/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.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:24:35,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:24:35,475 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:24:35,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:24:35,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:24:35,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:24:35,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:24:35,503 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:24:35,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:24:35,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:24:35,506 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:24:35,507 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:24:35,508 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:24:35,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:24:35,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:24:35,510 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:24:35,511 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:24:35,512 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:24:35,516 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:24:35,519 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:24:35,522 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:24:35,523 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:24:35,526 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:24:35,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:24:35,530 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:24:35,530 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:24:35,531 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:24:35,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:24:35,534 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:24:35,535 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:24:35,535 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:24:35,538 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:24:35,539 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:24:35,540 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:24:35,542 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:24:35,542 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:24:35,542 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:24:35,543 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:24:35,543 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:24:35,544 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:24:35,545 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:24:35,546 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 20:24:35,598 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:24:35,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:24:35,601 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:24:35,601 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:24:35,601 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:24:35,602 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:24:35,602 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:24:35,602 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:24:35,602 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:24:35,602 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:24:35,603 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:24:35,603 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:24:35,603 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:24:35,603 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:24:35,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:24:35,604 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:24:35,604 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:24:35,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:24:35,604 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:24:35,604 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:24:35,604 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:24:35,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:24:35,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:24:35,606 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:24:35,606 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:24:35,607 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:24:35,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:24:35,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:24:35,607 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:24:35,608 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 20:24:35,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:24:35,940 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:24:35,946 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:24:35,949 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:24:35,949 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:24:35,950 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-12 20:24:36,023 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7594d95b9/e98bf8b609534bb28edf248c7e4f67e3/FLAG0743eefc6 [2020-10-12 20:24:36,576 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:24:36,576 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-12 20:24:36,592 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7594d95b9/e98bf8b609534bb28edf248c7e4f67e3/FLAG0743eefc6 [2020-10-12 20:24:36,902 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7594d95b9/e98bf8b609534bb28edf248c7e4f67e3 [2020-10-12 20:24:36,910 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:24:36,912 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:24:36,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:24:36,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:24:36,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:24:36,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:24:36" (1/1) ... [2020-10-12 20:24:36,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@697b2ada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:24:36, skipping insertion in model container [2020-10-12 20:24:36,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:24:36" (1/1) ... [2020-10-12 20:24:36,930 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:24:36,986 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:24:37,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:24:37,537 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:24:37,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:24:37,711 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:24:37,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:24:37 WrapperNode [2020-10-12 20:24:37,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:24:37,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:24:37,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:24:37,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:24:37,728 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:24:37" (1/1) ... [2020-10-12 20:24:37,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:24:37" (1/1) ... [2020-10-12 20:24:37,746 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:24:37" (1/1) ... [2020-10-12 20:24:37,746 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:24:37" (1/1) ... [2020-10-12 20:24:37,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:24:37" (1/1) ... [2020-10-12 20:24:37,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:24:37" (1/1) ... [2020-10-12 20:24:37,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:24:37" (1/1) ... [2020-10-12 20:24:37,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:24:37,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:24:37,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:24:37,829 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:24:37,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:24:37" (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 20:24:37,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:24:37,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:24:37,909 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 20:24:37,910 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:24:37,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:24:37,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:24:37,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 20:24:37,913 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 20:24:37,913 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 20:24:37,913 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 20:24:37,913 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 20:24:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 20:24:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 20:24:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 20:24:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 20:24:37,917 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 