/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.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:15:08,559 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:15:08,562 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:15:08,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:15:08,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:15:08,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:15:08,608 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:15:08,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:15:08,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:15:08,616 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:15:08,616 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:15:08,618 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:15:08,618 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:15:08,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:15:08,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:15:08,625 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:15:08,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:15:08,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:15:08,629 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:15:08,636 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:15:08,637 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:15:08,639 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:15:08,639 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:15:08,640 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:15:08,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:15:08,652 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:15:08,654 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:15:08,655 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:15:08,655 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:15:08,659 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:15:08,660 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:15:08,660 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:15:08,661 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:15:08,662 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:15:08,665 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:15:08,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:15:08,666 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:15:08,667 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:15:08,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:15:08,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:15:08,668 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:15:08,669 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 20:15:08,706 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:15:08,706 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:15:08,707 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:15:08,708 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:15:08,708 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:15:08,708 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:15:08,708 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:15:08,709 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:15:08,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:15:08,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:15:08,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:15:08,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:15:08,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:15:08,711 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:15:08,711 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:15:08,711 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:15:08,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:15:08,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:15:08,712 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:15:08,712 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:15:08,712 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:15:08,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:15:08,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:15:08,712 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:15:08,712 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:15:08,713 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:15:08,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:15:08,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:15:08,713 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:15:08,713 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 20:15:09,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:15:09,035 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:15:09,040 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:15:09,042 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:15:09,043 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:15:09,044 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 20:15:09,114 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9329bee0e/3265ab44b4d04035a9769827d3aa27c0/FLAG32ea4cb37 [2020-10-12 20:15:09,616 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:15:09,616 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 20:15:09,634 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9329bee0e/3265ab44b4d04035a9769827d3aa27c0/FLAG32ea4cb37 [2020-10-12 20:15:09,903 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9329bee0e/3265ab44b4d04035a9769827d3aa27c0 [2020-10-12 20:15:09,911 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:15:09,912 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:15:09,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:15:09,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:15:09,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:15:09,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:15:09" (1/1) ... [2020-10-12 20:15:09,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f99d7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:15:09, skipping insertion in model container [2020-10-12 20:15:09,920 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:15:09" (1/1) ... [2020-10-12 20:15:09,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:15:09,984 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:15:10,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:15:10,549 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:15:10,922 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:15:10,947 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:15:10,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:15:10 WrapperNode [2020-10-12 20:15:10,950 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:15:10,950 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:15:10,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:15:10,951 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:15:10,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:15:10" (1/1) ... [2020-10-12 20:15:10,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:15:10" (1/1) ... [2020-10-12 20:15:10,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:15:10" (1/1) ... [2020-10-12 20:15:10,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:15:10" (1/1) ... [2020-10-12 20:15:11,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:15:10" (1/1) ... [2020-10-12 20:15:11,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:15:10" (1/1) ... [2020-10-12 20:15:11,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:15:10" (1/1) ... [2020-10-12 20:15:11,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:15:11,068 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:15:11,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:15:11,069 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:15:11,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:15:10" (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 20:15:11,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:15:11,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:15:11,147 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 20:15:11,147 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:15:11,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:15:11,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:15:11,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 20:15:11,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 20:15:11,149 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 20:15:11,149 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 20:15:11,149 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 20:15:11,150 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 20:15:11,150 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 20:15:11,150 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 20:15:11,150 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 20:15:11,151 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 20:15:11,151 