/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:14:14,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:14:14,324 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:14:14,360 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:14:14,361 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:14:14,372 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:14:14,374 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:14:14,376 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:14:14,378 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:14:14,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:14:14,381 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:14:14,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:14:14,384 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:14:14,389 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:14:14,392 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:14:14,394 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:14:14,396 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:14:14,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:14:14,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:14:14,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:14:14,409 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:14:14,410 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:14:14,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:14:14,412 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:14:14,416 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:14:14,417 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:14:14,417 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:14:14,420 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:14:14,420 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:14:14,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:14:14,422 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:14:14,423 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:14:14,424 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:14:14,424 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:14:14,426 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:14:14,426 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:14:14,427 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:14:14,427 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:14:14,427 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:14:14,428 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:14:14,430 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:14:14,431 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 20:14:14,471 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:14:14,471 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:14:14,473 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:14:14,474 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:14:14,474 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:14:14,474 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:14:14,474 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:14:14,475 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:14:14,475 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:14:14,475 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:14:14,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:14:14,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:14:14,476 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:14:14,477 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:14:14,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:14:14,477 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:14:14,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:14:14,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:14:14,478 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:14:14,478 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:14:14,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:14:14,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:14:14,479 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:14:14,479 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:14:14,479 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:14:14,479 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:14:14,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:14:14,480 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:14:14,480 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:14:14,480 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 20:14:14,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:14:14,800 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:14:14,803 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:14:14,805 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:14:14,805 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:14:14,806 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-12 20:14:14,866 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fbe4dc2ac/194ec2ce833b4f6c8630c86f79dffe01/FLAG701970f93 [2020-10-12 20:14:15,399 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:14:15,400 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-12 20:14:15,417 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fbe4dc2ac/194ec2ce833b4f6c8630c86f79dffe01/FLAG701970f93 [2020-10-12 20:14:15,711 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fbe4dc2ac/194ec2ce833b4f6c8630c86f79dffe01 [2020-10-12 20:14:15,721 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:14:15,722 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:14:15,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:14:15,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:14:15,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:14:15,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:14:15" (1/1) ... [2020-10-12 20:14:15,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ef601eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:14:15, skipping insertion in model container [2020-10-12 20:14:15,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:14:15" (1/1) ... [2020-10-12 20:14:15,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:14:15,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:14:16,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:14:16,380 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:14:16,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:14:16,883 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:14:16,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:14:16 WrapperNode [2020-10-12 20:14:16,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:14:16,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:14:16,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:14:16,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:14:16,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:14:16" (1/1) ... [2020-10-12 20:14:16,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:14:16" (1/1) ... [2020-10-12 20:14:16,944 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:14:16" (1/1) ... [2020-10-12 20:14:16,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:14:16" (1/1) ... [2020-10-12 20:14:16,988 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:14:16" (1/1) ... [2020-10-12 20:14:17,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:14:16" (1/1) ... [2020-10-12 20:14:17,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:14:16" (1/1) ... [2020-10-12 20:14:17,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:14:17,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:14:17,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:14:17,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:14:17,041 