./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd359d5c-08bb-438e-9acb-2d59fa108fe9/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd359d5c-08bb-438e-9acb-2d59fa108fe9/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd359d5c-08bb-438e-9acb-2d59fa108fe9/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd359d5c-08bb-438e-9acb-2d59fa108fe9/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd359d5c-08bb-438e-9acb-2d59fa108fe9/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd359d5c-08bb-438e-9acb-2d59fa108fe9/bin/uautomizer-IVEQpCNsaX --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a8c69edfe281d8042eaa18c76271419898cb900ad9a8f084e9a2ef367845176b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:57:22,035 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:57:22,038 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:57:22,081 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:57:22,082 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:57:22,083 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:57:22,085 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:57:22,088 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:57:22,090 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:57:22,091 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:57:22,093 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:57:22,094 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:57:22,095 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:57:22,096 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:57:22,098 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:57:22,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:57:22,101 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:57:22,102 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:57:22,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:57:22,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:57:22,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:57:22,110 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:57:22,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:57:22,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:57:22,117 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:57:22,117 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:57:22,118 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:57:22,119 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:57:22,119 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:57:22,121 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:57:22,121 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:57:22,122 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:57:22,123 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:57:22,124 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:57:22,125 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:57:22,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:57:22,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:57:22,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:57:22,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:57:22,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:57:22,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:57:22,131 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd359d5c-08bb-438e-9acb-2d59fa108fe9/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 08:57:22,155 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:57:22,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:57:22,156 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:57:22,156 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:57:22,157 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:57:22,158 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:57:22,158 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:57:22,158 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:57:22,158 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:57:22,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:57:22,159 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:57:22,159 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:57:22,159 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 08:57:22,160 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:57:22,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 08:57:22,160 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:57:22,160 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 08:57:22,160 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:57:22,161 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 08:57:22,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:57:22,161 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:57:22,161 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:57:22,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:57:22,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:57:22,162 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:57:22,162 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 08:57:22,163 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 08:57:22,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 08:57:22,163 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 08:57:22,163 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 08:57:22,163 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 08:57:22,164 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:57:22,164 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_dd359d5c-08bb-438e-9acb-2d59fa108fe9/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd359d5c-08bb-438e-9acb-2d59fa108fe9/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a8c69edfe281d8042eaa18c76271419898cb900ad9a8f084e9a2ef367845176b [2021-11-09 08:57:22,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:57:22,415 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:57:22,418 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:57:22,419 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:57:22,420 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:57:22,421 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd359d5c-08bb-438e-9acb-2d59fa108fe9/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2021-11-09 08:57:22,537 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd359d5c-08bb-438e-9acb-2d59fa108fe9/bin/uautomizer-IVEQpCNsaX/data/94aa18906/f2d3056f7c3e442b9b32edaf252bcf05/FLAG2f78f3533 [2021-11-09 08:57:23,143 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:57:23,144 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd359d5c-08bb-438e-9acb-2d59fa108fe9/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2021-11-09 08:57:23,170 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd359d5c-08bb-438e-9acb-2d59fa108fe9/bin/uautomizer-IVEQpCNsaX/data/94aa18906/f2d3056f7c3e442b9b32edaf252bcf05/FLAG2f78f3533 [2021-11-09 08:57:23,387 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd359d5c-08bb-438e-9acb-2d59fa108fe9/bin/uautomizer-IVEQpCNsaX/data/94aa18906/f2d3056f7c3e442b9b32edaf252bcf05 [2021-11-09 08:57:23,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:57:23,407 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 08:57:23,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:57:23,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:57:23,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:57:23,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:57:23" (1/1) ... [2021-11-09 