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 20:15:11,151 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 20:15:11,152 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:15:11,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:15:11,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:15:12,539 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:15:12,539 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 20:15:12,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:15:12 BoogieIcfgContainer [2020-10-12 20:15:12,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:15:12,547 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:15:12,547 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:15:12,550 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:15:12,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:15:09" (1/3) ... [2020-10-12 20:15:12,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b8abcec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:15:12, skipping insertion in model container [2020-10-12 20:15:12,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:15:10" (2/3) ... [2020-10-12 20:15:12,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b8abcec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:15:12, skipping insertion in model container [2020-10-12 20:15:12,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:15:12" (3/3) ... [2020-10-12 20:15:12,555 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 20:15:12,565 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:15:12,573 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:15:12,587 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:15:12,613 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:15:12,613 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:15:12,613 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:15:12,613 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:15:12,614 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:15:12,614 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:15:12,614 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:15:12,614 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:15:12,638 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states. [2020-10-12 20:15:12,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-12 20:15:12,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:15:12,654 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 20:15:12,655 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:15:12,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:15:12,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1057297283, now seen corresponding path program 1 times [2020-10-12 20:15:12,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:15:12,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224815593] [2020-10-12 20:15:12,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:15:13,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:15:13,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:13,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:13,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:13,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:14,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:14,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:14,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:14,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:14,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:14,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:14,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:15,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:15,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:17,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:18,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:15:18,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-12 20:15:18,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 20:15:18,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-12 20:15:18,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:15:18,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:15:18,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:15:18,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 20:15:18,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:15:18,415 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:15:18,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:15:18,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:15:18,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:18,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:15:18,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:15:18,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:15:18,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 20:15:18,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:15:18,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:15:18,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:15:18,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:15:18,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:15:18,494 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 20:15:18,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224815593] [2020-10-12 20:15:18,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:15:18,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:15:18,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043834558] [2020-10-12 20:15:18,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:15:18,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:15:18,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:15:18,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:15:18,520 INFO L87 Difference]: Start difference. First operand 343 states. Second operand 5 states. [2020-10-12 20:15:21,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:15:21,286 INFO L93 Difference]: Finished difference Result 972 states and 1703 transitions. [2020-10-12 20:15:21,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:15:21,293 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-12 20:15:21,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:15:21,314 INFO L225 Difference]: With dead ends: 972 [2020-10-12 20:15:21,314 INFO L226 Difference]: Without dead ends: 642 [2020-10-12 20:15:21,320 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 20:15:21,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-10-12 20:15:21,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 640. [2020-10-12 20:15:21,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 640 states. [2020-10-12 20:15:21,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 935 transitions. [2020-10-12 20:15:21,419 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 935 transitions. Word has length 153 [2020-10-12 20:15:21,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:15:21,420 INFO L479 AbstractCegarLoop]: Abstraction has 640 states and 935 transitions. [2020-10-12 20:15:21,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:15:21,420 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 935 transitions. [2020-10-12 20:15:21,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-12 20:15:21,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:15:21,426 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 20:15:21,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:15:21,427 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:15:21,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:15:21,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1777937597, now seen corresponding path program 1 times [2020-10-12 20:15:21,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:15:21,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885211737] [2020-10-12 20:15:21,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:15:21,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:15:21,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:21,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:21,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:21,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:21,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:21,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:21,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:22,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:22,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:22,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:22,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:24,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:24,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:24,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:24,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:26,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:15:26,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-12 