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:14:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:14:17,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:14:17,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:14:17,135 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 20:14:17,135 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:14:17,135 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:14:17,135 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:14:17,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 20:14:17,137 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 20:14:17,137 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 20:14:17,137 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 20:14:17,137 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 20:14:17,137 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 20:14:17,138 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 20:14:17,138 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 20:14:17,138 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 20:14:17,139 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 20:14:17,139 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 20:14:17,139 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:14:17,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:14:17,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:14:18,540 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:14:18,540 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 20:14:18,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:14:18 BoogieIcfgContainer [2020-10-12 20:14:18,548 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:14:18,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:14:18,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:14:18,552 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:14:18,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:14:15" (1/3) ... [2020-10-12 20:14:18,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32ddee48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:14:18, skipping insertion in model container [2020-10-12 20:14:18,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:14:16" (2/3) ... [2020-10-12 20:14:18,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32ddee48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:14:18, skipping insertion in model container [2020-10-12 20:14:18,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:14:18" (3/3) ... [2020-10-12 20:14:18,556 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-12 20:14:18,568 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:14:18,577 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:14:18,593 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:14:18,622 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:14:18,622 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:14:18,622 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:14:18,623 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:14:18,623 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:14:18,623 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:14:18,623 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:14:18,623 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:14:18,650 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states. [2020-10-12 20:14:18,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-12 20:14:18,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:14:18,669 INFO L422 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] [2020-10-12 20:14:18,670 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:14:18,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:14:18,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1777408137, now seen corresponding path program 1 times [2020-10-12 20:14:18,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:14:18,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589031841] [2020-10-12 20:14:18,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:14:19,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:14:19,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:19,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:19,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:20,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:20,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:20,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:20,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:20,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:21,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:21,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:22,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:24,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:14:24,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-12 20:14:24,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:14:24,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-12 20:14:24,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:14:24,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:14:24,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:14:24,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 20:14:24,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 20:14:24,754 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:14:24,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:14:24,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:14:24,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:24,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:14:24,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:14:24,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:14:24,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 20:14:24,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:14:24,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:14:24,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:14:24,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:14:24,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:14:24,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:14:24,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589031841] [2020-10-12 20:14:24,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:14:24,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:14:24,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566635107] [2020-10-12 20:14:24,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:14:24,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:14:24,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:14:24,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:14:24,892 INFO L87 Difference]: Start difference. First operand 336 states. Second operand 5 states. [2020-10-12 20:14:27,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:14:27,984 INFO L93 Difference]: Finished difference Result 957 states and 1680 transitions. [2020-10-12 20:14:27,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:14:27,987 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-12 20:14:27,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:14:28,008 INFO L225 Difference]: With dead ends: 957 [2020-10-12 20:14:28,008 INFO L226 Difference]: Without dead ends: 630 [2020-10-12 20:14:28,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:14:28,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2020-10-12 20:14:28,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 628. [2020-10-12 20:14:28,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-10-12 20:14:28,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 918 transitions. [2020-10-12 20:14:28,136 