20:24:37,917 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 20:24:37,918 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 20:24:37,918 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:24:37,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:24:37,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:24:39,448 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:24:39,449 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 20:24:39,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:24:39 BoogieIcfgContainer [2020-10-12 20:24:39,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:24:39,457 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:24:39,457 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:24:39,460 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:24:39,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:24:36" (1/3) ... [2020-10-12 20:24:39,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59b0b0a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:24:39, skipping insertion in model container [2020-10-12 20:24:39,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:24:37" (2/3) ... [2020-10-12 20:24:39,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59b0b0a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:24:39, skipping insertion in model container [2020-10-12 20:24:39,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:24:39" (3/3) ... [2020-10-12 20:24:39,464 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-12 20:24:39,475 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:24:39,484 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:24:39,499 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:24:39,527 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:24:39,527 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:24:39,527 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:24:39,528 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:24:39,528 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:24:39,528 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:24:39,528 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:24:39,528 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:24:39,553 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states. [2020-10-12 20:24:39,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 20:24:39,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:24:39,571 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] [2020-10-12 20:24:39,572 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:24:39,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:24:39,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1511443852, now seen corresponding path program 1 times [2020-10-12 20:24:39,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:24:39,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286577284] [2020-10-12 20:24:39,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:24:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:24:40,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:40,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:41,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:41,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:41,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:45,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:24:45,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 20:24:45,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:24:45,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-12 20:24:45,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:24:45,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 20:24:45,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 20:24:45,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:24:45,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 20:24:46,019 WARN L193 SmtUtils]: Spent 568.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-12 20:24:46,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:24:46,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:24:46,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:46,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:24:46,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:24:46,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:24:46,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 20:24:46,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:24:46,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:24:46,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:24:46,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:24:46,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:24:46,112 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 20:24:46,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286577284] [2020-10-12 20:24:46,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:24:46,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 20:24:46,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186962874] [2020-10-12 20:24:46,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 20:24:46,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:24:46,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 20:24:46,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:24:46,143 INFO L87 Difference]: Start difference. First operand 347 states. Second operand 7 states. [2020-10-12 20:24:46,685 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 270 [2020-10-12 20:24:49,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:24:49,313 INFO L93 Difference]: Finished difference Result 1547 states and 2632 transitions. [2020-10-12 20:24:49,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:24:49,316 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-10-12 20:24:49,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:24:49,362 INFO L225 Difference]: With dead ends: 1547 [2020-10-12 20:24:49,362 INFO L226 Difference]: Without dead ends: 1365 [2020-10-12 20:24:49,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:24:49,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2020-10-12 20:24:49,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 487. [2020-10-12 20:24:49,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 487 states. [2020-10-12 20:24:49,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 808 transitions. [2020-10-12 20:24:49,535 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 808 transitions. Word has length 122 [2020-10-12 20:24:49,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:24:49,537 INFO L479 AbstractCegarLoop]: Abstraction has 487 states and 808 transitions. [2020-10-12 20:24:49,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 20:24:49,537 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 808 transitions. [2020-10-12 20:24:49,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-12 20:24:49,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:24:49,548 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] [2020-10-12 20:24:49,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:24:49,549 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:24:49,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:24:49,549 INFO L82 PathProgramCache]: Analyzing trace with hash -456049120, now seen corresponding path program 1 times [2020-10-12 20:24:49,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:24:49,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [554159653] [2020-10-12 20:24:49,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:24:49,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:24:49,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:49,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:50,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:50,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:50,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:50,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:54,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:24:54,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-12 20:24:54,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:24:54,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-12 20:24:54,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:24:54,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:24:54,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-12 20:24:54,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:24:54,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 20:24:55,271 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-12 20:24:55,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:24:55,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:24:55,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:55,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:24:55,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:24:55,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:24:55,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 