08:57:23,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57d5721e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:23, skipping insertion in model container [2021-11-09 08:57:23,420 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:57:23" (1/1) ... [2021-11-09 08:57:23,429 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:57:23,558 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:57:23,966 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_dd359d5c-08bb-438e-9acb-2d59fa108fe9/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[22900,22913] [2021-11-09 08:57:24,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:57:24,154 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:57:24,317 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_dd359d5c-08bb-438e-9acb-2d59fa108fe9/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[22900,22913] [2021-11-09 08:57:24,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:57:24,423 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:57:24,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:24 WrapperNode [2021-11-09 08:57:24,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:57:24,427 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 08:57:24,427 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 08:57:24,428 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 08:57:24,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:24" (1/1) ... [2021-11-09 08:57:24,472 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:24" (1/1) ... [2021-11-09 08:57:24,579 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 08:57:24,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:57:24,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:57:24,580 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:57:24,589 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:24" (1/1) ... [2021-11-09 08:57:24,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:24" (1/1) ... [2021-11-09 08:57:24,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:24" (1/1) ... [2021-11-09 08:57:24,605 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:24" (1/1) ... [2021-11-09 08:57:24,663 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:24" (1/1) ... [2021-11-09 08:57:24,700 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:24" (1/1) ... [2021-11-09 08:57:24,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:24" (1/1) ... [2021-11-09 08:57:24,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:57:24,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:57:24,741 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:57:24,741 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:57:24,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:24" (1/1) ... [2021-11-09 08:57:24,751 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:57:24,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd359d5c-08bb-438e-9acb-2d59fa108fe9/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:57:24,788 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd359d5c-08bb-438e-9acb-2d59fa108fe9/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 08:57:24,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd359d5c-08bb-438e-9acb-2d59fa108fe9/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 08:57:24,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 08:57:24,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 08:57:24,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:57:24,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:57:27,075 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:57:27,076 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-09 08:57:27,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:57:27 BoogieIcfgContainer [2021-11-09 08:57:27,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:57:27,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 08:57:27,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 08:57:27,086 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 08:57:27,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:57:23" (1/3) ... [2021-11-09 08:57:27,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28e85069 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:57:27, skipping insertion in model container [2021-11-09 08:57:27,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:24" (2/3) ... [2021-11-09 08:57:27,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28e85069 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:57:27, skipping insertion in model container [2021-11-09 08:57:27,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:57:27" (3/3) ... [2021-11-09 08:57:27,090 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2021-11-09 08:57:27,096 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 08:57:27,096 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 08:57:27,153 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 08:57:27,160 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 08:57:27,162 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-09 08:57:27,203 INFO L276 IsEmpty]: Start isEmpty. Operand has 770 states, 768 states have (on average 1.8372395833333333) internal successors, (1411), 769 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:27,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-09 08:57:27,237 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:57:27,238 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:57:27,239 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:57:27,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:57:27,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1014698446, now seen corresponding path program 1 times [2021-11-09 08:57:27,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:57:27,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628093750] [2021-11-09 08:57:27,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:57:27,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:57:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:57:27,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:57:27,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:57:27,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628093750] [2021-11-09 08:57:27,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628093750] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:57:27,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:57:27,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:57:27,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223446204] [2021-11-09 08:57:27,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:57:27,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:57:27,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:57:27,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:57:28,000 INFO L87 Difference]: Start difference. First operand has 770 states, 768 states have (on average 1.8372395833333333) internal successors, (1411), 769 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:28,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:57:28,188 INFO L93 Difference]: Finished difference Result 1200 states and 2139 transitions. [2021-11-09 08:57:28,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:57:28,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 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 213 [2021-11-09 08:57:28,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:57:28,212 INFO L225 Difference]: With dead ends: 1200 [2021-11-09 08:57:28,212 