/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=NARROWEST --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_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:53:07,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:53:07,451 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:53:07,485 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:53:07,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:53:07,494 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:53:07,496 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:53:07,499 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:53:07,501 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:53:07,504 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:53:07,505 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:53:07,506 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:53:07,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:53:07,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:53:07,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:53:07,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:53:07,514 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:53:07,516 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:53:07,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:53:07,525 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:53:07,527 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:53:07,528 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:53:07,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:53:07,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:53:07,542 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:53:07,545 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:53:07,545 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:53:07,546 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:53:07,547 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:53:07,547 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:53:07,547 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:53:07,551 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:53:07,552 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:53:07,553 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:53:07,557 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:53:07,557 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:53:07,558 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:53:07,558 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:53:07,560 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:53:07,561 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:53:07,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:53:07,562 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 [2020-10-13 14:53:07,584 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:53:07,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:53:07,586 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:53:07,586 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:53:07,586 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:53:07,586 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:53:07,586 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:53:07,587 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:53:07,587 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:53:07,587 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:53:07,587 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:53:07,587 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:53:07,587 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:53:07,588 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:53:07,588 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:53:07,588 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:53:07,588 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:53:07,588 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:53:07,589 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:53:07,589 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:53:07,589 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:53:07,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:53:07,589 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:53:07,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:53:07,590 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:53:07,590 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:53:07,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:53:07,590 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:53:07,591 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:53:07,591 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 14:53:07,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:53:07,918 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:53:07,922 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:53:07,923 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:53:07,924 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:53:07,924 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-13 14:53:07,988 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e08e4c712/8f3671d4f19f480689c17e7891d3be8f/FLAG200a45e6c [2020-10-13 14:53:08,520 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:53:08,521 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-13 14:53:08,535 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e08e4c712/8f3671d4f19f480689c17e7891d3be8f/FLAG200a45e6c [2020-10-13 14:53:08,823 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e08e4c712/8f3671d4f19f480689c17e7891d3be8f [2020-10-13 14:53:08,832 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:53:08,834 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:53:08,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:53:08,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:53:08,840 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:53:08,841 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:53:08" (1/1) ... [2020-10-13 14:53:08,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@248aaf70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:53:08, skipping insertion in model container [2020-10-13 14:53:08,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:53:08" (1/1) ... [2020-10-13 14:53:08,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:53:08,924 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:53:09,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:53:09,307 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:53:09,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:53:09,574 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:53:09,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:53:09 WrapperNode [2020-10-13 14:53:09,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:53:09,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:53:09,576 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:53:09,576 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:53:09,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:53:09" (1/1) ... [2020-10-13 14:53:09,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:53:09" (1/1) ... [2020-10-13 14:53:09,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:53:09" (1/1) ... [2020-10-13 14:53:09,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:53:09" (1/1) ... [2020-10-13 14:53:09,641 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:53:09" (1/1) ... [2020-10-13 14:53:09,666 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:53:09" (1/1) ... [2020-10-13 14:53:09,684 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:53:09" (1/1) ... [2020-10-13 14:53:09,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:53:09,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:53:09,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:53:09,694 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:53:09,696 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:53:09" (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 [2020-10-13 14:53:09,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:53:09,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:53:09,778 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:53:09,779 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:53:09,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:53:09,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:53:09,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:53:09,779 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:53:09,779 