20:15:26,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 20:15:26,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 20:15:26,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:15:26,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:15:26,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:15:26,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 20:15:26,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:15:26,808 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:15:26,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:15:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:15:26,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:26,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:15:26,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:15:26,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:15:26,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 20:15:26,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:15:26,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:15:26,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:15:26,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:15:26,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:15:26,882 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 20:15:26,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885211737] [2020-10-12 20:15:26,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:15:26,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:15:26,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33144746] [2020-10-12 20:15:26,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:15:26,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:15:26,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:15:26,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:15:26,887 INFO L87 Difference]: Start difference. First operand 640 states and 935 transitions. Second operand 5 states. [2020-10-12 20:15:29,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:15:29,247 INFO L93 Difference]: Finished difference Result 1837 states and 2672 transitions. [2020-10-12 20:15:29,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:15:29,248 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-12 20:15:29,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:15:29,255 INFO L225 Difference]: With dead ends: 1837 [2020-10-12 20:15:29,256 INFO L226 Difference]: Without dead ends: 1229 [2020-10-12 20:15:29,259 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 20:15:29,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2020-10-12 20:15:29,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1227. [2020-10-12 20:15:29,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1227 states. [2020-10-12 20:15:29,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1770 transitions. [2020-10-12 20:15:29,329 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1770 transitions. Word has length 154 [2020-10-12 20:15:29,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:15:29,330 INFO L479 AbstractCegarLoop]: Abstraction has 1227 states and 1770 transitions. [2020-10-12 20:15:29,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:15:29,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1770 transitions. [2020-10-12 20:15:29,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-12 20:15:29,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:15:29,337 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 20:15:29,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:15:29,338 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:15:29,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:15:29,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1987290790, now seen corresponding path program 1 times [2020-10-12 20:15:29,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:15:29,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [64886520] [2020-10-12 20:15:29,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:15:29,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:15:29,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:29,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:29,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:29,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:29,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:29,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:29,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:29,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:29,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:30,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:30,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:30,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:30,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:30,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:34,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:15:34,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-12 20:15:34,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 20:15:34,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 20:15:34,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:15:34,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:15:34,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:15:34,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 20:15:34,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:15:34,786 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:15:34,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:15:34,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:15:34,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:34,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:15:34,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:15:34,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:15:34,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 20:15:34,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:15:34,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:15:34,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:15:34,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:15:34,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:15:34,921 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 20:15:34,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [64886520] [2020-10-12 20:15:34,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:15:34,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:15:34,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735099295] [2020-10-12 20:15:34,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:15:34,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:15:34,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:15:34,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:15:34,927 INFO L87 Difference]: Start difference. First operand 1227 states and 1770 transitions. Second operand 5 states. [2020-10-12 20:15:37,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:15:37,406 INFO L93 Difference]: Finished difference Result 3523 states and 5055 transitions. [2020-10-12 20:15:37,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:15:37,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-12 20:15:37,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:15:37,423 INFO L225 Difference]: With dead ends: 3523 [2020-10-12 20:15:37,423 INFO L226 Difference]: Without dead ends: 2343 [2020-10-12 20:15:37,426 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 20:15:37,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2343 states. [2020-10-12 20:15:37,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2343 to 2341. [2020-10-12 20:15:37,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2341 states. [2020-10-12 20:15:37,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2341 states to 2341 states and 3328 transitions. [2020-10-12 20:15:37,544 INFO L78 Accepts]: Start accepts. Automaton has 2341 states and 3328 transitions. Word has length 155 [2020-10-12 20:15:37,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:15:37,544 INFO L479 AbstractCegarLoop]: Abstraction has 2341 states and 3328 transitions. [2020-10-12 20:15:37,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:15:37,544 INFO L276 IsEmpty]: Start isEmpty. Operand 2341 states and 3328 transitions. [2020-10-12 20:15:37,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-12 20:15:37,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:15:37,552 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 20:15:37,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:15:37,561 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:15:37,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:15:37,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1906888228, now seen corresponding path program 1 times [2020-10-12 20:15:37,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:15:37,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984611610] [2020-10-12 