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 918 transitions. Word has length 151 [2020-10-12 20:14:28,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:14:28,136 INFO L479 AbstractCegarLoop]: Abstraction has 628 states and 918 transitions. [2020-10-12 20:14:28,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:14:28,137 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 918 transitions. [2020-10-12 20:14:28,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-12 20:14:28,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:14:28,147 INFO L422 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] [2020-10-12 20:14:28,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:14:28,147 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:14:28,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:14:28,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1273072056, now seen corresponding path program 1 times [2020-10-12 20:14:28,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:14:28,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855175224] [2020-10-12 20:14:28,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:14:28,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:14:28,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:28,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:28,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:28,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:28,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:28,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:28,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:28,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:29,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:29,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:31,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:33,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:33,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:14:33,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-12 20:14:33,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 20:14:33,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-12 20:14:33,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:14:33,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:14:33,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:14:33,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 20:14:33,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:14:33,593 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:14:33,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:14:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:14:33,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:33,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:14:33,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:14:33,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:14:33,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 20:14:33,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:14:33,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:14:33,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:14:33,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:14:33,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:14:33,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:14:33,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855175224] [2020-10-12 20:14:33,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:14:33,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:14:33,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244860747] [2020-10-12 20:14:33,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:14:33,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:14:33,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:14:33,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:14:33,729 INFO L87 Difference]: Start difference. First operand 628 states and 918 transitions. Second operand 5 states. [2020-10-12 20:14:35,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:14:35,953 INFO L93 Difference]: Finished difference Result 1823 states and 2659 transitions. [2020-10-12 20:14:35,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:14:35,954 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-12 20:14:35,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:14:35,962 INFO L225 Difference]: With dead ends: 1823 [2020-10-12 20:14:35,962 INFO L226 Difference]: Without dead ends: 1206 [2020-10-12 20:14:35,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:14:35,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2020-10-12 20:14:36,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1204. [2020-10-12 20:14:36,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1204 states. [2020-10-12 20:14:36,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 1741 transitions. [2020-10-12 20:14:36,030 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 1741 transitions. Word has length 152 [2020-10-12 20:14:36,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:14:36,030 INFO L479 AbstractCegarLoop]: Abstraction has 1204 states and 1741 transitions. [2020-10-12 20:14:36,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:14:36,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 1741 transitions. [2020-10-12 20:14:36,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-12 20:14:36,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:14:36,035 INFO L422 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] [2020-10-12 20:14:36,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:14:36,035 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:14:36,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:14:36,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1737250475, now seen corresponding path program 1 times [2020-10-12 20:14:36,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:14:36,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101630184] [2020-10-12 20:14:36,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:14:36,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:14:36,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:36,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:36,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:36,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:36,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:36,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:36,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:36,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:37,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:38,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:38,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:38,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:39,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:39,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:41,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:14:41,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-12 20:14:41,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 20:14:41,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 20:14:41,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:14:41,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:14:41,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:14:41,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 20:14:41,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:14:41,431 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:14:41,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:14:41,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:14:41,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:41,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:14:41,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:14:41,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:14:41,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 