-29 06:02:12,350 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:02:12,354 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 329 [2021-10-29 06:02:12,357 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:02:12,375 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 339 [2021-10-29 06:02:12,381 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:02:12,394 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 647 [2021-10-29 06:02:12,404 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:12,430 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:12,432 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:12,433 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:12,434 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:12,435 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:12,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:12,437 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:12,445 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:02:12,451 INFO L180 QuantifierPusher]: treesize reduction 30, result has 66.7 percent of original size [2021-10-29 06:02:12,452 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-10-29 06:02:12,454 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:02:12,456 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-10-29 06:02:12,459 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:02:12,462 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-10-29 06:02:12,465 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:02:12,470 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-10-29 06:02:12,473 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:02:12,477 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-10-29 06:02:12,481 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:02:12,485 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-10-29 06:02:12,488 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:02:12,494 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 267 [2021-10-29 06:02:12,501 INFO L180 QuantifierPusher]: treesize reduction 30, result has 66.7 percent of original size [2021-10-29 06:02:12,514 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-10-29 06:02:12,517 INFO L180 QuantifierPusher]: treesize reduction 4, result has 93.4 percent of original size [2021-10-29 06:02:12,518 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-10-29 06:02:12,525 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:02:12,528 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-29 06:02:12,603 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:02:12,605 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-10-29 06:02:12,609 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:02:12,612 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-10-29 06:02:12,616 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:02:12,619 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-10-29 06:02:12,624 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:02:12,627 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-10-29 06:02:12,633 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 06:02:12,640 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-10-29 06:02:12,648 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 06:03:48,366 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 06:03:48,366 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-29 06:03:48,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 53 [2021-10-29 06:03:48,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312777614] [2021-10-29 06:03:48,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-10-29 06:03:48,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:03:48,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-10-29 06:03:48,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1384, Invalid=3038, Unknown=0, NotChecked=0, Total=4422 [2021-10-29 06:03:48,371 INFO L87 Difference]: Start difference. First operand 575 states and 575 transitions. Second operand has 54 states, 54 states have (on average 11.092592592592593) internal successors, (599), 53 states have internal predecessors, (599), 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) [2021-10-29 06:03:50,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:03:50,030 INFO L93 Difference]: Finished difference Result 643 states and 646 transitions. [2021-10-29 06:03:50,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-10-29 06:03:50,030 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 11.092592592592593) internal successors, (599), 53 states have internal predecessors, (599), 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 560 [2021-10-29 06:03:50,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:03:50,035 INFO L225 Difference]: With dead ends: 643 [2021-10-29 06:03:50,035 INFO L226 Difference]: Without dead ends: 623 [2021-10-29 06:03:50,041 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1727 GetRequests, 1428 SyntacticMatches, 185 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12269 ImplicationChecksByTransitivity, 98.2s TimeCoverageRelationStatistics Valid=3979, Invalid=9361, Unknown=0, NotChecked=0, Total=13340 [2021-10-29 06:03:50,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2021-10-29 