20:15:37,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:15:37,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:15:37,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:37,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:37,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:37,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:37,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:38,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:38,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:38,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:38,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:38,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:40,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:42,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:42,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:15:42,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-12 20:15:42,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 20:15:42,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 20:15:42,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:15:42,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:15:42,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:15:42,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 20:15:42,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:15:42,964 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:15:42,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:15:42,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:15:42,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:42,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:15:42,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:15:42,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:15:42,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 20:15:42,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:15:42,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:15:42,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:15:42,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:15:42,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:15:43,054 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 20:15:43,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [984611610] [2020-10-12 20:15:43,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:15:43,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:15:43,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797066841] [2020-10-12 20:15:43,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:15:43,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:15:43,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:15:43,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:15:43,058 INFO L87 Difference]: Start difference. First operand 2341 states and 3328 transitions. Second operand 5 states. [2020-10-12 20:15:45,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:15:45,964 INFO L93 Difference]: Finished difference Result 6570 states and 9360 transitions. [2020-10-12 20:15:45,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:15:45,965 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-12 20:15:45,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:15:45,986 INFO L225 Difference]: With dead ends: 6570 [2020-10-12 20:15:45,986 INFO L226 Difference]: Without dead ends: 4524 [2020-10-12 20:15:45,991 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 20:15:45,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4524 states. [2020-10-12 20:15:46,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4524 to 4522. [2020-10-12 20:15:46,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4522 states. [2020-10-12 20:15:46,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4522 states to 4522 states and 6344 transitions. [2020-10-12 20:15:46,245 INFO L78 Accepts]: Start accepts. Automaton has 4522 states and 6344 transitions. Word has length 156 [2020-10-12 20:15:46,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:15:46,245 INFO L479 AbstractCegarLoop]: Abstraction has 4522 states and 6344 transitions. [2020-10-12 20:15:46,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:15:46,246 INFO L276 IsEmpty]: Start isEmpty. Operand 4522 states and 6344 transitions. [2020-10-12 20:15:46,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-12 20:15:46,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:15:46,254 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 20:15:46,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:15:46,255 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:15:46,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:15:46,255 INFO L82 PathProgramCache]: Analyzing trace with hash 851663578, now seen corresponding path program 1 times [2020-10-12 20:15:46,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:15:46,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072364629] [2020-10-12 20:15:46,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:15:46,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:15:46,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:46,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:46,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:46,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:46,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:47,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:47,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:47,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:48,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:48,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:48,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:48,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:48,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:48,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:49,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:49,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:51,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:15:51,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-12 20:15:51,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 20:15:51,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 20:15:51,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:15:51,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:15:51,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-12 20:15:51,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-12 20:15:51,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:15:51,524 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:15:51,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:15:51,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:15:51,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:51,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:15:51,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:15:51,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:15:51,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 20:15:51,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:15:51,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:15:51,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:15:51,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:15:51,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:15:51,585 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 20:15:51,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072364629] [2020-10-12 20:15:51,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:15:51,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 20:15:51,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71896695] [2020-10-12 20:15:51,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:15:51,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:15:51,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:15:51,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:15:51,587 INFO L87 Difference]: Start difference. First operand 4522 states and 6344 transitions. Second operand 6 states. [2020-10-12 20:15:51,814 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-12 20:15:53,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:15:53,793 INFO L93 Difference]: Finished difference Result 8640 states and 12955 transitions. [2020-10-12 20:15:53,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:15:53,796 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2020-10-12 20:15:53,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:15:53,824 INFO L225 Difference]: With dead ends: 8640 [2020-10-12 20:15:53,825 INFO L226 Difference]: Without dead ends: 7326 [2020-10-12 20:15:53,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:15:53,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7326 states. [2020-10-12 20:15:54,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7326 to 