20:14:41,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:14:41,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:14:41,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:14:41,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:14:41,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:14:41,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:14:41,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101630184] [2020-10-12 20:14:41,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:14:41,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:14:41,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605645270] [2020-10-12 20:14:41,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:14:41,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:14:41,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:14:41,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:14:41,582 INFO L87 Difference]: Start difference. First operand 1204 states and 1741 transitions. Second operand 5 states. [2020-10-12 20:14:44,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:14:44,216 INFO L93 Difference]: Finished difference Result 3464 states and 4989 transitions. [2020-10-12 20:14:44,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:14:44,217 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-12 20:14:44,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:14:44,228 INFO L225 Difference]: With dead ends: 3464 [2020-10-12 20:14:44,229 INFO L226 Difference]: Without dead ends: 2306 [2020-10-12 20:14:44,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:14:44,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2306 states. [2020-10-12 20:14:44,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2306 to 2304. [2020-10-12 20:14:44,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2304 states. [2020-10-12 20:14:44,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2304 states to 2304 states and 3287 transitions. [2020-10-12 20:14:44,344 INFO L78 Accepts]: Start accepts. Automaton has 2304 states and 3287 transitions. Word has length 153 [2020-10-12 20:14:44,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:14:44,344 INFO L479 AbstractCegarLoop]: Abstraction has 2304 states and 3287 transitions. [2020-10-12 20:14:44,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:14:44,344 INFO L276 IsEmpty]: Start isEmpty. Operand 2304 states and 3287 transitions. [2020-10-12 20:14:44,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-12 20:14:44,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:14:44,350 INFO L422 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] [2020-10-12 20:14:44,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:14:44,350 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:14:44,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:14:44,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1692019223, now seen corresponding path program 1 times [2020-10-12 20:14:44,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:14:44,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [400162143] [2020-10-12 20:14:44,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:14:44,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:14:44,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:44,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:44,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:44,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:44,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:44,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:44,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:44,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:46,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:46,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:46,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:46,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:47,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:49,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:14:49,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-12 20:14:49,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 20:14:49,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 20:14:49,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:14:49,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:14:49,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:14:49,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-12 20:14:49,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:14:49,721 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:14:49,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:14:49,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:14:49,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:49,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:14:49,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:14:49,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:14:49,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:14:49,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:14:49,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:14:49,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:14:49,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:14:49,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:14:49,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:14:49,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [400162143] [2020-10-12 20:14:49,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:14:49,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:14:49,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52568179] [2020-10-12 20:14:49,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:14:49,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:14:49,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:14:49,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:14:49,856 INFO L87 Difference]: Start difference. First operand 2304 states and 3287 transitions. Second operand 5 states. [2020-10-12 20:14:52,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:14:52,695 INFO L93 Difference]: Finished difference Result 6600 states and 9359 transitions. [2020-10-12 20:14:52,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:14:52,696 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-12 20:14:52,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:14:52,716 INFO L225 Difference]: With dead ends: 6600 [2020-10-12 20:14:52,716 INFO L226 Difference]: Without dead ends: 4386 [2020-10-12 20:14:52,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:14:52,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4386 states. [2020-10-12 20:14:52,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4386 to 4384. [2020-10-12 20:14:52,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4384 states. [2020-10-12 20:14:52,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4384 states to 4384 states and 6151 transitions. [2020-10-12 20:14:52,941 INFO L78 Accepts]: Start accepts. Automaton has 4384 states and 6151 transitions. Word has length 154 [2020-10-12 20:14:52,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:14:52,944 INFO L479 AbstractCegarLoop]: Abstraction has 4384 states and 6151 transitions. [2020-10-12 20:14:52,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:14:52,944 INFO L276 IsEmpty]: Start isEmpty. Operand 4384 states and 6151 transitions. [2020-10-12 20:14:52,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-12 