INFO L226 Difference]: Without dead ends: 972 [2021-11-09 08:57:28,217 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:57:28,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2021-11-09 08:57:28,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 970. [2021-11-09 08:57:28,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 969 states have (on average 1.7358101135190918) internal successors, (1682), 969 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:28,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1682 transitions. [2021-11-09 08:57:28,320 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1682 transitions. Word has length 213 [2021-11-09 08:57:28,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:57:28,321 INFO L470 AbstractCegarLoop]: Abstraction has 970 states and 1682 transitions. [2021-11-09 08:57:28,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:28,322 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1682 transitions. [2021-11-09 08:57:28,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-09 08:57:28,334 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:57:28,335 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:57:28,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 08:57:28,335 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:57:28,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:57:28,336 INFO L85 PathProgramCache]: Analyzing trace with hash 327914487, now seen corresponding path program 1 times [2021-11-09 08:57:28,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:57:28,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843450817] [2021-11-09 08:57:28,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:57:28,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:57:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:57:28,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:57:28,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:57:28,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843450817] [2021-11-09 08:57:28,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843450817] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:57:28,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:57:28,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:57:28,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5580225] [2021-11-09 08:57:28,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:57:28,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:57:28,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:57:28,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:57:28,602 INFO L87 Difference]: Start difference. First operand 970 states and 1682 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:28,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:57:28,697 INFO L93 Difference]: Finished difference Result 1790 states and 3066 transitions. [2021-11-09 08:57:28,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:57:28,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 217 [2021-11-09 08:57:28,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:57:28,718 INFO L225 Difference]: With dead ends: 1790 [2021-11-09 08:57:28,719 INFO L226 Difference]: Without dead ends: 1368 [2021-11-09 08:57:28,726 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:57:28,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1368 states. [2021-11-09 08:57:28,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1368 to 1366. [2021-11-09 08:57:28,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1366 states, 1365 states have (on average 1.720879120879121) internal successors, (2349), 1365 states have internal predecessors, (2349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:28,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 2349 transitions. [2021-11-09 08:57:28,811 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 2349 transitions. Word has length 217 [2021-11-09 08:57:28,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:57:28,813 INFO L470 AbstractCegarLoop]: Abstraction has 1366 states and 2349 transitions. [2021-11-09 08:57:28,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:28,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 2349 transitions. [2021-11-09 08:57:28,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-11-09 08:57:28,821 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:57:28,822 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:57:28,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 08:57:28,823 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:57:28,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:57:28,825 INFO L85 PathProgramCache]: Analyzing trace with hash 279788732, now seen corresponding path program 1 times [2021-11-09 08:57:28,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:57:28,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044500679] [2021-11-09 08:57:28,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:57:28,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:57:28,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:57:29,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:57:29,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:57:29,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044500679] [2021-11-09 08:57:29,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044500679] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:57:29,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:57:29,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:57:29,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291726215] [2021-11-09 08:57:29,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:57:29,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:57:29,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:57:29,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:57:29,152 INFO L87 Difference]: Start difference. First operand 1366 states and 2349 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:29,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:57:29,242 INFO L93 Difference]: Finished difference Result 2954 states and 5023 transitions. [2021-11-09 08:57:29,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:57:29,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 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 221 [2021-11-09 08:57:29,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:57:29,257 INFO L225 Difference]: With dead ends: 2954 [2021-11-09 08:57:29,258 INFO L226 Difference]: Without dead ends: 2136 [2021-11-09 08:57:29,260 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:57:29,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2136 states. [2021-11-09 08:57:29,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2136 to 2134. [2021-11-09 08:57:29,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2134 states, 2133 states have (on average 1.705110173464604) internal successors, (3637), 2133 states have internal predecessors, (3637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:29,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2134 states to 2134 states and 3637 transitions. [2021-11-09 08:57:29,350 INFO L78 Accepts]: Start accepts. Automaton has 2134 states and 3637 transitions. Word has length 221 [2021-11-09 08:57:29,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:57:29,350 INFO L470 AbstractCegarLoop]: Abstraction has 2134 states and 3637 transitions. [2021-11-09 08:57:29,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:29,351 