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:53:09,780 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:53:09,780 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:53:09,780 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:53:09,780 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:53:09,780 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:53:09,780 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:53:09,781 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 14:53:09,781 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-13 14:53:09,781 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-13 14:53:09,781 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:53:09,781 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:53:09,781 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:53:09,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:53:09,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:53:11,008 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:53:11,008 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:53:11,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:53:11 BoogieIcfgContainer [2020-10-13 14:53:11,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:53:11,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:53:11,017 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:53:11,020 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:53:11,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:53:08" (1/3) ... [2020-10-13 14:53:11,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@177a83f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:53:11, skipping insertion in model container [2020-10-13 14:53:11,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:53:09" (2/3) ... [2020-10-13 14:53:11,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@177a83f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:53:11, skipping insertion in model container [2020-10-13 14:53:11,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:53:11" (3/3) ... [2020-10-13 14:53:11,024 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-13 14:53:11,036 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:53:11,045 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 14:53:11,061 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 14:53:11,089 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:53:11,090 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:53:11,090 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:53:11,090 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:53:11,090 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:53:11,091 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:53:11,091 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:53:11,091 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:53:11,115 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states. [2020-10-13 14:53:11,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 14:53:11,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:53:11,129 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] [2020-10-13 14:53:11,130 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:53:11,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:53:11,137 INFO L82 PathProgramCache]: Analyzing trace with hash -191598454, now seen corresponding path program 1 times [2020-10-13 14:53:11,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:53:11,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442612905] [2020-10-13 14:53:11,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:53:11,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:53:11,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:11,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:12,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:16,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:53:16,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 14:53:16,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 14:53:16,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-13 14:53:16,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:53:16,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:53:16,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 14:53:16,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 14:53:16,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 14:53:17,024 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 14:53:17,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:53:17,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:53:17,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:17,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:53:17,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:53:17,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:53:17,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 14:53:17,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:53:17,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:53:17,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:53:17,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:53:17,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:53:17,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:53:17,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442612905] [2020-10-13 14:53:17,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:53:17,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:53:17,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398883098] [2020-10-13 14:53:17,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:53:17,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:53:17,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:53:17,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:53:17,117 INFO L87 Difference]: Start difference. First operand 264 states. Second operand 4 states. [2020-10-13 14:53:17,400 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-13 14:53:18,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:53:18,959 INFO L93 Difference]: Finished difference Result 529 states and 871 transitions. [2020-10-13 14:53:18,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:53:18,962 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2020-10-13 14:53:18,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:53:18,979 INFO L225 Difference]: With dead ends: 529 [2020-10-13 14:53:18,979 INFO L226 Difference]: Without dead ends: 400 [2020-10-13 14:53:18,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:53:19,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2020-10-13 14:53:19,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 398. [2020-10-13 14:53:19,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2020-10-13 14:53:19,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 594 transitions. [2020-10-13 14:53:19,061 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 594 transitions. Word has length 101 [2020-10-13 14:53:19,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:53:19,062 INFO L479 AbstractCegarLoop]: Abstraction has 398 states and 594 transitions. [2020-10-13 14:53:19,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:53:19,063 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 594 transitions. [2020-10-13 14:53:19,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 14:53:19,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:53:19,067 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] [2020-10-13 14:53:19,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:53:19,068 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:53:19,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:53:19,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1985426171, now seen corresponding path program 1 times [2020-10-13 14:53:19,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:53:19,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447610115] [2020-10-13 14:53:19,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:53:19,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:53:19,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:19,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:20,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:53:20,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 14:53:20,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 14:53:20,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1518 [2020-10-13 14:53:20,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:53:20,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:53:20,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-13 