20:14:52,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:14:52,956 INFO L422 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] [2020-10-12 20:14:52,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:14:52,957 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:14:52,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:14:52,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1125956469, now seen corresponding path program 1 times [2020-10-12 20:14:52,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:14:52,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945925061] [2020-10-12 20:14:52,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:14:52,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:14:53,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:53,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:53,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:53,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:53,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:53,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:53,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:53,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:54,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:54,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:55,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:56,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:14:56,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-12 20:14:56,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:14:56,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3843 [2020-10-12 20:14:56,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:14:56,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:14:56,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:14:56,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 20:14:56,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:14:57,143 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:14:57,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:14:57,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:14:57,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:14:57,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:14:57,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:14:57,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:14:57,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 20:14:57,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:14:57,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:14:57,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:14:57,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:14:57,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:14:57,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:14:57,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945925061] [2020-10-12 20:14:57,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:14:57,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:14:57,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551173852] [2020-10-12 20:14:57,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:14:57,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:14:57,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:14:57,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:14:57,240 INFO L87 Difference]: Start difference. First operand 4384 states and 6151 transitions. Second operand 5 states. [2020-10-12 20:15:00,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:15:00,241 INFO L93 Difference]: Finished difference Result 11679 states and 16430 transitions. [2020-10-12 20:15:00,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:15:00,244 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-12 20:15:00,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:15:00,276 INFO L225 Difference]: With dead ends: 11679 [2020-10-12 20:15:00,276 INFO L226 Difference]: Without dead ends: 8413 [2020-10-12 20:15:00,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:15:00,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8413 states. [2020-10-12 20:15:00,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8413 to 8411. [2020-10-12 20:15:00,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8411 states. [2020-10-12 20:15:00,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8411 states to 8411 states and 11628 transitions. [2020-10-12 20:15:00,717 INFO L78 Accepts]: Start accepts. Automaton has 8411 states and 11628 transitions. Word has length 155 [2020-10-12 20:15:00,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:15:00,717 INFO L479 AbstractCegarLoop]: Abstraction has 8411 states and 11628 transitions. [2020-10-12 20:15:00,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:15:00,717 INFO L276 IsEmpty]: Start isEmpty. Operand 8411 states and 11628 transitions. [2020-10-12 20:15:00,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-12 20:15:00,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:15:00,732 INFO L422 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] [2020-10-12 20:15:00,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:15:00,733 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:15:00,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:15:00,733 INFO L82 PathProgramCache]: Analyzing trace with hash 2067146888, now seen corresponding path program 1 times [2020-10-12 20:15:00,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:15:00,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [624698570] [2020-10-12 20:15:00,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:15:00,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:15:00,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:00,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:00,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:00,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:01,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:01,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:01,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:15:01,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-12 20:15:01,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:15:01,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1032 [2020-10-12 20:15:01,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:15:01,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:15:01,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:15:01,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-12 20:15:01,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:15:02,159 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:15:02,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:15:02,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:15:02,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:02,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:15:02,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:15:02,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:15:02,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:15:02,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:15:02,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:15:02,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:15:02,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:15:02,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:15:02,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:15:02,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [624698570] [2020-10-12 20:15:02,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:15:02,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:15:02,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041304607] [2020-10-12 