INFO L276 IsEmpty]: Start isEmpty. Operand 2134 states and 3637 transitions. [2021-11-09 08:57:29,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-11-09 08:57:29,357 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:57:29,357 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:57:29,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 08:57:29,358 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:57:29,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:57:29,360 INFO L85 PathProgramCache]: Analyzing trace with hash 591971201, now seen corresponding path program 1 times [2021-11-09 08:57:29,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:57:29,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992067766] [2021-11-09 08:57:29,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:57:29,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:57:29,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:57:29,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:57:29,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:57:29,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992067766] [2021-11-09 08:57:29,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992067766] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:57:29,568 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:57:29,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:57:29,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538257783] [2021-11-09 08:57:29,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:57:29,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:57:29,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:57:29,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:57:29,571 INFO L87 Difference]: Start difference. First operand 2134 states and 3637 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:29,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:57:29,728 INFO L93 Difference]: Finished difference Result 5210 states and 8799 transitions. [2021-11-09 08:57:29,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:57:29,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 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 225 [2021-11-09 08:57:29,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:57:29,752 INFO L225 Difference]: With dead ends: 5210 [2021-11-09 08:57:29,753 INFO L226 Difference]: Without dead ends: 3624 [2021-11-09 08:57:29,757 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:57:29,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3624 states. [2021-11-09 08:57:29,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3624 to 3622. [2021-11-09 08:57:29,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3621 states have (on average 1.6904170118751727) internal successors, (6121), 3621 states have internal predecessors, (6121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:29,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 6121 transitions. [2021-11-09 08:57:29,930 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 6121 transitions. Word has length 225 [2021-11-09 08:57:29,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:57:29,931 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 6121 transitions. [2021-11-09 08:57:29,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:29,931 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 6121 transitions. [2021-11-09 08:57:29,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-09 08:57:29,938 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:57:29,939 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:57:29,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 08:57:29,939 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:57:29,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:57:29,940 INFO L85 PathProgramCache]: Analyzing trace with hash -62749882, now seen corresponding path program 1 times [2021-11-09 08:57:29,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:57:29,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268575170] [2021-11-09 08:57:29,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:57:29,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:57:30,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:57:30,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:57:30,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:57:30,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268575170] [2021-11-09 08:57:30,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268575170] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:57:30,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:57:30,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:57:30,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607109866] [2021-11-09 08:57:30,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:57:30,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:57:30,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:57:30,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:57:30,126 INFO L87 Difference]: Start difference. First operand 3622 states and 6121 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:30,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:57:30,404 INFO L93 Difference]: Finished difference Result 9578 states and 16075 transitions. [2021-11-09 08:57:30,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:57:30,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 229 [2021-11-09 08:57:30,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:57:30,447 INFO L225 Difference]: With dead ends: 9578 [2021-11-09 08:57:30,447 INFO L226 Difference]: Without dead ends: 6504 [2021-11-09 08:57:30,454 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:57:30,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6504 states. [2021-11-09 08:57:30,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6504 to 6502. [2021-11-09 08:57:30,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6502 states, 6501 states have (on average 1.6774342408860174) internal successors, (10905), 6501 states have internal predecessors, (10905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:30,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6502 states to 6502 states and 10905 transitions. [2021-11-09 08:57:30,786 INFO L78 Accepts]: Start accepts. Automaton has 6502 states and 10905 transitions. Word has length 229 [2021-11-09 08:57:30,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:57:30,787 INFO L470 AbstractCegarLoop]: Abstraction has 6502 states and 10905 transitions. [2021-11-09 08:57:30,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:30,787 INFO L276 IsEmpty]: Start isEmpty. Operand 6502 states and 10905 transitions. [2021-11-09 08:57:30,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-09 08:57:30,794 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:57:30,795 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:57:30,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 08:57:30,795 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:57:30,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:57:30,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1568385269, now seen corresponding path program 1 times [2021-11-09 08:57:30,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:57:30,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909471154] [2021-11-09 