20:24:55,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:24:55,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:24:55,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:24:55,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:24:55,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:24:55,375 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 20:24:55,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [554159653] [2020-10-12 20:24:55,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:24:55,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:24:55,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477215824] [2020-10-12 20:24:55,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:24:55,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:24:55,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:24:55,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:24:55,380 INFO L87 Difference]: Start difference. First operand 487 states and 808 transitions. Second operand 8 states. [2020-10-12 20:24:55,892 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 272 [2020-10-12 20:24:59,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:24:59,085 INFO L93 Difference]: Finished difference Result 3563 states and 5985 transitions. [2020-10-12 20:24:59,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 20:24:59,086 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 123 [2020-10-12 20:24:59,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:24:59,109 INFO L225 Difference]: With dead ends: 3563 [2020-10-12 20:24:59,109 INFO L226 Difference]: Without dead ends: 3273 [2020-10-12 20:24:59,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-12 20:24:59,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3273 states. [2020-10-12 20:24:59,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3273 to 1276. [2020-10-12 20:24:59,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1276 states. [2020-10-12 20:24:59,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 2137 transitions. [2020-10-12 20:24:59,253 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 2137 transitions. Word has length 123 [2020-10-12 20:24:59,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:24:59,255 INFO L479 AbstractCegarLoop]: Abstraction has 1276 states and 2137 transitions. [2020-10-12 20:24:59,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:24:59,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 2137 transitions. [2020-10-12 20:24:59,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-12 20:24:59,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:24:59,264 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] [2020-10-12 20:24:59,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:24:59,265 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:24:59,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:24:59,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1314231085, now seen corresponding path program 1 times [2020-10-12 20:24:59,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:24:59,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638046781] [2020-10-12 20:24:59,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:24:59,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:24:59,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:59,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:59,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:59,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:00,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:00,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:04,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:25:04,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 20:25:04,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:25:04,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 20:25:04,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:25:04,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:25:04,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 20:25:04,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 20:25:04,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:25:04,782 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-12 20:25:04,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:25:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:25:04,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:04,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:25:04,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:25:04,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:25:04,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 20:25:04,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:25:04,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:25:04,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:25:04,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:25:04,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:25:04,878 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 20:25:04,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638046781] [2020-10-12 20:25:04,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:25:04,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:25:04,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553677769] [2020-10-12 20:25:04,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:25:04,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:25:04,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:25:04,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:25:04,885 INFO L87 Difference]: Start difference. First operand 1276 states and 2137 transitions. Second operand 8 states. [2020-10-12 20:25:05,380 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 272 [2020-10-12 20:25:09,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:25:09,991 INFO L93 Difference]: Finished difference Result 10261 states and 17238 transitions. [2020-10-12 20:25:09,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 20:25:09,992 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 124 [2020-10-12 20:25:09,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:25:10,053 INFO L225 Difference]: With dead ends: 10261 [2020-10-12 20:25:10,053 INFO L226 Difference]: Without dead ends: 9288 [2020-10-12 20:25:10,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-12 20:25:10,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9288 states. [2020-10-12 20:25:10,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9288 to 3588. [2020-10-12 20:25:10,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3588 states. [2020-10-12 20:25:10,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3588 states to 3588 states and 6017 transitions. [2020-10-12 20:25:10,483 INFO L78 Accepts]: Start accepts. Automaton has 3588 states and 6017 transitions. Word has length 124 [2020-10-12 20:25:10,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:25:10,485 INFO L479 AbstractCegarLoop]: Abstraction has 3588 states and 6017 transitions. [2020-10-12 20:25:10,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:25:10,486 INFO L276 IsEmpty]: Start isEmpty. Operand 3588 states and 6017 transitions. [2020-10-12 20:25:10,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-12 20:25:10,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:25:10,491 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] [2020-10-12 20:25:10,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:25:10,491 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:25:10,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:25:10,492 INFO L82 PathProgramCache]: Analyzing trace with hash -2143510201, now seen corresponding path program 1 times [2020-10-12 20:25:10,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:25:10,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548720458] [2020-10-12 20:25:10,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:25:10,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:25:10,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:10,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:10,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:11,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:11,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:11,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:15,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:25:15,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-12 20:25:15,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:25:15,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 20:25:15,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:25:15,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:25:15,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 20:25:15,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 20:25:15,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:25:16,159 WARN L193 SmtUtils]: Spent 484.