06:03:50,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2021-10-29 06:03:50,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 619 states have (on average 1.0064620355411955) internal successors, (623), 622 states have internal predecessors, (623), 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) [2021-10-29 06:03:50,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 623 transitions. [2021-10-29 06:03:50,155 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 623 transitions. Word has length 560 [2021-10-29 06:03:50,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:03:50,157 INFO L470 AbstractCegarLoop]: Abstraction has 623 states and 623 transitions. [2021-10-29 06:03:50,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 11.092592592592593) internal successors, (599), 53 states have internal predecessors, (599), 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) [2021-10-29 06:03:50,158 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 623 transitions. [2021-10-29 06:03:50,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2021-10-29 06:03:50,182 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:03:50,182 INFO L513 BasicCegarLoop]: trace histogram [51, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:03:50,233 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-10-29 06:03:50,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2021-10-29 06:03:50,410 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-29 06:03:50,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:03:50,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1566504557, now seen corresponding path program 6 times [2021-10-29 06:03:50,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:03:50,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597921814] [2021-10-29 06:03:50,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:03:50,412 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:03:50,454 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 06:03:50,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [412518043] [2021-10-29 06:03:50,454 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-29 06:03:50,454 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 06:03:50,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 06:03:50,455 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 06:03:50,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-29 06:03:52,752 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-29 06:03:52,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-10-29 06:03:52,752 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 06:03:53,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 06:03:53,338 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 06:03:53,339 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 06:03:53,340 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 06:03:53,342 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 06:03:53,343 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 06:03:53,343 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 06:03:53,343 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 06:03:53,343 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 06:03:53,343 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 06:03:53,343 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 06:03:53,344 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 06:03:53,344 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 06:03:53,344 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 06:03:53,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-29 06:03:53,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2021-10-29 06:03:53,550 INFO L731 BasicCegarLoop]: Path program histogram: [6, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:03:53,555 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 06:03:53,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 06:03:53 BoogieIcfgContainer [2021-10-29 06:03:53,859 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 06:03:53,860 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 06:03:53,860 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 06:03:53,860 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 06:03:53,861 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:55:07" (3/4) ... [2021-10-29 06:03:53,863 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 06:03:54,119 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 06:03:54,119 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 06:03:54,120 INFO L168 Benchmark]: Toolchain (without parser) took 527689.01 ms. Allocated memory was 117.4 MB in the beginning and 180.4 MB in the end (delta: 62.9 MB). Free memory was 78.6 MB in the beginning and 67.5 MB in the end (delta: 11.1 MB). Peak memory consumption was 98.0 MB. Max. memory is 16.1 GB. [2021-10-29 06:03:54,120 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 117.4 MB. Free memory is still 95.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 06:03:54,121 INFO L168 Benchmark]: CACSL2BoogieTranslator took 398.36 ms. Allocated memory is still 117.4 MB. Free memory was 78.4 MB in the beginning and 91.1 MB in the end (delta: -12.