08:57:30,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:57:30,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:57:30,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:57:31,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:57:31,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:57:31,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909471154] [2021-11-09 08:57:31,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909471154] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:57:31,052 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:57:31,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 08:57:31,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857040242] [2021-11-09 08:57:31,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 08:57:31,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:57:31,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 08:57:31,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:57:31,059 INFO L87 Difference]: Start difference. First operand 6502 states and 10905 transitions. Second operand has 7 states, 7 states have (on average 33.285714285714285) internal successors, (233), 7 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:32,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:57:32,538 INFO L93 Difference]: Finished difference Result 28952 states and 48548 transitions. [2021-11-09 08:57:32,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 08:57:32,539 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.285714285714285) internal successors, (233), 7 states have internal predecessors, (233), 0 states have call successors, (0), 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 233 [2021-11-09 08:57:32,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:57:32,675 INFO L225 Difference]: With dead ends: 28952 [2021-11-09 08:57:32,676 INFO L226 Difference]: Without dead ends: 22998 [2021-11-09 08:57:32,694 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-11-09 08:57:32,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22998 states. [2021-11-09 08:57:33,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22998 to 15172. [2021-11-09 08:57:33,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15172 states, 15171 states have (on average 1.6731922747346912) internal successors, (25384), 15171 states have internal predecessors, (25384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:33,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15172 states to 15172 states and 25384 transitions. [2021-11-09 08:57:33,833 INFO L78 Accepts]: Start accepts. Automaton has 15172 states and 25384 transitions. Word has length 233 [2021-11-09 08:57:33,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:57:33,834 INFO L470 AbstractCegarLoop]: Abstraction has 15172 states and 25384 transitions. [2021-11-09 08:57:33,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.285714285714285) internal successors, (233), 7 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:33,835 INFO L276 IsEmpty]: Start isEmpty. Operand 15172 states and 25384 transitions. [2021-11-09 08:57:33,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-09 08:57:33,847 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:57:33,848 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:57:33,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 08:57:33,848 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:57:33,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:57:33,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1446922808, now seen corresponding path program 1 times [2021-11-09 08:57:33,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:57:33,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17906594] [2021-11-09 08:57:33,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:57:33,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:57:33,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:57:34,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:57:34,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:57:34,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17906594] [2021-11-09 08:57:34,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17906594] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:57:34,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:57:34,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:57:34,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286946855] [2021-11-09 08:57:34,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:57:34,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:57:34,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:57:34,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:57:34,030 INFO L87 Difference]: Start difference. First operand 15172 states and 25384 transitions. Second operand has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:35,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:57:35,605 INFO L93 Difference]: Finished difference Result 39956 states and 66952 transitions. [2021-11-09 08:57:35,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:57:35,606 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 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 234 [2021-11-09 08:57:35,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:57:35,712 INFO L225 Difference]: With dead ends: 39956 [2021-11-09 08:57:35,712 INFO L226 Difference]: Without dead ends: 25332 [2021-11-09 08:57:35,744 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:57:35,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25332 states. [2021-11-09 08:57:37,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25332 to 22552. [2021-11-09 08:57:37,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22552 states, 22551 states have (on average 1.6739390714380737) internal successors, (37749), 22551 states have internal predecessors, (37749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:37,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22552 states to 22552 states and 37749 transitions. [2021-11-09 08:57:37,311 INFO L78 Accepts]: Start accepts. Automaton has 22552 states and 37749 transitions. Word has length 234 [2021-11-09 08:57:37,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:57:37,311 INFO L470 AbstractCegarLoop]: Abstraction has 22552 states and 37749 transitions. [2021-11-09 08:57:37,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:37,312 INFO L276 IsEmpty]: Start isEmpty. Operand 22552 states and 37749 transitions. [2021-11-09 08:57:37,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-09 08:57:37,327 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:57:37,328 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:57:37,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 08:57:37,328 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:57:37,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:57:37,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1971995790, now seen corresponding path program 1 times [2021-11-09 08:57:37,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:57:37,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075401918] [2021-11-09 08:57:37,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:57:37,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:57:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:57:37,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:57:37,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:57:37,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075401918] [2021-11-09 08:57:37,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075401918] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:57:37,501 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:57:37,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:57:37,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081564396] [2021-11-09 08:57:37,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:57:37,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:57:37,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:57:37,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:57:37,503 INFO L87 Difference]: Start difference. First operand 22552 states and 37749 transitions. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:39,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:57:39,362 INFO L93 Difference]: Finished difference Result 59476 states and 99604 transitions. [2021-11-09 08:57:39,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:57:39,363 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 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 235 [2021-11-09 08:57:39,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:57:39,488 INFO L225 Difference]: With dead ends: 59476 [2021-11-09 08:57:39,488 INFO L226 Difference]: Without dead ends: 37472 [2021-11-09 08:57:39,529 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:57:39,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37472 states. [2021-11-09 08:57:41,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37472 to 33474. [2021-11-09 08:57:41,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33474 states, 33473 states have (on average 1.671944552325755) internal successors, (55965), 33473 states have internal predecessors, (55965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:41,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33474 states to 33474 states and 55965 transitions. [2021-11-09 08:57:41,404 INFO L78 Accepts]: Start accepts. Automaton has 33474 states and 55965 transitions. Word has length 235 [2021-11-09 08:57:41,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:57:41,405 INFO L470 AbstractCegarLoop]: Abstraction has 33474 states and 55965 transitions. [2021-11-09 08:57:41,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:41,406 INFO L276 IsEmpty]: Start isEmpty. Operand 33474 states and 55965 transitions. [2021-11-09 08:57:41,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-09 08:57:41,428 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:57:41,428 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:57:41,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-09 08:57:41,429 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:57:41,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:57:41,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1509627090, now seen corresponding path program 1 times [2021-11-09 08:57:41,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:57:41,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16753193] [2021-11-09 08:57:41,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:57:41,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:57:41,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:57:41,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:57:41,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:57:41,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16753193] [2021-11-09 08:57:41,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16753193] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:57:41,603 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:57:41,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:57:41,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78712680] [2021-11-09 08:57:41,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:57:41,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:57:41,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:57:41,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:57:41,606 INFO L87 Difference]: Start difference. First operand 33474 states and 55965 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:44,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:57:44,035 INFO L93 Difference]: Finished difference Result 72454 states and 121164 transitions. [2021-11-09 08:57:44,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:57:44,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 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 235 [2021-11-09 08:57:44,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:57:44,209 INFO L225 Difference]: With dead ends: 72454 [2021-11-09 08:57:44,209 INFO L226 Difference]: Without dead ends: 52084 [2021-11-09 08:57:44,248 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:57:44,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52084 states. [2021-11-09 08:57:46,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52084 to 52082. [2021-11-09 08:57:46,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52082 states, 52081 states have (on average 1.6672106910389586) internal successors, (86830), 52081 states have internal predecessors, (86830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:46,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52082 states to 52082 states and 86830 transitions. [2021-11-09 08:57:46,824 INFO L78 Accepts]: Start accepts. Automaton has 52082 states and 86830 transitions. Word has length 235 [2021-11-09 08:57:46,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:57:46,825 INFO L470 AbstractCegarLoop]: Abstraction has 52082 states and 86830 transitions. [2021-11-09 08:57:46,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:46,826 INFO L276 IsEmpty]: Start isEmpty. Operand 52082 states and 86830 transitions. [2021-11-09 08:57:46,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-09 08:57:46,842 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:57:46,843 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:57:46,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-09 08:57:46,843 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:57:46,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:57:46,844 INFO L85 PathProgramCache]: Analyzing trace with hash -2133047208, now seen corresponding path program 1 times [2021-11-09 08:57:46,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:57:46,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141212766] [2021-11-09 08:57:46,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:57:46,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:57:46,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:57:47,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:57:47,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:57:47,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141212766] [2021-11-09 08:57:47,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141212766] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:57:47,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:57:47,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:57:47,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657074782] [2021-11-09 08:57:47,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:57:47,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:57:47,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:57:47,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:57:47,030 INFO L87 Difference]: Start difference. First operand 52082 states and 86830 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:50,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:57:50,562 