14:53:20,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 14:53:20,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:53:20,957 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 14:53:20,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:53:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:53:20,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:20,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:53:20,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:53:20,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:53:20,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 14:53:20,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:53:20,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:53:20,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:53:20,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:53:20,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-13 14:53:21,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:53:21,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447610115] [2020-10-13 14:53:21,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:53:21,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:53:21,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703910775] [2020-10-13 14:53:21,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:53:21,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:53:21,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:53:21,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:53:21,030 INFO L87 Difference]: Start difference. First operand 398 states and 594 transitions. Second operand 5 states. [2020-10-13 14:53:22,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:53:22,363 INFO L93 Difference]: Finished difference Result 612 states and 932 transitions. [2020-10-13 14:53:22,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 14:53:22,363 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-13 14:53:22,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:53:22,368 INFO L225 Difference]: With dead ends: 612 [2020-10-13 14:53:22,368 INFO L226 Difference]: Without dead ends: 610 [2020-10-13 14:53:22,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:53:22,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2020-10-13 14:53:22,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 400. [2020-10-13 14:53:22,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-10-13 14:53:22,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 596 transitions. [2020-10-13 14:53:22,397 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 596 transitions. Word has length 102 [2020-10-13 14:53:22,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:53:22,398 INFO L479 AbstractCegarLoop]: Abstraction has 400 states and 596 transitions. [2020-10-13 14:53:22,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:53:22,398 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 596 transitions. [2020-10-13 14:53:22,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 14:53:22,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:53:22,402 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] [2020-10-13 14:53:22,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:53:22,403 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:53:22,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:53:22,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1076343338, now seen corresponding path program 1 times [2020-10-13 14:53:22,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:53:22,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1161566470] [2020-10-13 14:53:22,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:53:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:53:22,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:22,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:23,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:53:23,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 14:53:23,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 14:53:23,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1433 [2020-10-13 14:53:23,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:53:23,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 14:53:23,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 14:53:23,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 14:53:23,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:53:24,257 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 14:53:24,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:53:24,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:53:24,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:24,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:53:24,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:53:24,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:53:24,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 14:53:24,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:53:24,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:53:24,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:53:24,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:53:24,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:53:24,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:53:24,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1161566470] [2020-10-13 14:53:24,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:53:24,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 14:53:24,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464932918] [2020-10-13 14:53:24,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 14:53:24,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:53:24,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 14:53:24,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:53:24,378 INFO L87 Difference]: Start difference. First operand 400 states and 596 transitions. Second operand 9 states. [2020-10-13 14:53:28,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:53:28,500 INFO L93 Difference]: Finished difference Result 1977 states and 3054 transitions. [2020-10-13 14:53:28,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 14:53:28,504 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-10-13 14:53:28,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:53:28,513 INFO L225 Difference]: With dead ends: 1977 [2020-10-13 14:53:28,513 INFO L226 Difference]: Without dead ends: 1681 [2020-10-13 14:53:28,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:53:28,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1681 states. [2020-10-13 14:53:28,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1681 to 1671. [2020-10-13 14:53:28,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1671 states. [2020-10-13 14:53:28,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 2574 transitions. [2020-10-13 14:53:28,621 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 2574 transitions. Word has length 103 [2020-10-13 14:53:28,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:53:28,622 INFO L479 AbstractCegarLoop]: Abstraction has 1671 states and 2574 transitions. [2020-10-13 14:53:28,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 14:53:28,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 2574 transitions. [2020-10-13 14:53:28,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 14:53:28,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:53:28,627 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] [2020-10-13 14:53:28,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:53:28,630 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:53:28,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:53:28,630 INFO L82 PathProgramCache]: Analyzing trace with hash 2127141952, now seen corresponding path program 1 times [2020-10-13 14:53:28,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:53:28,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861905898] [2020-10-13 14:53:28,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:53:28,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:53:28,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:28,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:29,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:53:29,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 14:53:29,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 14:53:29,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 765 [2020-10-13 14:53:29,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:53:29,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:53:29,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:53:29,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 14:53:29,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 14:53:29,715 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 14:53:29,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:53:29,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:53:29,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:29,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:53:29,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:53:29,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:53:29,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 14:53:29,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:53:29,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:53:29,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:53:29,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:53:29,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:53:29,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:53:29,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1861905898] [2020-10-13 14:53:29,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:53:29,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:53:29,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101191272] [2020-10-13 14:53:29,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:53:29,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:53:29,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:53:29,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:53:29,793 INFO L87 Difference]: Start difference. First operand 1671 states and 2574 transitions. Second operand 6 states. [2020-10-13 14:53:30,047 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 14:53:31,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:53:31,497 INFO L93 Difference]: Finished difference Result 4619 states and 7184 transitions. [2020-10-13 14:53:31,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:53:31,498 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2020-10-13 14:53:31,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:53:31,515 INFO L225 Difference]: With dead ends: 4619 [2020-10-13 14:53:31,516 INFO L226 Difference]: Without dead ends: 3004 [2020-10-13 14:53:31,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:53:31,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3004 states. [2020-10-13 14:53:31,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3004 to 3002. [2020-10-13 14:53:31,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3002 states. [2020-10-13 14:53:31,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3002 states to 3002 states and 4645 transitions. [2020-10-13 14:53:31,753 INFO L78 Accepts]: Start accepts. Automaton has 3002 states and 4645 transitions. Word has length 104 [2020-10-13 14:53:31,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:53:31,754 INFO L479 AbstractCegarLoop]: Abstraction has 3002 states and 4645 transitions. [2020-10-13 14:53:31,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:53:31,754 INFO L276 IsEmpty]: Start isEmpty. Operand 3002 states and 4645 transitions. [2020-10-13 14:53:31,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 14:53:31,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:53:31,762 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] [2020-10-13 14:53:31,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:53:31,763 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:53:31,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:53:31,763 INFO L82 PathProgramCache]: Analyzing trace with hash 758981905, now seen corresponding path program 1 times [2020-10-13 14:53:31,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:53:31,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043923013] [2020-10-13 14:53:31,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:53:31,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:53:31,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:31,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:32,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:53:32,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 14:53:32,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 14:53:32,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 622 [2020-10-13 14:53:32,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:53:32,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:53:32,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:53:32,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 14:53:32,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:53:32,759 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 14:53:32,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:53:32,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:53:32,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:32,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:53:32,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:53:32,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:53:32,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 14:53:32,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:53:32,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:53:32,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:53:32,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:53:32,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:53:32,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:53:32,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043923013] [2020-10-13 14:53:32,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:53:32,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:53:32,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207614454] [2020-10-13 14:53:32,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:53:32,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:53:32,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:53:32,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:53:32,844 INFO L87 Difference]: Start difference. First operand 3002 states and 4645 transitions. Second operand 6 states. [2020-10-13 14:53:33,080 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 14:53:34,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:53:34,732 INFO L93 Difference]: Finished difference Result 8486 states and 13190 transitions. [2020-10-13 14:53:34,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:53:34,733 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2020-10-13 14:53:34,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:53:34,770 INFO L225 Difference]: With dead ends: 8486 [2020-10-13 14:53:34,770 INFO L226 Difference]: Without dead ends: 5556 [2020-10-13 14:53:34,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:53:34,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5556 states. [2020-10-13 14:53:35,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5556 to 5554. [2020-10-13 14:53:35,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5554 states. [2020-10-13 14:53:35,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5554 states to 5554 states and 8582 transitions. [2020-10-13 14:53:35,225 INFO L78 Accepts]: Start accepts. Automaton has 5554 states and 8582 transitions. Word has length 104 [2020-10-13 14:53:35,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:53:35,225 INFO L479 AbstractCegarLoop]: Abstraction has 5554 states and 8582 transitions. [2020-10-13 14:53:35,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:53:35,225 INFO L276 IsEmpty]: Start isEmpty. Operand 5554 states and 8582 transitions. [2020-10-13 14:53:35,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 14:53:35,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:53:35,232 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] [2020-10-13 14:53:35,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:53:35,233 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:53:35,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:53:35,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1208752819, now seen corresponding path program 1 times [2020-10-13 14:53:35,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:53:35,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82685649] [2020-10-13 