7322. [2020-10-12 20:15:54,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7322 states. [2020-10-12 20:15:54,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7322 states to 7322 states and 10760 transitions. [2020-10-12 20:15:54,241 INFO L78 Accepts]: Start accepts. Automaton has 7322 states and 10760 transitions. Word has length 157 [2020-10-12 20:15:54,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:15:54,243 INFO L479 AbstractCegarLoop]: Abstraction has 7322 states and 10760 transitions. [2020-10-12 20:15:54,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:15:54,243 INFO L276 IsEmpty]: Start isEmpty. Operand 7322 states and 10760 transitions. [2020-10-12 20:15:54,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-12 20:15:54,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:15:54,251 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 20:15:54,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:15:54,252 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:15:54,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:15:54,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1049516765, now seen corresponding path program 1 times [2020-10-12 20:15:54,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:15:54,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279642298] [2020-10-12 20:15:54,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:15:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:15:54,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:54,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:54,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:54,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:54,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:54,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:54,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:54,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:55,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:55,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:55,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:56,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:15:56,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-12 20:15:56,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:15:56,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2494 [2020-10-12 20:15:56,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:15:56,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:15:56,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:15:56,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-12 20:15:56,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:15:57,000 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:15:57,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:15:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:15:57,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:15:57,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:15:57,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:15:57,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:15:57,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 20:15:57,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:15:57,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:15:57,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:15:57,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:15:57,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:15:57,107 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 20:15:57,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1279642298] [2020-10-12 20:15:57,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:15:57,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:15:57,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495282765] [2020-10-12 20:15:57,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:15:57,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:15:57,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:15:57,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:15:57,110 INFO L87 Difference]: Start difference. First operand 7322 states and 10760 transitions. Second operand 5 states. [2020-10-12 20:15:59,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:15:59,607 INFO L93 Difference]: Finished difference Result 21318 states and 31214 transitions. [2020-10-12 20:15:59,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:15:59,608 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-12 20:15:59,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:15:59,654 INFO L225 Difference]: With dead ends: 21318 [2020-10-12 20:15:59,654 INFO L226 Difference]: Without dead ends: 14054 [2020-10-12 20:15:59,674 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 20:15:59,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14054 states. [2020-10-12 20:16:00,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14054 to 14052. [2020-10-12 20:16:00,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14052 states. [2020-10-12 20:16:00,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14052 states to 14052 states and 20356 transitions. [2020-10-12 20:16:00,488 INFO L78 Accepts]: Start accepts. Automaton has 14052 states and 20356 transitions. Word has length 157 [2020-10-12 20:16:00,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:16:00,488 INFO L479 AbstractCegarLoop]: Abstraction has 14052 states and 20356 transitions. [2020-10-12 20:16:00,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:16:00,489 INFO L276 IsEmpty]: Start isEmpty. Operand 14052 states and 20356 transitions. [2020-10-12 20:16:00,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-12 20:16:00,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:16:00,504 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, 1] [2020-10-12 20:16:00,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:16:00,505 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:16:00,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:16:00,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1179351680, now seen corresponding path program 1 times [2020-10-12 20:16:00,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:16:00,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851123272] [2020-10-12 20:16:00,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:16:00,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:00,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:00,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:00,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:00,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:00,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:01,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:01,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:01,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-12 20:16:01,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:16:01,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 777 [2020-10-12 20:16:01,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:01,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:16:01,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:16:01,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-12 20:16:01,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:16:01,575 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:16:01,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:16:01,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:01,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:01,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:01,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:16:01,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:16:01,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 20:16:01,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:01,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:16:01,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:16:01,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:16:01,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:16:01,631 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 20:16:01,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851123272] [2020-10-12 20:16:01,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:16:01,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:16:01,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707277618] [2020-10-12 20:16:01,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:16:01,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:16:01,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:16:01,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:16:01,633 INFO L87 Difference]: Start difference. First operand 14052 states and 20356 transitions. Second operand 5 states. [2020-10-12 20:16:05,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:16:05,324 INFO L93 Difference]: Finished difference Result 