INFO L93 Difference]: Finished difference Result 99630 states and 166260 transitions. [2021-11-09 08:57:50,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:57:50,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 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 235 [2021-11-09 08:57:50,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:57:50,794 INFO L225 Difference]: With dead ends: 99630 [2021-11-09 08:57:50,794 INFO L226 Difference]: Without dead ends: 72660 [2021-11-09 08:57:50,863 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:57:50,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72660 states. [2021-11-09 08:57:54,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72660 to 72658. [2021-11-09 08:57:54,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72658 states, 72657 states have (on average 1.6640929297934128) internal successors, (120908), 72657 states have internal predecessors, (120908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:54,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72658 states to 72658 states and 120908 transitions. [2021-11-09 08:57:54,401 INFO L78 Accepts]: Start accepts. Automaton has 72658 states and 120908 transitions. Word has length 235 [2021-11-09 08:57:54,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:57:54,402 INFO L470 AbstractCegarLoop]: Abstraction has 72658 states and 120908 transitions. [2021-11-09 08:57:54,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:54,403 INFO L276 IsEmpty]: Start isEmpty. Operand 72658 states and 120908 transitions. [2021-11-09 08:57:54,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-09 08:57:54,416 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:57:54,416 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:57:54,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-09 08:57:54,417 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:57:54,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:57:54,417 INFO L85 PathProgramCache]: Analyzing trace with hash -678490366, now seen corresponding path program 1 times [2021-11-09 08:57:54,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:57:54,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114819754] [2021-11-09 08:57:54,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:57:54,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:57:54,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:57:54,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:57:54,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:57:54,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114819754] [2021-11-09 08:57:54,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114819754] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:57:54,568 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:57:54,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:57:54,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082642258] [2021-11-09 08:57:54,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:57:54,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:57:54,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:57:54,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:57:54,573 INFO L87 Difference]: Start difference. First operand 72658 states and 120908 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:57:58,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:57:58,676 INFO L93 Difference]: Finished difference Result 139370 states and 232204 transitions. [2021-11-09 08:57:58,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:57:58,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 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 235 [2021-11-09 08:57:58,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:57:58,913 INFO L225 Difference]: With dead ends: 139370 [2021-11-09 08:57:58,914 INFO L226 Difference]: Without dead ends: 101198 [2021-11-09 08:57:58,970 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:57:59,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101198 states. [2021-11-09 08:58:04,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101198 to 101196. [2021-11-09 08:58:04,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101196 states, 101195 states have (on average 1.6617915904936014) internal successors, (168165), 101195 states have internal predecessors, (168165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:04,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101196 states to 101196 states and 168165 transitions. [2021-11-09 08:58:04,569 INFO L78 Accepts]: Start accepts. Automaton has 101196 states and 168165 transitions. Word has length 235 [2021-11-09 08:58:04,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:58:04,570 INFO L470 AbstractCegarLoop]: Abstraction has 101196 states and 168165 transitions. [2021-11-09 08:58:04,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:04,570 INFO L276 IsEmpty]: Start isEmpty. Operand 101196 states and 168165 transitions. [2021-11-09 08:58:04,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-09 08:58:04,579 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:58:04,580 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:58:04,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-09 08:58:04,580 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:58:04,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:58:04,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1764769580, now seen corresponding path program 1 times [2021-11-09 08:58:04,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:58:04,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906687745] [2021-11-09 08:58:04,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:58:04,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:58:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:58:04,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:58:04,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:58:04,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906687745] [2021-11-09 08:58:04,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906687745] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:58:04,724 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:58:04,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:58:04,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417967814] [2021-11-09 08:58:04,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:58:04,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:58:04,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:58:04,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:58:04,727 INFO L87 Difference]: Start difference. First operand 101196 states and 168165 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:11,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:58:11,608 INFO L93 Difference]: Finished difference Result 221952 states and 369103 transitions. [2021-11-09 08:58:11,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:58:11,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 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 235 [2021-11-09 08:58:11,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:58:12,142 INFO L225 Difference]: With dead ends: 221952 [2021-11-09 08:58:12,142 INFO L226 Difference]: Without dead ends: 152951 [2021-11-09 08:58:12,229 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:58:12,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152951 states.