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-12 20:25:16,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:25:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:25:16,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:16,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:25:16,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:25:16,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:25:16,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 20:25:16,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:25:16,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:25:16,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:25:16,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:25:16,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:25:16,255 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 20:25:16,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548720458] [2020-10-12 20:25:16,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:25:16,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:25:16,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617759196] [2020-10-12 20:25:16,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:25:16,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:25:16,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:25:16,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:25:16,260 INFO L87 Difference]: Start difference. First operand 3588 states and 6017 transitions. Second operand 8 states. [2020-10-12 20:25:16,829 WARN L193 SmtUtils]: Spent 483.00 ms on a formula simplification that was a NOOP. DAG size: 272 [2020-10-12 20:25:20,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:25:20,921 INFO L93 Difference]: Finished difference Result 29278 states and 49100 transitions. [2020-10-12 20:25:20,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 20:25:20,921 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 125 [2020-10-12 20:25:20,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:25:21,024 INFO L225 Difference]: With dead ends: 29278 [2020-10-12 20:25:21,025 INFO L226 Difference]: Without dead ends: 26113 [2020-10-12 20:25:21,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-12 20:25:21,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26113 states. [2020-10-12 20:25:21,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26113 to 10006. [2020-10-12 20:25:22,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10006 states. [2020-10-12 20:25:22,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10006 states to 10006 states and 16761 transitions. [2020-10-12 20:25:22,029 INFO L78 Accepts]: Start accepts. Automaton has 10006 states and 16761 transitions. Word has length 125 [2020-10-12 20:25:22,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:25:22,029 INFO L479 AbstractCegarLoop]: Abstraction has 10006 states and 16761 transitions. [2020-10-12 20:25:22,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:25:22,030 INFO L276 IsEmpty]: Start isEmpty. Operand 10006 states and 16761 transitions. [2020-10-12 20:25:22,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-12 20:25:22,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:25:22,033 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] [2020-10-12 20:25:22,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:25:22,034 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:25:22,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:25:22,034 INFO L82 PathProgramCache]: Analyzing trace with hash -2076800998, now seen corresponding path program 1 times [2020-10-12 20:25:22,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:25:22,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895932096] [2020-10-12 20:25:22,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:25:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:25:22,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:22,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:22,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:22,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:22,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:22,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:27,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:25:27,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 20:25:27,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:25:27,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-12 20:25:27,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:25:27,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:25:27,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 20:25:27,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 20:25:27,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:25:27,568 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-12 20:25:27,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:25:27,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:25:27,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:27,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:25:27,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:25:27,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:25:27,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 20:25:27,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:25:27,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:25:27,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:25:27,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:25:27,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:25:27,633 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 20:25:27,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895932096] [2020-10-12 20:25:27,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:25:27,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:25:27,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601064570] [2020-10-12 20:25:27,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:25:27,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:25:27,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:25:27,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:25:27,636 INFO L87 Difference]: Start difference. First operand 10006 states and 16761 transitions. Second operand 8 states. [2020-10-12 20:25:28,089 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 272 [2020-10-12 20:25:34,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:25:34,341 INFO L93 Difference]: Finished difference Result 84894 states and 142091 transitions. [2020-10-12 20:25:34,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 20:25:34,342 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 126 [2020-10-12 20:25:34,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:25:34,536 INFO L225 Difference]: With dead ends: 84894 [2020-10-12 20:25:34,536 INFO L226 Difference]: Without dead ends: 75391 [2020-10-12 20:25:34,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-12 20:25:34,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75391 states. [2020-10-12 20:25:38,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75391 to 27916. [2020-10-12 20:25:38,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27916 states. [2020-10-12 20:25:38,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27916 states to 27916 states and 46681 transitions. [2020-10-12 20:25:38,158 INFO L78 Accepts]: Start accepts. Automaton has 27916 states and 46681 transitions. Word has length 126 [2020-10-12 20:25:38,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:25:38,159 INFO L479 AbstractCegarLoop]: Abstraction has 27916 states and 46681 transitions. [2020-10-12 20:25:38,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:25:38,159 INFO L276 IsEmpty]: Start isEmpty. Operand 27916 states and 46681 transitions. [2020-10-12 20:25:38,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-12 20:25:38,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:25:38,162 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] [2020-10-12 20:25:38,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:25:38,167 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:25:38,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:25:38,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1186186821, now seen corresponding path program 1 times [2020-10-12 20:25:38,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:25:38,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891372241] [2020-10-12 20:25:38,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:25:38,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:25:38,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:38,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:38,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:38,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:38,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:39,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:43,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:25:43,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-12 