39963 states and 57944 transitions. [2020-10-12 20:16:05,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:16:05,325 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-12 20:16:05,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:16:05,381 INFO L225 Difference]: With dead ends: 39963 [2020-10-12 20:16:05,381 INFO L226 Difference]: Without dead ends: 27017 [2020-10-12 20:16:05,410 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 20:16:05,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27017 states. [2020-10-12 20:16:07,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27017 to 27015. [2020-10-12 20:16:07,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27015 states. [2020-10-12 20:16:07,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27015 states to 27015 states and 38565 transitions. [2020-10-12 20:16:07,806 INFO L78 Accepts]: Start accepts. Automaton has 27015 states and 38565 transitions. Word has length 158 [2020-10-12 20:16:07,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:16:07,807 INFO L479 AbstractCegarLoop]: Abstraction has 27015 states and 38565 transitions. [2020-10-12 20:16:07,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:16:07,807 INFO L276 IsEmpty]: Start isEmpty. Operand 27015 states and 38565 transitions. [2020-10-12 20:16:07,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-12 20:16:07,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:16:07,829 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, 1, 1] [2020-10-12 20:16:07,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:16:07,829 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:16:07,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:16:07,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1617404637, now seen corresponding path program 1 times [2020-10-12 20:16:07,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:16:07,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720380718] [2020-10-12 20:16:07,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:16:07,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:07,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:07,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:07,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-12 20:16:07,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:16:07,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-12 20:16:07,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:07,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:16:07,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-12 20:16:07,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 20:16:07,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:16:08,221 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:16:08,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:16:08,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:08,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:08,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:08,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:16:08,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:16:08,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:16:08,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:08,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:16:08,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:16:08,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:16:08,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:16:08,255 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 20:16:08,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720380718] [2020-10-12 20:16:08,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:16:08,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:16:08,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821685450] [2020-10-12 20:16:08,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:16:08,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:16:08,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:16:08,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:16:08,258 INFO L87 Difference]: Start difference. First operand 27015 states and 38565 transitions. Second operand 4 states. [2020-10-12 20:16:08,454 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-12 20:16:11,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:16:11,391 INFO L93 Difference]: Finished difference Result 57851 states and 85575 transitions. [2020-10-12 20:16:11,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:16:11,392 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2020-10-12 20:16:11,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:16:11,483 INFO L225 Difference]: With dead ends: 57851 [2020-10-12 20:16:11,483 INFO L226 Difference]: Without dead ends: 41849 [2020-10-12 20:16:11,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:16:11,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41849 states. [2020-10-12 20:16:13,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41849 to 41719. [2020-10-12 20:16:13,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41719 states. [2020-10-12 20:16:13,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41719 states to 41719 states and 60293 transitions. [2020-10-12 20:16:13,795 INFO L78 Accepts]: Start accepts. Automaton has 41719 states and 60293 transitions. Word has length 159 [2020-10-12 20:16:13,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:16:13,796 INFO L479 AbstractCegarLoop]: Abstraction has 41719 states and 60293 transitions. [2020-10-12 20:16:13,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:16:13,796 INFO L276 IsEmpty]: Start isEmpty. Operand 41719 states and 60293 transitions. [2020-10-12 20:16:13,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-12 20:16:13,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:16:13,815 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, 1, 1] [2020-10-12 20:16:13,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:16:13,815 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:16:13,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:16:13,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1681228083, now seen corresponding path program 1 times [2020-10-12 20:16:13,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:16:13,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1337542473] [2020-10-12 20:16:13,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:16:13,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:13,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:13,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:13,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-12 20:16:13,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:16:13,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-12 20:16:13,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:13,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:16:13,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-12 20:16:13,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-12 20:16:13,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:16:14,201 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-12 20:16:14,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:16:14,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:14,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:14,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:14,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:16:14,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:16:14,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 20:16:14,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:14,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:16:14,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:16:14,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:16:14,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:16:14,268 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 20:16:14,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1337542473] [2020-10-12 20:16:14,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:16:14,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:16:14,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488478639] [2020-10-12 20:16:14,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:16:14,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:16:14,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:16:14,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:16:14,272 INFO L87 Difference]: Start difference. First operand 41719 states and 60293 transitions. Second operand 4 states. [2020-10-12 20:16:14,464 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-12 20:16:19,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:16:19,077 INFO L93 Difference]: Finished difference Result 93691 states and 139467 transitions. [2020-10-12 20:16:19,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:16:19,078 