20:15:02,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:15:02,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:15:02,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:15:02,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:15:02,310 INFO L87 Difference]: Start difference. First operand 8411 states and 11628 transitions. Second operand 5 states. [2020-10-12 20:15:05,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:15:05,217 INFO L93 Difference]: Finished difference Result 24262 states and 33422 transitions. [2020-10-12 20:15:05,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:15:05,217 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-12 20:15:05,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:15:05,267 INFO L225 Difference]: With dead ends: 24262 [2020-10-12 20:15:05,268 INFO L226 Difference]: Without dead ends: 16186 [2020-10-12 20:15:05,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:15:05,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16186 states. [2020-10-12 20:15:06,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16186 to 16184. [2020-10-12 20:15:06,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16184 states. [2020-10-12 20:15:06,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16184 states to 16184 states and 22003 transitions. [2020-10-12 20:15:06,040 INFO L78 Accepts]: Start accepts. Automaton has 16184 states and 22003 transitions. Word has length 156 [2020-10-12 20:15:06,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:15:06,040 INFO L479 AbstractCegarLoop]: Abstraction has 16184 states and 22003 transitions. [2020-10-12 20:15:06,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:15:06,041 INFO L276 IsEmpty]: Start isEmpty. Operand 16184 states and 22003 transitions. [2020-10-12 20:15:06,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-12 20:15:06,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:15:06,068 INFO L422 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] [2020-10-12 20:15:06,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:15:06,069 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:15:06,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:15:06,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1675500588, now seen corresponding path program 1 times [2020-10-12 20:15:06,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:15:06,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941728351] [2020-10-12 20:15:06,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:15:06,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:15:06,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:06,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:15:06,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-12 20:15:06,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:15:06,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-12 20:15:06,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:15:06,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:15:06,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-12 20:15:06,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-12 20:15:06,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:15:06,626 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:15:06,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:15:06,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:15:06,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:06,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:15:06,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:15:06,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:15:06,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:15:06,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:15:06,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:15:06,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:15:06,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:15:06,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:15:06,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:15:06,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941728351] [2020-10-12 20:15:06,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:15:06,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:15:06,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347505783] [2020-10-12 20:15:06,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:15:06,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:15:06,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:15:06,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:15:06,717 INFO L87 Difference]: Start difference. First operand 16184 states and 22003 transitions. Second operand 4 states. [2020-10-12 20:15:07,035 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-12 20:15:09,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:15:09,307 INFO L93 Difference]: Finished difference Result 29516 states and 41925 transitions. [2020-10-12 20:15:09,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:15:09,308 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2020-10-12 20:15:09,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:15:09,361 INFO L225 Difference]: With dead ends: 29516 [2020-10-12 20:15:09,361 INFO L226 Difference]: Without dead ends: 24202 [2020-10-12 20:15:09,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:15:09,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24202 states. [2020-10-12 20:15:11,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24202 to 24200. [2020-10-12 20:15:11,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24200 states. [2020-10-12 20:15:11,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24200 states to 24200 states and 33347 transitions. [2020-10-12 20:15:11,210 INFO L78 Accepts]: Start accepts. Automaton has 24200 states and 33347 transitions. Word has length 157 [2020-10-12 20:15:11,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:15:11,210 INFO L479 AbstractCegarLoop]: Abstraction has 24200 states and 33347 transitions. [2020-10-12 20:15:11,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:15:11,211 INFO L276 IsEmpty]: Start isEmpty. Operand 24200 states and 33347 transitions. [2020-10-12 20:15:11,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-12 20:15:11,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:15:11,243 INFO L422 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] [2020-10-12 20:15:11,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:15:11,243 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:15:11,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:15:11,243 INFO L82 PathProgramCache]: Analyzing trace with hash 725013288, now seen corresponding path program 1 times [2020-10-12 20:15:11,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:15:11,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940157248] [2020-10-12 20:15:11,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:15:11,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 20:15:11,292 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 20:15:11,292 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 20:15:11,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:15:11,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 08:15:11 BoogieIcfgContainer [2020-10-12 20:15:11,352 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 20:15:11,354 INFO L168 Benchmark]: Toolchain (without parser) took 55631.86 ms. Allocated memory was 138.9 MB in the beginning and 1.3 GB in the end (delta: 1.2 GB). Free memory was 100.6 MB in the beginning and 864.0 MB in the end (delta: -763.4 MB). Peak memory consumption was 413.1 MB. Max. memory is 