/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.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:32:45,682 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:32:45,685 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:32:45,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:32:45,709 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:32:45,710 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:32:45,712 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:32:45,713 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:32:45,715 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:32:45,716 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:32:45,720 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:32:45,721 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:32:45,722 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:32:45,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:32:45,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:32:45,731 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:32:45,732 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:32:45,733 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:32:45,737 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:32:45,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:32:45,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:32:45,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:32:45,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:32:45,750 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:32:45,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:32:45,755 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:32:45,756 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:32:45,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:32:45,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:32:45,760 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:32:45,760 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:32:45,762 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:32:45,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:32:45,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:32:45,765 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:32:45,765 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:32:45,766 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:32:45,766 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:32:45,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:32:45,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:32:45,768 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:32:45,769 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 14:32:45,824 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:32:45,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:32:45,825 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:32:45,825 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:32:45,826 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:32:45,826 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:32:45,826 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:32:45,826 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:32:45,826 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:32:45,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:32:45,827 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:32:45,831 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:32:45,831 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:32:45,832 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:32:45,832 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:32:45,832 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:32:45,832 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:32:45,832 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:32:45,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:32:45,833 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:32:45,833 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:32:45,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:32:45,833 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:32:45,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:32:45,834 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:32:45,837 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:32:45,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:32:45,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:32:45,838 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:32:45,838 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 14:32:46,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:32:46,171 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:32:46,176 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:32:46,178 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:32:46,178 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:32:46,179 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2020-10-13 14:32:46,262 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f44baa31/53c3f1ee45254883afd094428c660461/FLAG391ff43e1 [2020-10-13 14:32:47,051 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:32:47,052 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2020-10-13 14:32:47,084 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f44baa31/53c3f1ee45254883afd094428c660461/FLAG391ff43e1 [2020-10-13 14:32:47,582 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f44baa31/53c3f1ee45254883afd094428c660461 [2020-10-13 14:32:47,591 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:32:47,593 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:32:47,594 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:32:47,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:32:47,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:32:47,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:32:47" (1/1) ... [2020-10-13 14:32:47,602 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@701ef800 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:32:47, skipping insertion in model container [2020-10-13 14:32:47,602 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:32:47" (1/1) ... [2020-10-13 14:32:47,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:32:47,770 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:32:48,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:32:48,869 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:32:49,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:32:49,319 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:32:49,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:32:49 WrapperNode [2020-10-13 14:32:49,321 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:32:49,322 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:32:49,322 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:32:49,322 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:32:49,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:32:49" (1/1) ... [2020-10-13 14:32:49,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:32:49" (1/1) ... [2020-10-13 14:32:49,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:32:49" (1/1) ... [2020-10-13 14:32:49,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:32:49" (1/1) ... [2020-10-13 14:32:49,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:32:49" (1/1) ... [2020-10-13 14:32:49,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:32:49" (1/1) ... [2020-10-13 14:32:49,543 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:32:49" (1/1) ... [2020-10-13 14:32:49,566 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:32:49,567 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:32:49,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:32:49,567 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:32:49,568 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:32:49" (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 14:32:49,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:32:49,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:32:49,642 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:32:49,642 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:32:49,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:32:49,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:32:49,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:32:49,643 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:32:49,643 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:32:49,643 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:32:49,643 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:32:49,644 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:32:49,644 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:32:49,644 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:32:49,644 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:32:49,644 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:32:49,645 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:32:49,645 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:32:49,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:32:49,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:32:52,983 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:32:52,984 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:32:53,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:32:53 BoogieIcfgContainer [2020-10-13 14:32:53,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:32:53,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:32:53,003 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:32:53,006 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:32:53,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:32:47" (1/3) ... [2020-10-13 