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2020-10-12 20:16:19,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:16:19,228 INFO L225 Difference]: With dead ends: 93691 [2020-10-12 20:16:19,228 INFO L226 Difference]: Without dead ends: 67977 [2020-10-12 20:16:19,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:16:19,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67977 states. [2020-10-12 20:16:24,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67977 to 67751. [2020-10-12 20:16:24,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67751 states. [2020-10-12 20:16:24,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67751 states to 67751 states and 98553 transitions. [2020-10-12 20:16:24,626 INFO L78 Accepts]: Start accepts. Automaton has 67751 states and 98553 transitions. Word has length 159 [2020-10-12 20:16:24,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:16:24,626 INFO L479 AbstractCegarLoop]: Abstraction has 67751 states and 98553 transitions. [2020-10-12 20:16:24,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:16:24,626 INFO L276 IsEmpty]: Start isEmpty. Operand 67751 states and 98553 transitions. [2020-10-12 20:16:24,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-12 20:16:24,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:16:24,653 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, 1, 1] [2020-10-12 20:16:24,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:16:24,653 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:16:24,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:16:24,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1879081270, now seen corresponding path program 1 times [2020-10-12 20:16:24,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:16:24,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784049661] [2020-10-12 20:16:24,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:16:24,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 20:16:24,694 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 20:16:24,695 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 20:16:24,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 20:16:24,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 08:16:24 BoogieIcfgContainer [2020-10-12 20:16:24,748 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 20:16:24,749 INFO L168 Benchmark]: Toolchain (without parser) took 74837.05 ms. Allocated memory was 141.6 MB in the beginning and 2.4 GB in the end (delta: 2.2 GB). Free memory was 103.2 MB in the beginning and 878.7 MB in the end (delta: -775.5 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2020-10-12 20:16:24,750 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-12 20:16:24,751 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1036.86 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 103.0 MB in the beginning and 167.0 MB in the end (delta: -64.0 MB). Peak memory consumption was 32.2 MB. Max. memory is 7.1 GB. [2020-10-12 20:16:24,751 INFO L168 Benchmark]: Boogie Preprocessor took 117.75 ms. Allocated memory is still 205.0 MB. Free memory was 167.0 MB in the beginning and 162.9 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-10-12 20:16:24,752 INFO L168 Benchmark]: RCFGBuilder took 1477.58 ms. Allocated memory was 205.0 MB in the beginning and 234.9 MB in the end (delta: 29.9 MB). Free memory was 162.9 MB in the beginning and 137.4 MB in the end (delta: 25.5 MB). Peak memory consumption was 75.0 MB. Max. memory is 7.1 GB. [2020-10-12 20:16:24,753 INFO L168 Benchmark]: TraceAbstraction took 72200.63 ms. Allocated memory was 234.9 MB in the beginning and 2.4 GB in the end (delta: 2.1 GB). Free memory was 136.0 MB in the beginning and 878.7 MB in the end (delta: -742.7 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2020-10-12 20:16:24,756 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 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1036.86 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 103.0 MB in the beginning and 167.0 MB in the end (delta: -64.0 MB). Peak memory consumption was 32.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.75 ms. Allocated memory is still 205.0 MB. Free memory was 167.0 MB in the beginning and 162.9 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1477.58 ms. Allocated memory was 205.0 MB in the beginning and 234.9 MB in the end (delta: 29.9 MB). Free memory was 162.9 MB in the beginning and 137.4 MB in the end (delta: 25.5 MB). Peak memory consumption was 75.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 72200.63 ms. Allocated memory was 234.9 MB in the beginning and 2.4 GB in the end (delta: 2.1 GB). Free memory was 136.0 MB in the beginning and 878.7 MB in the end (delta: -742.7 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 910]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L15] msg_t nomsg = (msg_t )-1; [L16] port_t p12 = 0; [L17] char p12_old = '\x0'; [L18] char p12_new = '\x0'; [L19] _Bool ep12 = 0; [L20] port_t p13 = 0; [L21] char p13_old = '\x0'; [L22] char p13_new = '\x0'; [L23] _Bool ep13 = 0; [L24] port_t p21 = 0; [L25] char p21_old = '\x0'; [L26] char p21_new = '\x0'; [L27] _Bool ep21 = 0; [L28] port_t p23 = 0; [L29] char p23_old = '\x0'; [L30] char p23_new = '\x0'; [L31] _Bool ep23 = 0; [L32] port_t p31 = 0; [L33] char p31_old = '\x0'; [L34] char p31_new = '\x0'; [L35] _Bool ep31 = 0; [L36] port_t p32 = 0; [L37] char p32_old = '\x0'; [L38] char p32_new = '\x0'; [L39] _Bool ep32 = 0; [L40] char id1 = '\x0'; [L41] unsigned char r1 = '\x0'; [L42] char st1 = '\x0'; [L43] char nl1 = '\x0'; [L44] char m1 = '\x0'; [L45] char max1 = '\x0'; [L46] _Bool mode1 = 0; [L47] _Bool newmax1 = 0; [L48] char id2 = '\x0'; [L49] unsigned char r2 = '\x0'; [L50] char st2 = '\x0'; [L51] char nl2 = '\x0'; [L52] char m2 = '\x0'; [L53] char max2 = '\x0'; [L54] _Bool mode2 = 0; [L55] _Bool newmax2 = 0; [L56] char id3 = '\x0'; [L57] unsigned char r3 = '\x0'; [L58] char st3 = '\x0'; [L59] char nl3 = '\x0'; [L60] char m3 = '\x0'; [L61] char max3 = '\x0'; [L62] _Bool mode3 = 0; [L63] _Bool newmax3 = 0; [L67] void (*nodes[3])() = { &node1, &node2, &node3 }; [L71] int __return_1873; [L72] int __return_2019; [L73] int __return_2152; [L74] int __return_2288; [L75] int __return_2426; [L76] int __return_2551; [L79] int main__c1; [L80] int main__i2; [L81] main__c1 = 0 [L82] ep12 = __VERIFIER_nondet_bool() [L83] ep13 = __VERIFIER_nondet_bool() [L84] ep21 = __VERIFIER_nondet_bool() [L85] ep23 = __VERIFIER_nondet_bool() [L86] ep31 = __VERIFIER_nondet_bool() [L87] ep32 = __VERIFIER_nondet_bool() [L88] id1 = __VERIFIER_nondet_char() [L89] r1 = __VERIFIER_nondet_uchar() [L90] st1 = __VERIFIER_nondet_char() [L91] nl1 = __VERIFIER_nondet_char() [L92] m1 = __VERIFIER_nondet_char() [L93] max1 = __VERIFIER_nondet_char() [L94] mode1 = __VERIFIER_nondet_bool() [L95] newmax1 = __VERIFIER_nondet_bool() [L96] id2 = __VERIFIER_nondet_char() [L97] r2 = __VERIFIER_nondet_uchar() [L98] st2 = __VERIFIER_nondet_char() [L99] nl2 = __VERIFIER_nondet_char() [L100] m2 = __VERIFIER_nondet_char() [L101] max2 = __VERIFIER_nondet_char() [L102] mode2 = __VERIFIER_nondet_bool() [L103] newmax2 = __VERIFIER_nondet_bool() [L104] id3 = __VERIFIER_nondet_char() [L105] r3 = __VERIFIER_nondet_uchar() [L106] st3 = __VERIFIER_nondet_char() [L107] nl3 = __VERIFIER_nondet_char() [L108] m3 = __VERIFIER_nondet_char() [L109] max3 = __VERIFIER_nondet_char() [L110] mode3 = __VERIFIER_nondet_bool() [L111] newmax3 = __VERIFIER_nondet_bool() [L113] _Bool init__r121; [L114] _Bool init__r131; [L115] _Bool init__r211; [L116] _Bool init__r231; [L117] _Bool init__r311; [L118] _Bool init__r321; [L119] _Bool init__r122; [L120] int init__tmp; [L121] _Bool init__r132; [L122] int init__tmp___0; [L123] _Bool init__r212; [L124] int init__tmp___1; [L125] _Bool init__r232; [L126] int init__tmp___2; [L127] _Bool init__r312; [L128] int init__tmp___3; [L129] _Bool init__r322; [L130] int init__tmp___4; [L131] int init__tmp___5; [L132] init__r121 = ep12 [L133] init__r131 = ep13 [L134] init__r211 = ep21 [L135] init__r231 = ep23 [L136] init__r311 = ep31 [L137] init__r321 = ep32 [L138] COND FALSE !(!(init__r121 == 0)) [L2454] COND FALSE !(!(init__r131 == 0)) [L2470] init__tmp = 0 [L142] init__r122 = (_Bool)init__tmp [L143] COND FALSE !(!(init__r131 == 0)) [L2431] COND FALSE !(!(init__r121 == 0)) [L2447] init__tmp___0 = 0 [L147] init__r132 = (_Bool)init__tmp___0 [L148] COND FALSE !(!(init__r211 == 0)) [L2408] COND FALSE !(!(init__r231 == 0)) [L2424] init__tmp___1 = 0 [L152] init__r212 = (_Bool)init__tmp___1 [L153] COND FALSE !(!(init__r231 == 0)) [L2385] COND FALSE !(!(init__r211 == 0)) [L2401] init__tmp___2 = 0 [L157] init__r232 = (_Bool)init__tmp___2 [L158] COND FALSE !(!(init__r311 == 0)) [L2362] COND FALSE !(!(init__r321 == 0)) [L2378] init__tmp___3 = 0 [L162] init__r312 = (_Bool)init__tmp___3 [L163] COND FALSE !(!