20:25:43,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:25:43,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-12 20:25:43,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:25:43,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:25:43,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-12 20:25:43,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 20:25:43,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:25:43,734 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-12 20:25:43,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:25:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:25:43,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:43,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:25:43,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:25:43,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:25:43,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 20:25:43,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:25:43,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:25:43,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:25:43,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:25:43,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:25:43,801 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 20:25:43,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891372241] [2020-10-12 20:25:43,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:25:43,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:25:43,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548884202] [2020-10-12 20:25:43,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:25:43,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:25:43,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:25:43,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:25:43,804 INFO L87 Difference]: Start difference. First operand 27916 states and 46681 transitions. Second operand 5 states. [2020-10-12 20:25:44,259 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 274 [2020-10-12 20:25:50,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:25:50,198 INFO L93 Difference]: Finished difference Result 100258 states and 167517 transitions. [2020-10-12 20:25:50,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:25:50,199 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-12 20:25:50,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:25:50,424 INFO L225 Difference]: With dead ends: 100258 [2020-10-12 20:25:50,424 INFO L226 Difference]: Without dead ends: 72713 [2020-10-12 20:25:50,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:25:50,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72713 states. [2020-10-12 20:25:54,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72713 to 54396. [2020-10-12 20:25:54,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54396 states. [2020-10-12 20:25:54,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54396 states to 54396 states and 90814 transitions. [2020-10-12 20:25:54,484 INFO L78 Accepts]: Start accepts. Automaton has 54396 states and 90814 transitions. Word has length 127 [2020-10-12 20:25:54,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:25:54,485 INFO L479 AbstractCegarLoop]: Abstraction has 54396 states and 90814 transitions. [2020-10-12 20:25:54,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:25:54,485 INFO L276 IsEmpty]: Start isEmpty. Operand 54396 states and 90814 transitions. [2020-10-12 20:25:54,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-12 20:25:54,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:25:54,488 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] [2020-10-12 20:25:54,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:25:54,488 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:25:54,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:25:54,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1459635083, now seen corresponding path program 1 times [2020-10-12 20:25:54,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:25:54,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857557506] [2020-10-12 20:25:54,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:25:54,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:25:54,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:54,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:54,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:54,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:55,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:55,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:59,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:59,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:59,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:25:59,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-12 20:25:59,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 20:25:59,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 20:25:59,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:25:59,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 20:25:59,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 20:25:59,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 20:25:59,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:25:59,988 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-12 20:25:59,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:25:59,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:26:00,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:00,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:26:00,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:26:00,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:26:00,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 20:26:00,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:26:00,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:26:00,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:26:00,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:26:00,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:26:00,039 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 20:26:00,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857557506] [2020-10-12 20:26:00,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:26:00,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 20:26:00,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355140860] [2020-10-12 20:26:00,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 20:26:00,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:26:00,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 20:26:00,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:26:00,044 INFO L87 Difference]: Start difference. First operand 54396 states and 90814 transitions. Second operand 7 states. [2020-10-12 20:26:00,485 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-12 20:26:16,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:26:16,848 INFO L93 Difference]: Finished difference Result 265812 states and 443711 transitions. [2020-10-12 20:26:16,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:26:16,849 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2020-10-12 20:26:16,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:26:17,699 INFO L225 Difference]: With dead ends: 265812 [2020-10-12 20:26:17,700 INFO L226 Difference]: Without dead ends: 211930 [2020-10-12 20:26:17,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:26:18,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211930 states. [2020-10-12 20:26:27,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211930 to 103559. [2020-10-12 20:26:27,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103559 states. [2020-10-12 20:26:27,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103559 states to 103559 states and 172580 transitions. [2020-10-12 20:26:27,765 INFO L78 Accepts]: Start accepts. Automaton has 103559 states and 172580 transitions. Word has length 127 [2020-10-12 20:26:27,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:26:27,765 INFO L479 AbstractCegarLoop]: Abstraction has 103559 states and 172580 transitions. [2020-10-12 20:26:27,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 20:26:27,765 INFO L276 IsEmpty]: Start isEmpty. Operand 103559 states and 172580 transitions. [2020-10-12 20:26:27,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-12 20:26:27,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:26:27,768 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] [2020-10-12 20:26:27,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:26:27,768 