14:53:35,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:53:35,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:53:35,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:35,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:35,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:53:35,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 14:53:35,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 14:53:35,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 568 [2020-10-13 14:53:35,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:53:35,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:53:35,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:53:35,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 14:53:35,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 14:53:36,179 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 14:53:36,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:53:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:53:36,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:36,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:53:36,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:53:36,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:53:36,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 14:53:36,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:53:36,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:53:36,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:53:36,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:53:36,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:53:36,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:53:36,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82685649] [2020-10-13 14:53:36,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:53:36,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:53:36,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717961901] [2020-10-13 14:53:36,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:53:36,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:53:36,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:53:36,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:53:36,281 INFO L87 Difference]: Start difference. First operand 5554 states and 8582 transitions. Second operand 6 states. [2020-10-13 14:53:36,620 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 14:53:38,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:53:38,654 INFO L93 Difference]: Finished difference Result 15654 states and 24218 transitions. [2020-10-13 14:53:38,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:53:38,654 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2020-10-13 14:53:38,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:53:38,705 INFO L225 Difference]: With dead ends: 15654 [2020-10-13 14:53:38,706 INFO L226 Difference]: Without dead ends: 10225 [2020-10-13 14:53:38,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:53:38,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10225 states. [2020-10-13 14:53:39,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10225 to 10223. [2020-10-13 14:53:39,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10223 states. [2020-10-13 14:53:39,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10223 states to 10223 states and 15720 transitions. [2020-10-13 14:53:39,517 INFO L78 Accepts]: Start accepts. Automaton has 10223 states and 15720 transitions. Word has length 104 [2020-10-13 14:53:39,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:53:39,517 INFO L479 AbstractCegarLoop]: Abstraction has 10223 states and 15720 transitions. [2020-10-13 14:53:39,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:53:39,517 INFO L276 IsEmpty]: Start isEmpty. Operand 10223 states and 15720 transitions. [2020-10-13 14:53:39,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 14:53:39,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:53:39,525 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] [2020-10-13 14:53:39,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:53:39,526 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:53:39,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:53:39,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1988560772, now seen corresponding path program 1 times [2020-10-13 14:53:39,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:53:39,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709855433] [2020-10-13 14:53:39,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:53:39,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:53:39,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:39,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:40,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:53:40,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 14:53:40,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 14:53:40,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 485 [2020-10-13 14:53:40,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:53:40,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:53:40,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:53:40,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 14:53:40,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:53:40,325 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 14:53:40,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:53:40,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:53:40,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:40,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:53:40,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:53:40,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:53:40,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 14:53:40,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:53:40,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:53:40,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:53:40,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:53:40,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:53:40,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:53:40,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709855433] [2020-10-13 14:53:40,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:53:40,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:53:40,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106568647] [2020-10-13 14:53:40,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:53:40,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:53:40,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:53:40,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:53:40,412 INFO L87 Difference]: Start difference. First operand 10223 states and 15720 transitions. Second operand 6 states. [2020-10-13 14:53:40,686 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 14:53:42,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:53:42,721 INFO L93 Difference]: Finished difference Result 29152 states and 44825 transitions. [2020-10-13 14:53:42,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:53:42,721 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2020-10-13 14:53:42,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:53:42,779 INFO L225 Difference]: With dead ends: 29152 [2020-10-13 14:53:42,780 INFO L226 Difference]: Without dead ends: 19091 [2020-10-13 14:53:42,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:53:42,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19091 states. [2020-10-13 14:53:44,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19091 to 19089. [2020-10-13 14:53:44,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19089 states. [2020-10-13 14:53:44,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19089 states to 19089 states and 29188 transitions. [2020-10-13 14:53:44,054 INFO L78 Accepts]: Start accepts. Automaton has 19089 states and 29188 transitions. Word has length 104 [2020-10-13 14:53:44,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:53:44,054 INFO L479 AbstractCegarLoop]: Abstraction has 19089 states and 29188 transitions. [2020-10-13 14:53:44,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:53:44,055 INFO L276 IsEmpty]: Start isEmpty. Operand 19089 states and 29188 transitions. [2020-10-13 14:53:44,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 14:53:44,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:53:44,066 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] [2020-10-13 14:53:44,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:53:44,067 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:53:44,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:53:44,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1783021483, now