(init__r321 == 0)) [L2339] COND FALSE !(!(init__r311 == 0)) [L2355] init__tmp___4 = 0 [L167] init__r322 = (_Bool)init__tmp___4 [L168] COND TRUE ((int)id1) != ((int)id2) [L170] COND TRUE ((int)id1) != ((int)id3) [L172] COND TRUE ((int)id2) != ((int)id3) [L174] COND TRUE ((int)id1) >= 0 [L176] COND TRUE ((int)id2) >= 0 [L178] COND TRUE ((int)id3) >= 0 [L180] COND TRUE ((int)r1) == 0 [L182] COND TRUE ((int)r2) == 0 [L184] COND TRUE ((int)r3) == 0 [L186] COND TRUE ((int)max1) == ((int)id1) [L188] COND TRUE ((int)max2) == ((int)id2) [L190] COND TRUE ((int)max3) == ((int)id3) [L192] COND TRUE ((int)st1) == 0 [L194] COND TRUE ((int)st2) == 0 [L196] COND TRUE ((int)st3) == 0 [L198] COND TRUE ((int)nl1) == 0 [L200] COND TRUE ((int)nl2) == 0 [L202] COND TRUE ((int)nl3) == 0 [L204] COND TRUE ((int)mode1) == 0 [L206] COND TRUE ((int)mode2) == 0 [L208] COND TRUE ((int)mode3) == 0 [L210] COND TRUE !(newmax1 == 0) [L212] COND TRUE !(newmax2 == 0) [L214] COND TRUE !(newmax3 == 0) [L216] init__tmp___5 = 1 [L217] __return_1873 = init__tmp___5 [L218] main__i2 = __return_1873 [L219] COND TRUE main__i2 != 0 [L221] p12_old = nomsg [L222] p12_new = nomsg [L223] p13_old = nomsg [L224] p13_new = nomsg [L225] p21_old = nomsg [L226] p21_new = nomsg [L227] p23_old = nomsg [L228] p23_new = nomsg [L229] p31_old = nomsg [L230] p31_new = nomsg [L231] p32_old = nomsg [L232] p32_new = nomsg [L233] main__i2 = 0 [L235] _Bool node1__newmax; [L236] node1__newmax = 0 [L237] COND FALSE !(!(mode1 == 0)) [L243] COND TRUE ((int)r1) < 2 [L245] COND FALSE !(!(ep12 == 0)) [L258] COND FALSE !(!(ep13 == 0)) [L271] mode1 = 1 [L273] _Bool node2__newmax; [L274] node2__newmax = 0 [L275] COND FALSE !(!(mode2 == 0)) [L281] COND TRUE ((int)r2) < 2 [L283] COND FALSE !(!(ep21 == 0)) [L296] COND FALSE !(!(ep23 == 0)) [L309] mode2 = 1 [L311] _Bool node3__newmax; [L312] node3__newmax = 0 [L313] COND FALSE !(!(mode3 == 0)) [L319] COND TRUE ((int)r3) < 2 [L321] COND FALSE !(!(ep31 == 0)) [L334] COND FALSE !(!(ep32 == 0)) [L347] mode3 = 1 [L348] p12_old = p12_new [L349] p12_new = nomsg [L350] p13_old = p13_new [L351] p13_new = nomsg [L352] p21_old = p21_new [L353] p21_new = nomsg [L354] p23_old = p23_new [L355] p23_new = nomsg [L356] p31_old = p31_new [L357] p31_new = nomsg [L358] p32_old = p32_new [L359] p32_new = nomsg [L361] int check__tmp; [L362] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L364] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L366] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L368] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L370] COND FALSE !(((int)r1) >= 2) [L376] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L378] COND TRUE ((int)r1) < 2 [L380] COND FALSE !(((int)r1) >= 2) [L386] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L388] COND TRUE ((int)r1) < 2 [L390] check__tmp = 1 [L391] __return_2019 = check__tmp [L392] main__c1 = __return_2019 [L394] _Bool __tmp_1; [L395] __tmp_1 = main__c1 [L396] _Bool assert__arg; [L397] assert__arg = __tmp_1 [L398] COND FALSE !(assert__arg == 0) [L405] _Bool node1__newmax; [L406] node1__newmax = 0 [L407] COND TRUE !(mode1 == 0) [L409] COND FALSE !(r1 == 255) [L415] r1 = r1 + 1 [L416] COND FALSE !(!(ep21 == 0)) [L425] COND FALSE !(!(ep31 == 0)) [L434] newmax1 = node1__newmax [L435] COND FALSE !(((int)r1) == 2) [L441] mode1 = 0 [L443] _Bool node2__newmax; [L444] node2__newmax = 0 [L445] COND TRUE !(mode2 == 0) [L447] COND FALSE !(r2 == 255) [L453] r2 = r2 + 1 [L454] COND FALSE !(!(ep12 == 0)) [L463] COND FALSE !(!(ep32 == 0)) [L472] newmax2 = node2__newmax [L473] COND FALSE !(((int)r2) == 2) [L479] mode2 = 0 [L481] _Bool node3__newmax; [L482] node3__newmax = 0 [L483] COND TRUE !(mode3 == 0) [L485] COND FALSE !(r3 == 255) [L491] r3 = r3 + 1 [L492] COND FALSE !(!(ep13 == 0)) [L501] COND FALSE !(!(ep23 == 0)) [L510] newmax3 = node3__newmax [L511] COND FALSE !(((int)r3) == 2) [L517] mode3 = 0 [L518] p12_old = p12_new [L519] p12_new = nomsg [L520] p13_old = p13_new [L521] p13_new = nomsg [L522] p21_old = p21_new [L523] p21_new = nomsg [L524] p23_old = p23_new [L525] p23_new = nomsg [L526] p31_old = p31_new [L527] p31_new = nomsg [L528] p32_old = p32_new [L529] p32_new = nomsg [L531] int check__tmp; [L532] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L534] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L536] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L538] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L540] COND FALSE !(((int)r1) >= 2) [L546] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L548] COND TRUE ((int)r1) < 2 [L550] COND FALSE !(((int)r1) >= 2) [L556] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L558] COND TRUE ((int)r1) < 2 [L560] check__tmp = 1 [L561] __return_2152 = check__tmp [L562] main__c1 = __return_2152 [L564] _Bool __tmp_2; [L565] __tmp_2 = main__c1 [L566] _Bool assert__arg; [L567] assert__arg = __tmp_2 [L568] COND FALSE !(assert__arg == 0) [L575] _Bool node1__newmax; [L576] node1__newmax = 0 [L577] COND FALSE !(!(mode1 == 0)) [L583] COND TRUE ((int)r1) < 2 [L585] COND FALSE !(!(ep12 == 0)) [L598] COND FALSE !(!(ep13 == 0)) [L611] mode1 = 1 [L613] _Bool node2__newmax; [L614] node2__newmax = 0 [L615] COND FALSE !(!(mode2 == 0)) [L621] COND TRUE ((int)r2) < 2 [L623] COND FALSE !(!(ep21 == 0)) [L636] COND FALSE !(!(ep23 == 0)) [L649] mode2 = 1 [L651] _Bool node3__newmax; [L652] node3__newmax = 0 [L653] COND FALSE !(!(mode3 == 0)) [L659] COND TRUE ((int)r3) < 2 [L661] COND FALSE !(!(ep31 == 0)) [L674] COND FALSE !(!(ep32 == 0)) [L687] mode3 = 1 [L688] p12_old = p12_new [L689] p12_new = nomsg [L690] p13_old = p13_new [L691] p13_new = nomsg [L692] p21_old = p21_new [L693] p21_new = nomsg [L694] p23_old = p23_new [L695] p23_new = nomsg [L696] p31_old = p31_new [L697] p31_new = nomsg [L698] p32_old = p32_new [L699] p32_new = nomsg [L701] int check__tmp; [L702] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L704] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L706] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L708] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L710] COND FALSE !(((int)r1) >= 2) [L716] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L718] COND TRUE ((int)r1) < 2 [L720] COND FALSE !(((int)r1) >= 2) [L726] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L728] COND TRUE ((int)r1) < 2 [L730] check__tmp = 1 [L731] __return_2288 = check__tmp [L732] main__c1 = __return_2288 [L734] _Bool __tmp_3; [L735] __tmp_3 = main__c1 [L736] _Bool assert__arg; [L737] assert__arg = __tmp_3 [L738] COND FALSE !(assert__arg == 0) [L745] _Bool node1__newmax; [L746] node1__newmax = 0 [L747] COND TRUE !(mode1 == 0) [L749] COND FALSE !(r1 == 255) [L755] r1 = r1 + 1 [L756] COND FALSE !(!(ep21 == 0)) [L765] COND FALSE !(!(ep31 == 0)) [L774] newmax1 = node1__newmax [L775] COND TRUE ((int)r1) == 2 [L777] COND TRUE ((int)max1) == ((int)id1) [L779] st1 = 1 [L781] mode1 = 0 [L783] _Bool node2__newmax; [L784] node2__newmax = 0 [L785] COND TRUE !(mode2 == 0) [L787] COND FALSE !(r2 == 255) [L793] r2 = r2 + 1 [L794] COND FALSE !(!(ep12 == 0)) [L803] COND FALSE !(!(ep32 == 0)) [L812] newmax2 = node2__newmax [L813] COND TRUE ((int)r2) == 2 [L815] COND TRUE ((int)max2) == ((int)id2) [L817] st2 = 1 [L819] mode2 = 0 [L821] _Bool node3__newmax; [L822] node3__newmax = 0 [L823] COND TRUE !(mode3 == 0) [L825] COND FALSE !(r3 == 255) [L831] r3 = r3 + 1 [L832] COND FALSE !(!(ep13 == 0)) [L841] COND FALSE !(!(ep23 == 0)) [L850] newmax3 = node3__newmax [L851] COND TRUE ((int)r3) == 2 [L853] COND TRUE ((int)max3) == ((int)id3) [L855] st3 = 1 [L857] mode3 = 0 [L858] p12_old = p12_new [L859] p12_new = nomsg [L860] p13_old = p13_new [L861] p13_new = nomsg [L862] p21_old = p21_new [L863] p21_new = nomsg [L864] p23_old = p23_new [L865] p23_new = nomsg [L866] p31_old = p31_new [L867] p31_new = nomsg [L868] p32_old = p32_new [L869] p32_new = nomsg [L871] int check__tmp; [L872] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L1568] check__tmp = 0 [L900] __return_2426 = check__tmp [L901] main__c1 = __return_2426 [L904] _Bool __tmp_4; [L905] __tmp_4 = main__c1 [L906] _Bool assert__arg; [L907] assert__arg = __tmp_4 [L908] COND TRUE assert__arg == 0 [L910] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 347 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 72.0s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 27.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6542 SDtfs, 8147 SDslu, 4302 SDs, 0 SdLazy, 7203 SolverSat, 127 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67751occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 11.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 372 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 31.4s InterpolantComputationTime, 1567 NumberOfCodeBlocks, 1567 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1399 ConstructedInterpolants, 0 QuantifiedInterpolants, 1044937 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...