7.1 GB. [2020-10-12 20:15:11,356 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-12 20:15:11,357 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1162.27 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 100.2 MB in the beginning and 164.4 MB in the end (delta: -64.3 MB). Peak memory consumption was 30.5 MB. Max. memory is 7.1 GB. [2020-10-12 20:15:11,358 INFO L168 Benchmark]: Boogie Preprocessor took 151.86 ms. Allocated memory is still 201.9 MB. Free memory was 164.4 MB in the beginning and 160.0 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-10-12 20:15:11,365 INFO L168 Benchmark]: RCFGBuilder took 1509.41 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 160.0 MB in the beginning and 141.3 MB in the end (delta: 18.8 MB). Peak memory consumption was 80.1 MB. Max. memory is 7.1 GB. [2020-10-12 20:15:11,366 INFO L168 Benchmark]: TraceAbstraction took 52803.44 ms. Allocated memory was 233.8 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 141.3 MB in the beginning and 864.0 MB in the end (delta: -722.7 MB). Peak memory consumption was 358.9 MB. Max. memory is 7.1 GB. [2020-10-12 20:15:11,370 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1162.27 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 100.2 MB in the beginning and 164.4 MB in the end (delta: -64.3 MB). Peak memory consumption was 30.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 151.86 ms. Allocated memory is still 201.9 MB. Free memory was 164.4 MB in the beginning and 160.0 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1509.41 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 160.0 MB in the beginning and 141.3 MB in the end (delta: 18.8 MB). Peak memory consumption was 80.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 52803.44 ms. Allocated memory was 233.8 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 141.3 MB in the beginning and 864.0 MB in the end (delta: -722.7 MB). Peak memory consumption was 358.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 891]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L14] msg_t nomsg = (msg_t )-1; [L15] port_t p12 = 0; [L16] char p12_old = '\x0'; [L17] char p12_new = '\x0'; [L18] _Bool ep12 = 0; [L19] port_t p13 = 0; [L20] char p13_old = '\x0'; [L21] char p13_new = '\x0'; [L22] _Bool ep13 = 0; [L23] port_t p21 = 0; [L24] char p21_old = '\x0'; [L25] char p21_new = '\x0'; [L26] _Bool ep21 = 0; [L27] port_t p23 = 0; [L28] char p23_old = '\x0'; [L29] char p23_new = '\x0'; [L30] _Bool ep23 = 0; [L31] port_t p31 = 0; [L32] char p31_old = '\x0'; [L33] char p31_new = '\x0'; [L34] _Bool ep31 = 0; [L35] port_t p32 = 0; [L36] char p32_old = '\x0'; [L37] char p32_new = '\x0'; [L38] _Bool ep32 = 0; [L39] char id1 = '\x0'; [L40] char r1 = '\x0'; [L41] char st1 = '\x0'; [L42] char nl1 = '\x0'; [L43] char m1 = '\x0'; [L44] char max1 = '\x0'; [L45] _Bool mode1 = 0; [L46] _Bool newmax1 = 0; [L47] char id2 = '\x0'; [L48] char r2 = '\x0'; [L49] char st2 = '\x0'; [L50] char nl2 = '\x0'; [L51] char m2 = '\x0'; [L52] char max2 = '\x0'; [L53] _Bool mode2 = 0; [L54] _Bool newmax2 = 0; [L55] char id3 = '\x0'; [L56] char r3 = '\x0'; [L57] char st3 = '\x0'; [L58] char nl3 = '\x0'; [L59] char m3 = '\x0'; [L60] char max3 = '\x0'; [L61] _Bool mode3 = 0; [L62] _Bool newmax3 = 0; [L66] void (*nodes[3])() = { &node1, &node2, &node3 }; [L70] int __return_1863; [L71] int __return_2009; [L72] int __return_2142; [L73] int __return_2281; [L74] int __return_2419; [L75] int __tmp_2420_0; [L76] int __return_2543; [L77] int __return_2433; [L80] int main__c1; [L81] int main__i2; [L82] main__c1 = 0 [L83] ep12 = __VERIFIER_nondet_bool() [L84] ep13 = __VERIFIER_nondet_bool() [L85] ep21 = __VERIFIER_nondet_bool() [L86] ep23 = __VERIFIER_nondet_bool() [L87] ep31 = __VERIFIER_nondet_bool() [L88] ep32 = __VERIFIER_nondet_bool() [L89] id1 = __VERIFIER_nondet_char() [L90] r1 = __VERIFIER_nondet_char() [L91] st1 = __VERIFIER_nondet_char() [L92] nl1 = __VERIFIER_nondet_char() [L93] m1 = __VERIFIER_nondet_char() [L94] max1 = __VERIFIER_nondet_char() [L95] mode1 = __VERIFIER_nondet_bool() [L96] newmax1 = __VERIFIER_nondet_bool() [L97] id2 = __VERIFIER_nondet_char() [L98] r2 = __VERIFIER_nondet_char() [L99] st2 = __VERIFIER_nondet_char() [L100] nl2 = __VERIFIER_nondet_char() [L101] m2 = __VERIFIER_nondet_char() [L102] max2 = __VERIFIER_nondet_char() [L103] mode2 = __VERIFIER_nondet_bool() [L104] newmax2 = __VERIFIER_nondet_bool() [L105] id3 = __VERIFIER_nondet_char() [L106] r3 = __VERIFIER_nondet_char() [L107] st3 = __VERIFIER_nondet_char() [L108] nl3 = __VERIFIER_nondet_char() [L109] m3 = __VERIFIER_nondet_char() [L110] max3 = __VERIFIER_nondet_char() [L111] mode3 = __VERIFIER_nondet_bool() [L112] newmax3 = __VERIFIER_nondet_bool() [L114] _Bool init__r121; [L115] _Bool init__r131; [L116] _Bool init__r211; [L117] _Bool init__r231; [L118] _Bool init__r311; [L119] _Bool init__r321; [L120] _Bool init__r122; [L121] int init__tmp; [L122] _Bool init__r132; [L123] int init__tmp___0; [L124] _Bool init__r212; [L125] int init__tmp___1; [L126] _Bool init__r232; [L127] int init__tmp___2; [L128] _Bool init__r312; [L129] int init__tmp___3; [L130] _Bool init__r322; [L131] int init__tmp___4; [L132] int init__tmp___5; [L133] init__r121 = ep12 [L134] init__r131 = ep13 [L135] init__r211 = ep21 [L136] init__r231 = ep23 [L137] init__r311 = ep31 [L138] init__r321 = ep32 [L139] COND FALSE !(!(init__r121 == 0)) [L2433] COND FALSE !(!(init__r131 == 0)) [L2449] init__tmp = 0 [L143] init__r122 = (_Bool)init__tmp [L144] COND FALSE !(!(init__r131 == 0)) [L2410] COND FALSE !(!(init__r121 == 0)) [L2426] init__tmp___0 = 0 [L148] init__r132 = (_Bool)init__tmp___0 [L149] COND FALSE !(!(init__r211 == 0)) [L2387] COND FALSE !(!(init__r231 == 0)) [L2403] init__tmp___1 = 0 [L153] init__r212 = (_Bool)init__tmp___1 [L154] COND FALSE !(!(init__r231 == 0)) [L2364] COND FALSE !(!(init__r211 == 0)) [L2380] init__tmp___2 = 0 [L158] init__r232 = (_Bool)init__tmp___2 [L159] COND FALSE !(!(init__r311 == 0)) [L2341] COND FALSE !(!(init__r321 == 0)) [L2357] init__tmp___3 = 0 [L163] init__r312 = (_Bool)init__tmp___3 [L164] COND FALSE !(!(init__r321 == 0)) [L2318] COND FALSE !(!(init__r311 == 0)) [L2334] init__tmp___4 = 0 [L168] init__r322 = (_Bool)init__tmp___4 [L169] COND TRUE ((int)id1) != ((int)id2) [L171] COND TRUE ((int)id1) != ((int)id3) [L173] COND TRUE ((int)id2) != ((int)id3) [L175] COND TRUE ((int)id1) >= 0 [L177] COND TRUE ((int)id2) >= 0 [L179] COND TRUE ((int)id3) >= 0 [L181] COND TRUE ((int)r1) == 0 [L183] COND TRUE ((int)r2) == 0 [L185] COND TRUE ((int)r3) == 0 [L187] COND TRUE ((int)max1) == ((int)id1) [L189] COND TRUE ((int)max2) == ((int)id2) [L191] COND TRUE ((int)max3) == ((int)id3) [L193] COND TRUE ((int)st1) == 0 [L195] COND TRUE ((int)st2) == 0 [L197] COND TRUE ((int)st3) == 0 [L199] COND TRUE ((int)nl1) == 0 [L201] COND TRUE ((int)nl2) == 0 [L203] COND TRUE ((int)nl3) == 0 [L205] COND TRUE ((int)mode1) == 0 [L207] COND TRUE ((int)mode2) == 0 [L209] COND TRUE ((int)mode3) == 0 [L211] COND TRUE !(newmax1 == 0) [L213] COND TRUE !(newmax2 == 0) [L215] COND TRUE !(newmax3 == 0) [L217] init__tmp___5 = 1 [L218] __return_1863 = init__tmp___5 [L219] main__i2 = __return_1863 [L220] COND TRUE main__i2 != 0 [L222] p12_old = nomsg [L223] p12_new = nomsg [L224] p13_old = nomsg [L225] p13_new = nomsg [L226] p21_old = nomsg [L227] p21_new = nomsg [L228] p23_old = nomsg [L229] p23_new = nomsg [L230] p31_old = nomsg [L231] p31_new = nomsg [L232] p32_old = nomsg [L233] p32_new = nomsg [L234] main__i2 = 0 [L235] COND TRUE main__i2 < 6 [L238] _Bool node1__newmax; [L239] node1__newmax = 0 [L240] COND FALSE !(!(mode1 == 0)) [L246] COND TRUE ((int)r1) < 2 [L248] COND FALSE !(!