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-29 06:03:54,121 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.71 ms. Allocated memory is still 117.4 MB. Free memory was 91.1 MB in the beginning and 89.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 06:03:54,121 INFO L168 Benchmark]: Boogie Preprocessor took 43.95 ms. Allocated memory is still 117.4 MB. Free memory was 89.1 MB in the beginning and 88.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 06:03:54,121 INFO L168 Benchmark]: RCFGBuilder took 544.65 ms. Allocated memory is still 117.4 MB. Free memory was 88.1 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 06:03:54,122 INFO L168 Benchmark]: TraceAbstraction took 526355.36 ms. Allocated memory was 117.4 MB in the beginning and 180.4 MB in the end (delta: 62.9 MB). Free memory was 75.0 MB in the beginning and 69.2 MB in the end (delta: 5.8 MB). Peak memory consumption was 88.1 MB. Max. memory is 16.1 GB. [2021-10-29 06:03:54,122 INFO L168 Benchmark]: Witness Printer took 259.79 ms. Allocated memory is still 180.4 MB. Free memory was 69.2 MB in the beginning and 67.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-29 06:03:54,123 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 117.4 MB. Free memory is still 95.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 398.36 ms. Allocated memory is still 117.4 MB. Free memory was 78.4 MB in the beginning and 91.1 MB in the end (delta: -12.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 75.71 ms. Allocated memory is still 117.4 MB. Free memory was 91.1 MB in the beginning and 89.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.95 ms. Allocated memory is still 117.4 MB. Free memory was 89.1 MB in the beginning and 88.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 544.65 ms. Allocated memory is still 117.4 MB. Free memory was 88.1 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 526355.36 ms. Allocated memory was 117.4 MB in the beginning and 180.4 MB in the end (delta: 62.9 MB). Free memory was 75.0 MB in the beginning and 69.2 MB in the end (delta: 5.8 MB). Peak memory consumption was 88.1 MB. Max. memory is 16.1 GB. * Witness Printer took 259.79 ms. Allocated memory is still 180.4 MB. Free memory was 69.2 MB in the beginning and 67.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 25.2 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; [L24] short a; [L25] long long n, x, y, z; [L26] a = __VERIFIER_nondet_ushort() [L28] n = 0 [L29] x = 0 [L30] y = 1 [L31] z = 6 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=1] [L33] EXPR counter++ VAL [counter=2] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=2] [L33] EXPR counter++ VAL [counter=3] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=3] [L33] EXPR counter++ VAL [counter=4] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=4] [L33] EXPR counter++ VAL [counter=5] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=5] [L15] COND FALSE !(!(cond)) VAL [counter=5] [L15] COND FALSE !(!(cond)) VAL [counter=5] [L15] COND FALSE !(!(cond)) VAL [counter=5] [L15] COND FALSE !(!(cond)) VAL [counter=5] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=5] [L33] EXPR counter++ VAL [counter=6] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=6] [L15] COND FALSE !(!(cond)) VAL [counter=6] [L15] COND FALSE !(!(cond)) VAL [counter=6] [L15] COND FALSE !(!(cond)) VAL [counter=6] [L15] COND FALSE !(!(cond)) VAL [counter=6] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=6] [L33] EXPR counter++ VAL [counter=7] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=7] [L15] COND FALSE !(!(cond)) VAL [counter=7] [L15] COND FALSE !(!(cond)) VAL [counter=7] [L15] COND FALSE !(!(cond)) VAL [counter=7] [L15] COND FALSE !(!(cond)) VAL [counter=7] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=7] [L33] EXPR counter++ VAL [counter=8] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=8] [L15] COND FALSE !(!(cond)) VAL [counter=8] [L15] COND FALSE !(!(cond)) VAL [counter=8] [L15] COND FALSE !(!(cond)) VAL [counter=8] [L15] COND FALSE !(!(cond)) VAL [counter=8] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=8] [L33] EXPR counter++ VAL [counter=9] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=9] [L15] COND FALSE !(!(cond)) VAL [counter=9] [L15] COND FALSE !(!(cond)) VAL [counter=9] [L15] COND FALSE !(!(cond)) VAL [counter=9] [L15] COND FALSE !(!(cond)) VAL [counter=9] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=9] [L33] EXPR counter++ VAL [counter=10] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=10] [L15] COND FALSE !(!(cond)) VAL [counter=10] [L15] COND FALSE !(!(cond)) VAL [counter=10] [L15] COND FALSE !(!(cond)) VAL [counter=10] [L15] COND FALSE !(!(cond)) VAL [counter=10] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=10] [L33] EXPR counter++ VAL [counter=11] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=11] [L15] COND FALSE !(!(cond)) VAL [counter=11] [L15] COND FALSE !(!(cond)) VAL [counter=11] [L15] COND FALSE !(!(cond)) VAL [counter=11] [L15] COND FALSE !(!(cond)) VAL [counter=11] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=11] [L33] EXPR counter++ VAL [counter=12] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=12] [L15] COND FALSE !(!(cond)) VAL [counter=12] [L15] COND FALSE !(!(cond)) VAL [counter=12] [L15] COND FALSE !(!(cond)) VAL [counter=12] [L15] COND FALSE !(!