seen corresponding path program 1 times [2020-10-13 14:53:44,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:53:44,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577730589] [2020-10-13 14:53:44,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:53:44,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:53:44,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:44,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:45,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:53:45,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 14:53:45,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 14:53:45,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1181 [2020-10-13 14:53:45,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:53:45,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:53:45,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:53:45,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 14:53:45,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:53:45,569 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 14:53:45,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:53:45,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:53:45,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:45,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:53:45,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:53:45,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:53:45,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 14:53:45,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:53:45,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:53:45,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:53:45,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:53:45,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:53:45,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:53:45,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577730589] [2020-10-13 14:53:45,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:53:45,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:53:45,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523158375] [2020-10-13 14:53:45,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:53:45,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:53:45,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:53:45,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:53:45,641 INFO L87 Difference]: Start difference. First operand 19089 states and 29188 transitions. Second operand 6 states. [2020-10-13 14:53:45,873 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 14:53:48,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:53:48,503 INFO L93 Difference]: Finished difference Result 55449 states and 84844 transitions. [2020-10-13 14:53:48,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:53:48,504 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2020-10-13 14:53:48,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:53:48,584 INFO L225 Difference]: With dead ends: 55449 [2020-10-13 14:53:48,584 INFO L226 Difference]: Without dead ends: 36563 [2020-10-13 14:53:48,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:53:48,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36563 states. [2020-10-13 14:53:50,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36563 to 36561. [2020-10-13 14:53:50,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36561 states. [2020-10-13 14:53:50,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36561 states to 36561 states and 55710 transitions. [2020-10-13 14:53:50,683 INFO L78 Accepts]: Start accepts. Automaton has 36561 states and 55710 transitions. Word has length 104 [2020-10-13 14:53:50,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:53:50,683 INFO L479 AbstractCegarLoop]: Abstraction has 36561 states and 55710 transitions. [2020-10-13 14:53:50,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:53:50,683 INFO L276 IsEmpty]: Start isEmpty. Operand 36561 states and 55710 transitions. [2020-10-13 14:53:50,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 14:53:50,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:53:50,696 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] [2020-10-13 14:53:50,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:53:50,697 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:53:50,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:53:50,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1142471138, now seen corresponding path program 1 times [2020-10-13 14:53:50,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:53:50,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642063949] [2020-10-13 14:53:50,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:53:50,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:53:50,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:50,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:51,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:53:51,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 14:53:51,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 14:53:51,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 532 [2020-10-13 14:53:51,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:53:51,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:53:51,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:53:51,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 14:53:51,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:53:51,515 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 14:53:51,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:53:51,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:53:51,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:51,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:53:51,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:53:51,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:53:51,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 14:53:51,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:53:51,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:53:51,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:53:51,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:53:51,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:53:51,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:53:51,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642063949] [2020-10-13 14:53:51,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:53:51,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:53:51,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181605295] [2020-10-13 14:53:51,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:53:51,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:53:51,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:53:51,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:53:51,573 INFO L87 Difference]: Start difference. First operand 36561 states and 55710 transitions. Second operand 6 states. [2020-10-13 14:53:52,040 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 14:53:57,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:53:57,461 INFO L93 Difference]: Finished difference Result 108367 states and 164922 transitions. [2020-10-13 14:53:57,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:53:57,462 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2020-10-13 14:53:57,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:53:57,623 INFO L225 Difference]: With dead ends: 108367 [2020-10-13 14:53:57,623 INFO L226 Difference]: Without dead ends: 71901 [2020-10-13 14:53:57,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:53:57,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71901 states. [2020-10-13 14:54:01,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71901 to 71899. [2020-10-13 14:54:01,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71899 states. [2020-10-13 14:54:01,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71899 states to 71899 states and 108742 transitions. [2020-10-13 14:54:01,319 INFO L78 Accepts]: Start accepts. Automaton has 71899 states and 108742 transitions. Word has length 104 [2020-10-13 14:54:01,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:54:01,319 INFO L479 AbstractCegarLoop]: Abstraction has 71899 states and 108742 transitions. [2020-10-13 14:54:01,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:54:01,319 INFO L276 IsEmpty]: Start isEmpty. Operand 71899 