14:32:53,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f4dda8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:32:53, skipping insertion in model container [2020-10-13 14:32:53,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:32:49" (2/3) ... [2020-10-13 14:32:53,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f4dda8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:32:53, skipping insertion in model container [2020-10-13 14:32:53,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:32:53" (3/3) ... [2020-10-13 14:32:53,011 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2020-10-13 14:32:53,021 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:32:53,036 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-13 14:32:53,051 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-13 14:32:53,086 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:32:53,086 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:32:53,087 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:32:53,087 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:32:53,087 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:32:53,087 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:32:53,087 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:32:53,087 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:32:53,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states. [2020-10-13 14:32:53,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 14:32:53,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:32:53,156 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] [2020-10-13 14:32:53,157 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:32:53,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:32:53,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1856988322, now seen corresponding path program 1 times [2020-10-13 14:32:53,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:32:53,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129222363] [2020-10-13 14:32:53,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:32:53,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:32:53,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:53,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:55,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:55,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:55,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:56,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:58,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:32:58,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 14:32:58,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:32:58,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-13 14:32:58,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:32:58,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:32:58,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:32:58,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 14:32:58,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 14:33:00,025 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-13 14:33:00,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:33:00,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:00,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:00,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:00,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:33:00,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:33:00,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 14:33:00,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:00,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:33:00,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:33:00,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:33:00,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:33:00,162 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 14:33:00,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129222363] [2020-10-13 14:33:00,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:33:00,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:33:00,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376521445] [2020-10-13 14:33:00,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:33:00,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:33:00,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:33:00,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:33:00,192 INFO L87 Difference]: Start difference. First operand 1295 states. Second operand 6 states. [2020-10-13 14:33:01,609 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification that was a NOOP. DAG size: 505 [2020-10-13 14:33:12,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:33:12,459 INFO L93 Difference]: Finished difference Result 2530 states and 4342 transitions. [2020-10-13 14:33:12,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:33:12,461 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-10-13 14:33:12,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:33:12,488 INFO L225 Difference]: With dead ends: 2530 [2020-10-13 14:33:12,488 INFO L226 Difference]: Without dead ends: 1602 [2020-10-13 14:33:12,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:33:12,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1602 states. [2020-10-13 14:33:12,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1602 to 1596. [2020-10-13 14:33:12,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1596 states. [2020-10-13 14:33:12,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1596 states to 1596 states and 2078 transitions. [2020-10-13 14:33:12,653 INFO L78 Accepts]: Start accepts. Automaton has 1596 states and 2078 transitions. Word has length 56 [2020-10-13 14:33:12,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:33:12,654 INFO L479 AbstractCegarLoop]: Abstraction has 1596 states and 2078 transitions. [2020-10-13 14:33:12,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:33:12,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1596 states and 2078 transitions. [2020-10-13 14:33:12,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 14:33:12,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:33:12,659 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] [2020-10-13 14:33:12,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:33:12,660 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:33:12,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:33:12,661 INFO L82 PathProgramCache]: Analyzing trace with hash -108202759, now seen corresponding path program 1 times [2020-10-13 14:33:12,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:33:12,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180251784] [2020-10-13 14:33:12,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:33:12,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:12,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:12,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:13,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:13,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:15,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:16,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:16,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:17,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:17,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:17,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 14:33:17,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:33:17,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 14:33:17,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:17,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:33:17,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:33:17,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 14:33:17,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:33:18,999 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-13 14:33:19,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:33:19,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:19,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:19,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:19,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:33:19,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:33:19,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 14:33:19,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:19,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:33:19,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:33:19,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:33:19,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:33:19,117 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 14:33:19,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180251784] [2020-10-13 14:33:19,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:33:19,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:33:19,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933731904] [2020-10-13 14:33:19,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:33:19,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:33:19,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:33:19,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:33:19,122 INFO L87 Difference]: Start difference. First operand 1596 states and 2078 transitions. Second operand 6 states. [2020-10-13 14:33:20,304 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 508 [2020-10-13 14:33:27,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:33:27,370 INFO L93 Difference]: Finished difference Result 3115 states and 4108 transitions. [2020-10-13 14:33:27,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:33:27,371 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-10-13 14:33:27,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:33:27,382 