(cond)) VAL [counter=12] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=12] [L33] EXPR counter++ VAL [counter=13] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=13] [L15] COND FALSE !(!(cond)) VAL [counter=13] [L15] COND FALSE !(!(cond)) VAL [counter=13] [L15] COND FALSE !(!(cond)) VAL [counter=13] [L15] COND FALSE !(!(cond)) VAL [counter=13] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=13] [L33] EXPR counter++ VAL [counter=14] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=14] [L15] COND FALSE !(!(cond)) VAL [counter=14] [L15] COND FALSE !(!(cond)) VAL [counter=14] [L15] COND FALSE !(!(cond)) VAL [counter=14] [L15] COND FALSE !(!(cond)) VAL [counter=14] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=14] [L33] EXPR counter++ VAL [counter=15] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=15] [L15] COND FALSE !(!(cond)) VAL [counter=15] [L15] COND FALSE !(!(cond)) VAL [counter=15] [L15] COND FALSE !(!(cond)) VAL [counter=15] [L15] COND FALSE !(!(cond)) VAL [counter=15] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=15] [L33] EXPR counter++ VAL [counter=16] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=16] [L15] COND FALSE !(!(cond)) VAL [counter=16] [L15] COND FALSE !(!(cond)) VAL [counter=16] [L15] COND FALSE !(!(cond)) VAL [counter=16] [L15] COND FALSE !(!(cond)) VAL [counter=16] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=16] [L33] EXPR counter++ VAL [counter=17] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=17] [L15] COND FALSE !(!(cond)) VAL [counter=17] [L15] COND FALSE !(!(cond)) VAL [counter=17] [L15] COND FALSE !(!(cond)) VAL [counter=17] [L15] COND FALSE !(!(cond)) VAL [counter=17] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=17] [L33] EXPR counter++ VAL [counter=18] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=18] [L15] COND FALSE !(!(cond)) VAL [counter=18] [L15] COND FALSE !(!(cond)) VAL [counter=18] [L15] COND FALSE !(!(cond)) VAL [counter=18] [L15] COND FALSE !(!(cond)) VAL [counter=18] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=18] [L33] EXPR counter++ VAL [counter=19] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=19] [L15] COND FALSE !(!(cond)) VAL [counter=19] [L15] COND FALSE !(!(cond)) VAL [counter=19] [L15] COND FALSE !(!(cond)) VAL [counter=19] [L15] COND FALSE !(!(cond)) VAL [counter=19] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=19] [L33] EXPR counter++ VAL [counter=20] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=20] [L15] COND FALSE !(!(cond)) VAL [counter=20] [L15] COND FALSE !(!(cond)) VAL [counter=20] [L15] COND FALSE !(!(cond)) VAL [counter=20] [L15] COND FALSE !(!(cond)) VAL [counter=20] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=20] [L33] EXPR counter++ VAL [counter=21] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=21] [L15] COND FALSE !(!(cond)) VAL [counter=21] [L15] COND FALSE !(!(cond)) VAL [counter=21] [L15] COND FALSE !(!(cond)) VAL [counter=21] [L15] COND FALSE !(!(cond)) VAL [counter=21] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=21] [L33] EXPR counter++ VAL [counter=22] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=22] [L15] COND FALSE !(!(cond)) VAL [counter=22] [L15] COND FALSE !(!(cond)) VAL [counter=22] [L15] COND FALSE !(!(cond)) VAL [counter=22] [L15] COND FALSE !(!(cond)) VAL [counter=22] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=22] [L33] EXPR counter++ VAL [counter=23] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=23] [L15] COND FALSE !(!(cond)) VAL [counter=23] [L15] COND FALSE !(!(cond)) VAL [counter=23] [L15] COND FALSE !(!(cond)) VAL [counter=23] [L15] COND FALSE !(!(cond)) VAL [counter=23] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=23] [L33] EXPR counter++ VAL [counter=24] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=24] [L15] COND FALSE !(!(cond)) VAL [counter=24] [L15] COND FALSE !(!(cond)) VAL [counter=24] [L15] COND FALSE !(!(cond)) VAL [counter=24] [L15] COND FALSE !(!(cond)) VAL [counter=24] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=24] [L33] EXPR counter++ VAL [counter=25] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=25] [L15] COND FALSE !(!(cond)) VAL [counter=25] [L15] COND FALSE !(!(cond)) VAL [counter=25] [L15] COND FALSE !(!(cond)) VAL [counter=25] [L15] COND FALSE !(!(cond)) VAL [counter=25] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=25] [L33] EXPR counter++ VAL [counter=26] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=26] [L15] COND FALSE !(!(cond)) VAL [counter=26] [L15] COND FALSE !(!(cond)) VAL [counter=26] [L15] COND FALSE !(!(cond)) VAL [counter=26] [L15] COND FALSE !(!(cond)) VAL [counter=26] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=26] [L33] EXPR counter++ VAL [counter=27] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=27] [L15] COND FALSE !(!(cond)) VAL [counter=27] [L15] COND FALSE !(!(cond)) VAL [counter=27] [L15] COND FALSE !(!(cond)) VAL [counter=27] [L15] COND FALSE !(!(cond)) VAL [counter=27] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=27] [L33] EXPR counter++ VAL [counter=28] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=28] [L15] COND FALSE !(!(cond)) VAL [counter=28] [L15] COND FALSE !(!(cond)) VAL [counter=28] [L15] COND FALSE !(!(cond)) VAL [counter=28] [L15] COND FALSE !