states and 108742 transitions. [2020-10-13 14:54:01,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 14:54:01,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:54:01,339 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] [2020-10-13 14:54:01,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:54:01,340 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:54:01,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:54:01,340 INFO L82 PathProgramCache]: Analyzing trace with hash -197743551, now seen corresponding path program 1 times [2020-10-13 14:54:01,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:54:01,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796140600] [2020-10-13 14:54:01,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:54:01,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:54:01,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:01,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:01,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:05,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:54:05,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 14:54:05,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 14:54:05,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3636 [2020-10-13 14:54:05,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:54:05,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 14:54:05,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:54:05,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 14:54:05,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:54:05,343 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 24 [2020-10-13 14:54:05,588 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 14:54:05,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:54:05,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:54:05,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:05,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:54:05,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:54:05,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:54:05,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:54:05,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:54:05,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:54:05,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:54:05,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:54:05,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:54:05,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:54:05,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796140600] [2020-10-13 14:54:05,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:54:05,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 14:54:05,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527864905] [2020-10-13 14:54:05,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 14:54:05,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:54:05,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 14:54:05,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:54:05,653 INFO L87 Difference]: Start difference. First operand 71899 states and 108742 transitions. Second operand 9 states. [2020-10-13 14:54:05,904 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 14:54:30,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:54:30,179 INFO L93 Difference]: Finished difference Result 422440 states and 637237 transitions. [2020-10-13 14:54:30,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 14:54:30,179 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 105 [2020-10-13 14:54:30,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:54:30,749 INFO L225 Difference]: With dead ends: 422440 [2020-10-13 14:54:30,749 INFO L226 Difference]: Without dead ends: 351884 [2020-10-13 14:54:30,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2020-10-13 14:54:31,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351884 states. [2020-10-13 14:54:41,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351884 to 71971. [2020-10-13 14:54:41,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71971 states. [2020-10-13 14:54:41,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71971 states to 71971 states and 108809 transitions. [2020-10-13 14:54:41,947 INFO L78 Accepts]: Start accepts. Automaton has 71971 states and 108809 transitions. Word has length 105 [2020-10-13 14:54:41,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:54:41,947 INFO L479 AbstractCegarLoop]: Abstraction has 71971 states and 108809 transitions. [2020-10-13 14:54:41,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 14:54:41,947 INFO L276 IsEmpty]: Start isEmpty. Operand 71971 states and 108809 transitions. [2020-10-13 14:54:41,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 14:54:41,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:54:41,961 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] [2020-10-13 14:54:41,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 14:54:41,961 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:54:41,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:54:41,961 INFO L82 PathProgramCache]: Analyzing trace with hash 492639201, now seen corresponding path program 1 times [2020-10-13 14:54:41,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:54:41,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10028486] [2020-10-13 14:54:41,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:54:41,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:54:42,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:42,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:42,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:44,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:54:44,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 14:54:44,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 14:54:44,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2538 [2020-10-13 14:54:44,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:54:44,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 14:54:44,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:54:44,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 14:54:44,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:54:44,949 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 14:54:44,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:54:44,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:54:44,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:54:44,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:54:44,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:54:44,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:54:44,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:54:44,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:54:44,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:54:44,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:54:44,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:54:44,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:54:45,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:54:45,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10028486] [2020-10-13 14:54:45,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:54:45,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 14:54:45,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404942998] [2020-10-13 14:54:45,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 14:54:45,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:54:45,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 14:54:45,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:54:45,006 INFO L87 Difference]: Start difference. First operand 71971 states and 108809 transitions. Second operand 9 states. [2020-10-13 14:54:45,286 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 14:55:22,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:55:22,852 INFO L93 Difference]: Finished difference Result 417019 states and 629226 transitions. [2020-10-13 14:55:22,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 14:55:22,852 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 105 [2020-10-13 14:55:22,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:55:23,446 INFO L225 Difference]: With dead ends: 417019 [2020-10-13 14:55:23,447 INFO L226 Difference]: Without dead ends: 356495 [2020-10-13 14:55:23,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2020-10-13 14:55:23,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356495 states. [2020-10-13 