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:26:27,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:26:27,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1319939168, now seen corresponding path program 1 times [2020-10-12 20:26:27,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:26:27,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287381205] [2020-10-12 20:26:27,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:26:27,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:26:27,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:27,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:27,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:28,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:28,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:28,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:28,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:28,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:29,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:32,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:26:32,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-12 20:26:32,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 20:26:32,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 20:26:32,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:26:32,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 20:26:32,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 20:26:32,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 20:26:32,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:26:33,234 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-12 20:26:33,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:26:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:26:33,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:33,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:26:33,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:26:33,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:26:33,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 20:26:33,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:26:33,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:26:33,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:26:33,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:26:33,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:26:33,280 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 20:26:33,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287381205] [2020-10-12 20:26:33,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:26:33,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 20:26:33,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851746363] [2020-10-12 20:26:33,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 20:26:33,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:26:33,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 20:26:33,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:26:33,282 INFO L87 Difference]: Start difference. First operand 103559 states and 172580 transitions. Second operand 7 states. [2020-10-12 20:26:33,715 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-12 20:26:55,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:26:55,737 INFO L93 Difference]: Finished difference Result 336937 states and 561332 transitions. [2020-10-12 20:26:55,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:26:55,738 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2020-10-12 20:26:55,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:26:56,160 INFO L225 Difference]: With dead ends: 336937 [2020-10-12 20:26:56,161 INFO L226 Difference]: Without dead ends: 277488 [2020-10-12 20:26:56,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:26:56,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277488 states. [2020-10-12 20:27:11,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277488 to 168677. [2020-10-12 20:27:11,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168677 states. [2020-10-12 20:27:11,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168677 states to 168677 states and 280993 transitions. [2020-10-12 20:27:11,456 INFO L78 Accepts]: Start accepts. Automaton has 168677 states and 280993 transitions. Word has length 127 [2020-10-12 20:27:11,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:27:11,457 INFO L479 AbstractCegarLoop]: Abstraction has 168677 states and 280993 transitions. [2020-10-12 20:27:11,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 20:27:11,457 INFO L276 IsEmpty]: Start isEmpty. Operand 168677 states and 280993 transitions. [2020-10-12 20:27:11,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-12 20:27:11,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:27:11,459 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] [2020-10-12 20:27:11,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:27:11,460 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:27:11,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:27:11,460 INFO L82 PathProgramCache]: Analyzing trace with hash 2081790590, now seen corresponding path program 1 times [2020-10-12 20:27:11,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:27:11,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [963017159] [2020-10-12 20:27:11,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:27:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:27:11,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:11,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:11,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:11,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:12,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:12,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:15,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:15,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:16,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:16,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:27:16,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-12 20:27:16,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 20:27:16,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 20:27:16,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:27:16,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 20:27:16,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 20:27:16,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 20:27:16,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:27:16,910 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-12 20:27:16,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:27:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:27:16,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:27:16,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:27:16,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:27:16,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:27:16,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 20:27:16,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:27:16,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:27:16,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:27:16,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:27:16,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:27:16,965 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 20:27:16,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [963017159] [2020-10-12 20:27:16,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:27:16,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 20:27:16,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543554051] [2020-10-12 20:27:16,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 20:27:16,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:27:16,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 20:27:16,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:27:16,967 INFO L87 Difference]: Start difference. First operand 168677 states and 280993 transitions. Second operand 7 states. [2020-10-12 20:27:17,389 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-12 20:27:45,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:27:45,213 INFO L93 Difference]: Finished difference Result 383549 states and 638898 transitions. [2020-10-12 20:27:45,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:27:45,214 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2020-10-12 20:27:45,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:27:45,894 INFO L225 Difference]: With dead ends: 383549 [2020-10-12 20:27:45,895 INFO L226 Difference]: Without dead ends: 324100 [2020-10-12 20:27:45,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:27:46,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324100 states. [2020-10-12 20:28:06,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324100 to 212777. [2020-10-12 20:28:06,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212777 states.