INFO L225 Difference]: With dead ends: 3115 [2020-10-13 14:33:27,382 INFO L226 Difference]: Without dead ends: 2030 [2020-10-13 14:33:27,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:33:27,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2030 states. [2020-10-13 14:33:27,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2030 to 2020. [2020-10-13 14:33:27,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2020 states. [2020-10-13 14:33:27,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 2647 transitions. [2020-10-13 14:33:27,472 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 2647 transitions. Word has length 57 [2020-10-13 14:33:27,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:33:27,472 INFO L479 AbstractCegarLoop]: Abstraction has 2020 states and 2647 transitions. [2020-10-13 14:33:27,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:33:27,473 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 2647 transitions. [2020-10-13 14:33:27,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 14:33:27,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:33:27,476 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] [2020-10-13 14:33:27,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:33:27,477 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:33:27,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:33:27,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1579807103, now seen corresponding path program 1 times [2020-10-13 14:33:27,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:33:27,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061258964] [2020-10-13 14:33:27,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:33:27,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:27,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:27,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:28,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:28,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:29,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:29,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:30,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:30,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:32,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:32,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:32,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 14:33:32,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:33:32,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 14:33:32,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:32,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:33:32,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 14:33:32,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 14:33:32,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 14:33:33,711 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-13 14:33:33,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:33:33,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:33,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:33,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:33,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:33:33,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:33:33,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 14:33:33,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:33,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:33:33,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:33:33,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:33:33,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:33:33,773 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 14:33:33,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061258964] [2020-10-13 14:33:33,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:33:33,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 14:33:33,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44060879] [2020-10-13 14:33:33,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:33:33,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:33:33,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:33:33,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:33:33,775 INFO L87 Difference]: Start difference. First operand 2020 states and 2647 transitions. Second operand 6 states. [2020-10-13 14:33:35,030 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 500 [2020-10-13 14:33:42,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:33:42,322 INFO L93 Difference]: Finished difference Result 5389 states and 7414 transitions. [2020-10-13 14:33:42,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 14:33:42,323 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-10-13 14:33:42,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:33:42,344 INFO L225 Difference]: With dead ends: 5389 [2020-10-13 14:33:42,345 INFO L226 Difference]: Without dead ends: 4441 [2020-10-13 14:33:42,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:33:42,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4441 states. [2020-10-13 14:33:42,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4441 to 3334. [2020-10-13 14:33:42,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3334 states. [2020-10-13 14:33:42,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3334 states to 3334 states and 4470 transitions. [2020-10-13 14:33:42,523 INFO L78 Accepts]: Start accepts. Automaton has 3334 states and 4470 transitions. Word has length 57 [2020-10-13 14:33:42,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:33:42,525 INFO L479 AbstractCegarLoop]: Abstraction has 3334 states and 4470 transitions. [2020-10-13 14:33:42,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:33:42,525 INFO L276 IsEmpty]: Start isEmpty. Operand 3334 states and 4470 transitions. [2020-10-13 14:33:42,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-13 14:33:42,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:33:42,537 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] [2020-10-13 14:33:42,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:33:42,538 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:33:42,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:33:42,543 INFO L82 PathProgramCache]: Analyzing trace with hash -477493960, now seen corresponding path program 1 times [2020-10-13 14:33:42,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:33:42,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897806108] [2020-10-13 14:33:42,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:33:42,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:42,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:42,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:43,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:43,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:44,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:44,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:44,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:45,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:45,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:46,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:47,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:47,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 14:33:47,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:33:47,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:33:47,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:47,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:33:47,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 14:33:47,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 14:33:47,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:33:49,004 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-13 14:33:49,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:33:49,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:49,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:49,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:49,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:33:49,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:33:49,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 14:33:49,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:49,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:33:49,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:33:49,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:33:49,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:33:49,091 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 14:33:49,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1897806108] [2020-10-13 14:33:49,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:33:49,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:33:49,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021327312] [2020-10-13 14:33:49,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:33:49,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:33:49,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:33:49,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:33:49,094 INFO L87 Difference]: Start difference. First operand 3334 states and 4470 transitions. Second operand 10 states. [2020-10-13 14:33:51,639 WARN L193 SmtUtils]: Spent 2.32 s on a formula simplification. DAG size of input: 523 DAG size of output: 521 [2020-10-13 14:34:00,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:34:00,203 INFO L93 Difference]: Finished difference Result 10965 states and 15464 transitions. [2020-10-13 14:34:00,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 14:34:00,204 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-10-13 14:34:00,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:34:00,237 