14:55:33,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356495 to 72382. [2020-10-13 14:55:33,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72382 states. [2020-10-13 14:55:33,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72382 states to 72382 states and 109331 transitions. [2020-10-13 14:55:33,780 INFO L78 Accepts]: Start accepts. Automaton has 72382 states and 109331 transitions. Word has length 105 [2020-10-13 14:55:33,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:55:33,781 INFO L479 AbstractCegarLoop]: Abstraction has 72382 states and 109331 transitions. [2020-10-13 14:55:33,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 14:55:33,781 INFO L276 IsEmpty]: Start isEmpty. Operand 72382 states and 109331 transitions. [2020-10-13 14:55:33,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 14:55:33,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:55:33,795 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] [2020-10-13 14:55:33,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 14:55:33,795 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:55:33,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:55:33,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1253137631, now seen corresponding path program 1 times [2020-10-13 14:55:33,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:55:33,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726654821] [2020-10-13 14:55:33,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:55:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:55:34,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:34,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:34,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:35,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:55:35,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 14:55:35,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 14:55:35,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1459 [2020-10-13 14:55:35,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:55:35,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 14:55:35,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:55:35,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-13 14:55:35,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:55:36,076 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 14:55:36,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:55:36,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:55:36,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:55:36,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:55:36,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:55:36,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:55:36,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:55:36,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:55:36,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:55:36,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:55:36,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:55:36,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:55:36,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:55:36,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726654821] [2020-10-13 14:55:36,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:55:36,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 14:55:36,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849553883] [2020-10-13 14:55:36,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 14:55:36,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:55:36,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 14:55:36,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:55:36,125 INFO L87 Difference]: Start difference. First operand 72382 states and 109331 transitions. Second operand 9 states. [2020-10-13 14:55:36,386 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 14:56:20,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:56:20,357 INFO L93 Difference]: Finished difference Result 380353 states and 573968 transitions. [2020-10-13 14:56:20,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 14:56:20,358 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 105 [2020-10-13 14:56:20,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:56:20,887 INFO L225 Difference]: With dead ends: 380353 [2020-10-13 14:56:20,887 INFO L226 Difference]: Without dead ends: 342242 [2020-10-13 14:56:20,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2020-10-13 14:56:21,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342242 states. [2020-10-13 14:56:35,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342242 to 73265. [2020-10-13 14:56:35,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73265 states. [2020-10-13 14:56:35,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73265 states to 73265 states and 110522 transitions. [2020-10-13 14:56:35,442 INFO L78 Accepts]: Start accepts. Automaton has 73265 states and 110522 transitions. Word has length 105 [2020-10-13 14:56:35,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:56:35,442 INFO L479 AbstractCegarLoop]: Abstraction has 73265 states and 110522 transitions. [2020-10-13 14:56:35,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 14:56:35,442 INFO L276 IsEmpty]: Start isEmpty. Operand 73265 states and 110522 transitions. [2020-10-13 14:56:35,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 14:56:35,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:56:35,458 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] [2020-10-13 14:56:35,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 14:56:35,459 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:56:35,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:56:35,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1228289343, now seen corresponding path program 1 times [2020-10-13 14:56:35,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:56:35,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563302438] [2020-10-13 14:56:35,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:56:35,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:56:35,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:35,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:35,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:37,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:56:37,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 14:56:37,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 14:56:37,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1787 [2020-10-13 14:56:37,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:56:37,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 14:56:37,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:56:37,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-13 14:56:37,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:56:37,472 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 25 [2020-10-13 14:56:37,716 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 14:56:37,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:56:37,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:56:37,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:56:37,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:56:37,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:56:37,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:56:37,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:56:37,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:56:37,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:56:37,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:56:37,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:56:37,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:56:37,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:56:37,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563302438] [2020-10-13 14:56:37,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:56:37,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 14:56:37,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264635324] [2020-10-13 14:56:37,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 14:56:37,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:56:37,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 14:56:37,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:56:37,753 INFO L87 Difference]: Start difference. First operand 73265 states and 110522 transitions. Second operand 9 states. [2020-10-13 14:56:38,041 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187