(!(cond)) VAL [counter=28] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=28] [L33] EXPR counter++ VAL [counter=29] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=29] [L15] COND FALSE !(!(cond)) VAL [counter=29] [L15] COND FALSE !(!(cond)) VAL [counter=29] [L15] COND FALSE !(!(cond)) VAL [counter=29] [L15] COND FALSE !(!(cond)) VAL [counter=29] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=29] [L33] EXPR counter++ VAL [counter=30] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=30] [L15] COND FALSE !(!(cond)) VAL [counter=30] [L15] COND FALSE !(!(cond)) VAL [counter=30] [L15] COND FALSE !(!(cond)) VAL [counter=30] [L15] COND FALSE !(!(cond)) VAL [counter=30] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=30] [L33] EXPR counter++ VAL [counter=31] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=31] [L15] COND FALSE !(!(cond)) VAL [counter=31] [L15] COND FALSE !(!(cond)) VAL [counter=31] [L15] COND FALSE !(!(cond)) VAL [counter=31] [L15] COND FALSE !(!(cond)) VAL [counter=31] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=31] [L33] EXPR counter++ VAL [counter=32] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=32] [L15] COND FALSE !(!(cond)) VAL [counter=32] [L15] COND FALSE !(!(cond)) VAL [counter=32] [L15] COND FALSE !(!(cond)) VAL [counter=32] [L15] COND FALSE !(!(cond)) VAL [counter=32] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=32] [L33] EXPR counter++ VAL [counter=33] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=33] [L15] COND FALSE !(!(cond)) VAL [counter=33] [L15] COND FALSE !(!(cond)) VAL [counter=33] [L15] COND FALSE !(!(cond)) VAL [counter=33] [L15] COND FALSE !(!(cond)) VAL [counter=33] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=33] [L33] EXPR counter++ VAL [counter=34] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=34] [L15] COND FALSE !(!(cond)) VAL [counter=34] [L15] COND FALSE !(!(cond)) VAL [counter=34] [L15] COND FALSE !(!(cond)) VAL [counter=34] [L15] COND FALSE !(!(cond)) VAL [counter=34] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=34] [L33] EXPR counter++ VAL [counter=35] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=35] [L15] COND FALSE !(!(cond)) VAL [counter=35] [L15] COND FALSE !(!(cond)) VAL [counter=35] [L15] COND FALSE !(!(cond)) VAL [counter=35] [L15] COND FALSE !(!(cond)) VAL [counter=35] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=35] [L33] EXPR counter++ VAL [counter=36] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=36] [L15] COND FALSE !(!(cond)) VAL [counter=36] [L15] COND FALSE !(!(cond)) VAL [counter=36] [L15] COND FALSE !(!(cond)) VAL [counter=36] [L15] COND FALSE !(!(cond)) VAL [counter=36] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=36] [L33] EXPR counter++ VAL [counter=37] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=37] [L15] COND FALSE !(!(cond)) VAL [counter=37] [L15] COND FALSE !(!(cond)) VAL [counter=37] [L15] COND FALSE !(!(cond)) VAL [counter=37] [L15] COND FALSE !(!(cond)) VAL [counter=37] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=37] [L33] EXPR counter++ VAL [counter=38] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=38] [L15] COND FALSE !(!(cond)) VAL [counter=38] [L15] COND FALSE !(!(cond)) VAL [counter=38] [L15] COND FALSE !(!(cond)) VAL [counter=38] [L15] COND FALSE !(!(cond)) VAL [counter=38] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=38] [L33] EXPR counter++ VAL [counter=39] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=39] [L15] COND FALSE !(!(cond)) VAL [counter=39] [L15] COND FALSE !(!(cond)) VAL [counter=39] [L15] COND FALSE !(!(cond)) VAL [counter=39] [L15] COND FALSE !(!(cond)) VAL [counter=39] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=39] [L33] EXPR counter++ VAL [counter=40] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=40] [L15] COND FALSE !(!(cond)) VAL [counter=40] [L15] COND FALSE !(!(cond)) VAL [counter=40] [L15] COND FALSE !(!(cond)) VAL [counter=40] [L15] COND FALSE !(!(cond)) VAL [counter=40] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=40] [L33] EXPR counter++ VAL [counter=41] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=41] [L15] COND FALSE !(!(cond)) VAL [counter=41] [L15] COND FALSE !(!(cond)) VAL [counter=41] [L15] COND FALSE !(!(cond)) VAL [counter=41] [L15] COND FALSE !(!(cond)) VAL [counter=41] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=41] [L33] EXPR counter++ VAL [counter=42] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=42] [L15] COND FALSE !(!(cond)) VAL [counter=42] [L15] COND FALSE !(!(cond)) VAL [counter=42] [L15] COND FALSE !(!(cond)) VAL [counter=42] [L15] COND FALSE !(!(cond)) VAL [counter=42] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=42] [L33] EXPR counter++ VAL [counter=43] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=43] [L15] COND FALSE !(!(cond)) VAL [counter=43] [L15] COND FALSE !(!(cond)) VAL [counter=43] [L15] COND FALSE !(!(cond)) VAL [counter=43] [L15] COND FALSE !(!(cond)) VAL [counter=43] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=43] [L33] EXPR counter++ VAL [counter=44] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=44] [L15] COND FALSE !(!(cond)) VAL [counter=44] [L15] COND FALSE !(!(cond)) VAL [counter=44] [L15] COND FALSE !(!(cond)) VAL [counter=44] [L15] COND FALSE !