(ep12 == 0)) [L261] COND FALSE !(!(ep13 == 0)) [L274] mode1 = 1 [L276] _Bool node2__newmax; [L277] node2__newmax = 0 [L278] COND FALSE !(!(mode2 == 0)) [L284] COND TRUE ((int)r2) < 2 [L286] COND FALSE !(!(ep21 == 0)) [L299] COND FALSE !(!(ep23 == 0)) [L312] mode2 = 1 [L314] _Bool node3__newmax; [L315] node3__newmax = 0 [L316] COND FALSE !(!(mode3 == 0)) [L322] COND TRUE ((int)r3) < 2 [L324] COND FALSE !(!(ep31 == 0)) [L337] COND FALSE !(!(ep32 == 0)) [L350] mode3 = 1 [L351] p12_old = p12_new [L352] p12_new = nomsg [L353] p13_old = p13_new [L354] p13_new = nomsg [L355] p21_old = p21_new [L356] p21_new = nomsg [L357] p23_old = p23_new [L358] p23_new = nomsg [L359] p31_old = p31_new [L360] p31_new = nomsg [L361] p32_old = p32_new [L362] p32_new = nomsg [L364] int check__tmp; [L365] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L367] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L369] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L371] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L373] COND FALSE !(((int)r1) >= 2) [L379] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L381] COND TRUE ((int)r1) < 2 [L383] COND FALSE !(((int)r1) >= 2) [L389] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L391] COND TRUE ((int)r1) < 2 [L393] check__tmp = 1 [L394] __return_2009 = check__tmp [L395] main__c1 = __return_2009 [L397] _Bool __tmp_1; [L398] __tmp_1 = main__c1 [L399] _Bool assert__arg; [L400] assert__arg = __tmp_1 [L401] COND FALSE !(assert__arg == 0) [L407] int main____CPAchecker_TMP_0 = main__i2; [L408] main__i2 = main__i2 + 1 [L409] COND TRUE main__i2 < 6 [L412] _Bool node1__newmax; [L413] node1__newmax = 0 [L414] COND TRUE !(mode1 == 0) [L416] r1 = (char)(((int)r1) + 1) [L417] COND FALSE !(!(ep21 == 0)) [L426] COND FALSE !(!(ep31 == 0)) [L435] newmax1 = node1__newmax [L436] COND FALSE !(((int)r1) == 2) [L442] mode1 = 0 [L444] _Bool node2__newmax; [L445] node2__newmax = 0 [L446] COND TRUE !(mode2 == 0) [L448] r2 = (char)(((int)r2) + 1) [L449] COND FALSE !(!(ep12 == 0)) [L458] COND FALSE !(!(ep32 == 0)) [L467] newmax2 = node2__newmax [L468] COND FALSE !(((int)r2) == 2) [L474] mode2 = 0 [L476] _Bool node3__newmax; [L477] node3__newmax = 0 [L478] COND TRUE !(mode3 == 0) [L480] r3 = (char)(((int)r3) + 1) [L481] COND FALSE !(!(ep13 == 0)) [L490] COND FALSE !(!(ep23 == 0)) [L499] newmax3 = node3__newmax [L500] COND FALSE !(((int)r3) == 2) [L506] mode3 = 0 [L507] p12_old = p12_new [L508] p12_new = nomsg [L509] p13_old = p13_new [L510] p13_new = nomsg [L511] p21_old = p21_new [L512] p21_new = nomsg [L513] p23_old = p23_new [L514] p23_new = nomsg [L515] p31_old = p31_new [L516] p31_new = nomsg [L517] p32_old = p32_new [L518] p32_new = nomsg [L520] int check__tmp; [L521] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L523] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L525] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L527] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L529] COND FALSE !(((int)r1) >= 2) [L535] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L537] COND TRUE ((int)r1) < 2 [L539] COND FALSE !(((int)r1) >= 2) [L545] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L547] COND TRUE ((int)r1) < 2 [L549] check__tmp = 1 [L550] __return_2142 = check__tmp [L551] main__c1 = __return_2142 [L553] _Bool __tmp_2; [L554] __tmp_2 = main__c1 [L555] _Bool assert__arg; [L556] assert__arg = __tmp_2 [L557] COND FALSE !(assert__arg == 0) [L563] int main____CPAchecker_TMP_0 = main__i2; [L564] main__i2 = main__i2 + 1 [L565] COND TRUE main__i2 < 6 [L568] _Bool node1__newmax; [L569] node1__newmax = 0 [L570] COND FALSE !(!(mode1 == 0)) [L576] COND TRUE ((int)r1) < 2 [L578] COND FALSE !(!(ep12 == 0)) [L591] COND FALSE !(!(ep13 == 0)) [L604] mode1 = 1 [L606] _Bool node2__newmax; [L607] node2__newmax = 0 [L608] COND FALSE !(!(mode2 == 0)) [L614] COND TRUE ((int)r2) < 2 [L616] COND FALSE !(!(ep21 == 0)) [L629] COND FALSE !(!(ep23 == 0)) [L642] mode2 = 1 [L644] _Bool node3__newmax; [L645] node3__newmax = 0 [L646] COND FALSE !(!(mode3 == 0)) [L652] COND TRUE ((int)r3) < 2 [L654] COND FALSE !(!(ep31 == 0)) [L667] COND FALSE !(!(ep32 == 0)) [L680] mode3 = 1 [L681] p12_old = p12_new [L682] p12_new = nomsg [L683] p13_old = p13_new [L684] p13_new = nomsg [L685] p21_old = p21_new [L686] p21_new = nomsg [L687] p23_old = p23_new [L688] p23_new = nomsg [L689] p31_old = p31_new [L690] p31_new = nomsg [L691] p32_old = p32_new [L692] p32_new = nomsg [L694] int check__tmp; [L695] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L697] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L699] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L701] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L703] COND FALSE !(((int)r1) >= 2) [L709] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L711] COND TRUE ((int)r1) < 2 [L713] COND FALSE !(((int)r1) >= 2) [L719] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L721] COND TRUE ((int)r1) < 2 [L723] check__tmp = 1 [L724] __return_2281 = check__tmp [L725] main__c1 = __return_2281 [L727] _Bool __tmp_3; [L728] __tmp_3 = main__c1 [L729] _Bool assert__arg; [L730] assert__arg = __tmp_3 [L731] COND FALSE !(assert__arg == 0) [L737] int main____CPAchecker_TMP_0 = main__i2; [L738] main__i2 = main__i2 + 1 [L739] COND TRUE main__i2 < 6 [L742] _Bool node1__newmax; [L743] node1__newmax = 0 [L744] COND TRUE !(mode1 == 0) [L746] r1 = (char)(((int)r1) + 1) [L747] COND FALSE !(!(ep21 == 0)) [L756] COND FALSE !(!(ep31 == 0)) [L765] newmax1 = node1__newmax [L766] COND TRUE ((int)r1) == 2 [L768] COND TRUE ((int)max1) == ((int)id1) [L770] st1 = 1 [L772] mode1 = 0 [L774] _Bool node2__newmax; [L775] node2__newmax = 0 [L776] COND TRUE !(mode2 == 0) [L778] r2 = (char)(((int)r2) + 1) [L779] COND FALSE !(!(ep12 == 0)) [L788] COND FALSE !(!(ep32 == 0)) [L797] newmax2 = node2__newmax [L798] COND TRUE ((int)r2) == 2 [L800] COND TRUE ((int)max2) == ((int)id2) [L802] st2 = 1 [L804] mode2 = 0 [L806] _Bool node3__newmax; [L807] node3__newmax = 0 [L808] COND TRUE !(mode3 == 0) [L810] r3 = (char)(((int)r3) + 1) [L811] COND FALSE !(!(ep13 == 0)) [L820] COND FALSE !(!(ep23 == 0)) [L829] newmax3 = node3__newmax [L830] COND TRUE ((int)r3) == 2 [L832] COND TRUE ((int)max3) == ((int)id3) [L834] st3 = 1 [L836] mode3 = 0 [L837] p12_old = p12_new [L838] p12_new = nomsg [L839] p13_old = p13_new [L840] p13_new = nomsg [L841] p21_old = p21_new [L842] p21_new = nomsg [L843] p23_old = p23_new [L844] p23_new = nomsg [L845] p31_old = p31_new [L846] p31_new = nomsg [L847] p32_old = p32_new [L848] p32_new = nomsg [L850] int check__tmp; [L851] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L1533] check__tmp = 0 [L879] __return_2419 = check__tmp [L880] main__c1 = __return_2419 [L881] __tmp_2420_0 = main____CPAchecker_TMP_0 [L883] main____CPAchecker_TMP_0 = __tmp_2420_0 [L885] _Bool __tmp_4; [L886] __tmp_4 = main__c1 [L887] _Bool assert__arg; [L888] assert__arg = __tmp_4 [L889] COND TRUE assert__arg == 0 [L891] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 340 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 52.6s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 19.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5438 SDtfs, 6179 SDslu, 3101 SDs, 0 SdLazy, 5879 SolverSat, 100 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24200occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.5s AutomataMinimizationTime, 7 MinimizatonAttempts, 14 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 27.9s InterpolantComputationTime, 1235 NumberOfCodeBlocks, 1235 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1071 ConstructedInterpolants, 0 QuantifiedInterpolants, 1093575 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...