(!(cond)) VAL [counter=44] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=44] [L33] EXPR counter++ VAL [counter=45] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=45] [L15] COND FALSE !(!(cond)) VAL [counter=45] [L15] COND FALSE !(!(cond)) VAL [counter=45] [L15] COND FALSE !(!(cond)) VAL [counter=45] [L15] COND FALSE !(!(cond)) VAL [counter=45] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=45] [L33] EXPR counter++ VAL [counter=46] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=46] [L15] COND FALSE !(!(cond)) VAL [counter=46] [L15] COND FALSE !(!(cond)) VAL [counter=46] [L15] COND FALSE !(!(cond)) VAL [counter=46] [L15] COND FALSE !(!(cond)) VAL [counter=46] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=46] [L33] EXPR counter++ VAL [counter=47] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=47] [L15] COND FALSE !(!(cond)) VAL [counter=47] [L15] COND FALSE !(!(cond)) VAL [counter=47] [L15] COND FALSE !(!(cond)) VAL [counter=47] [L15] COND FALSE !(!(cond)) VAL [counter=47] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=47] [L33] EXPR counter++ VAL [counter=48] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=48] [L15] COND FALSE !(!(cond)) VAL [counter=48] [L15] COND FALSE !(!(cond)) VAL [counter=48] [L15] COND FALSE !(!(cond)) VAL [counter=48] [L15] COND FALSE !(!(cond)) VAL [counter=48] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=48] [L33] EXPR counter++ VAL [counter=49] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=49] [L15] COND FALSE !(!(cond)) VAL [counter=49] [L15] COND FALSE !(!(cond)) VAL [counter=49] [L15] COND FALSE !(!(cond)) VAL [counter=49] [L15] COND FALSE !(!(cond)) VAL [counter=49] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=49] [L33] EXPR counter++ VAL [counter=50] [L33] COND TRUE counter++<50 [L15] COND FALSE !(!(cond)) VAL [counter=50] [L15] COND FALSE !(!(cond)) VAL [counter=50] [L15] COND FALSE !(!(cond)) VAL [counter=50] [L15] COND FALSE !(!(cond)) VAL [counter=50] [L15] COND FALSE !(!(cond)) VAL [counter=50] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=50] [L33] EXPR counter++ VAL [counter=51] [L33] COND FALSE !(counter++<50) [L15] COND FALSE !(!(cond)) VAL [counter=51] [L15] COND TRUE !(cond) VAL [counter=51] [L17] reach_error() VAL [counter=51] - UnprovableResult [Line: 17]: 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: 17]: 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: 17]: 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: 17]: 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: 17]: 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: 17]: 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: 17]: 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: 17]: 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: 17]: 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: 17]: 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, 49 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 525.9s, OverallIterations: 17, TraceHistogramMax: 51, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 40.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 452 SDtfs, 1336 SDslu, 2636 SDs, 0 SdLazy, 1234 SolverSat, 275 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 19.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3778 GetRequests, 2921 SyntacticMatches, 374 SemanticMatches, 483 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24977 ImplicationChecksByTransitivity, 416.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=623occurred in iteration=16, InterpolantAutomatonStates: 351, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 16 MinimizatonAttempts, 145 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 4.6s SatisfiabilityAnalysisTime, 300.3s InterpolantComputationTime, 1873 NumberOfCodeBlocks, 1837 NumberOfCodeBlocksAsserted, 71 NumberOfCheckSat, 2487 ConstructedInterpolants, 38 QuantifiedInterpolants, 14714 SizeOfPredicates, 154 NumberOfNonLiveVariables, 4419 ConjunctsInSsa, 359 ConjunctsInUnsatCore, 30 InterpolantComputations, 10 PerfectInterpolantSequences, 191/32208 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: OVERALL_TIME[ms]: 614, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 20, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 43, TOOLS_POST_TIME[ms]: 461, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 43, TOOLS_QUANTIFIERELIM_TIME[ms]: 449, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 223, FLUID_QUERY_TIME[ms]: 4, FLUID_QUERIES: 68, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME[ms]: 0, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME[ms]: 74, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME[ms]: 9, DOMAIN_ISBOTTOM_APPLICATIONS: 20, DOMAIN_ISBOTTOM_TIME[ms]: 45, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 264, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 264, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 1, PATH_EXPR_TIME[ms]: 1, REGEX_TO_DAG_TIME[ms]: 0, DAG_COMPRESSION_TIME[ms]: 3, DAG_COMPRESSION_PROCESSED_NODES: 270, DAG_COMPRESSION_RETAINED_NODES: 59, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-29 06:03:54,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c46cf041-234f-4a54-847b-f89951ba14cd/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...