INFO L225 Difference]: With dead ends: 10965 [2020-10-13 14:34:00,237 INFO L226 Difference]: Without dead ends: 8180 [2020-10-13 14:34:00,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2020-10-13 14:34:00,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8180 states. [2020-10-13 14:34:00,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8180 to 3924. [2020-10-13 14:34:00,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3924 states. [2020-10-13 14:34:00,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3924 states to 3924 states and 5290 transitions. [2020-10-13 14:34:00,515 INFO L78 Accepts]: Start accepts. Automaton has 3924 states and 5290 transitions. Word has length 59 [2020-10-13 14:34:00,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:34:00,516 INFO L479 AbstractCegarLoop]: Abstraction has 3924 states and 5290 transitions. [2020-10-13 14:34:00,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:34:00,516 INFO L276 IsEmpty]: Start isEmpty. Operand 3924 states and 5290 transitions. [2020-10-13 14:34:00,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-13 14:34:00,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:34:00,521 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] [2020-10-13 14:34:00,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:34:00,522 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:34:00,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:34:00,522 INFO L82 PathProgramCache]: Analyzing trace with hash 519506083, now seen corresponding path program 1 times [2020-10-13 14:34:00,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:34:00,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144249193] [2020-10-13 14:34:00,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:34:00,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:00,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:00,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:01,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:01,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:02,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:03,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:04,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:04,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:05,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:05,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:05,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 14:34:05,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:34:05,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-13 14:34:05,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:05,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 14:34:05,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:34:05,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 14:34:05,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 14:34:07,128 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-13 14:34:07,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:34:07,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:07,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:07,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:07,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:34:07,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:34:07,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 14:34:07,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:07,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:34:07,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:34:07,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:34:07,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:07,202 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 14:34:07,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144249193] [2020-10-13 14:34:07,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:34:07,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 14:34:07,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633366567] [2020-10-13 14:34:07,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 14:34:07,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:34:07,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 14:34:07,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:34:07,205 INFO L87 Difference]: Start difference. First operand 3924 states and 5290 transitions. Second operand 8 states. [2020-10-13 14:34:08,423 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 507 [2020-10-13 14:34:14,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:34:14,240 INFO L93 Difference]: Finished difference Result 8780 states and 12660 transitions. [2020-10-13 14:34:14,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 14:34:14,241 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2020-10-13 14:34:14,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:34:14,265 INFO L225 Difference]: With dead ends: 8780 [2020-10-13 14:34:14,266 INFO L226 Difference]: Without dead ends: 7226 [2020-10-13 14:34:14,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:34:14,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7226 states. [2020-10-13 14:34:14,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7226 to 3786. [2020-10-13 14:34:14,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3786 states. [2020-10-13 14:34:14,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3786 states to 3786 states and 5110 transitions. [2020-10-13 14:34:14,546 INFO L78 Accepts]: Start accepts. Automaton has 3786 states and 5110 transitions. Word has length 59 [2020-10-13 14:34:14,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:34:14,547 INFO L479 AbstractCegarLoop]: Abstraction has 3786 states and 5110 transitions. [2020-10-13 14:34:14,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 14:34:14,547 INFO L276 IsEmpty]: Start isEmpty. Operand 3786 states and 5110 transitions. [2020-10-13 14:34:14,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-13 14:34:14,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:34:14,551 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] [2020-10-13 14:34:14,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:34:14,551 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:34:14,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:34:14,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1087890717, now seen corresponding path program 1 times [2020-10-13 14:34:14,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:34:14,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436154149] [2020-10-13 14:34:14,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:34:14,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:14,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:14,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:14,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:15,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:16,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:16,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:16,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:17,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:17,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:17,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:19,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:19,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:19,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 14:34:19,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:34:19,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-13 14:34:19,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:19,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:34:19,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 14:34:19,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 14:34:19,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:20,946 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-13 14:34:20,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:34:20,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:20,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:20,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:20,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:34:20,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:34:20,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 14:34:20,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:20,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:34:20,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:34:20,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:34:20,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:21,008 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 14:34:21,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436154149] [2020-10-13 14:34:21,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:34:21,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:34:21,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296881347] [2020-10-13 14:34:21,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:34:21,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:34:21,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:34:21,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:34:21,011 INFO L87 Difference]: Start difference. First operand 3786 states and 5110 transitions. Second operand 10 states. [2020-10-13 14:34:22,276 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 517 [2020-10-13 14:34:30,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:34:30,440 INFO L93 Difference]: Finished difference Result 7312 states and 10346 transitions. [2020-10-13 14:34:30,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-13 14:34:30,440 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-10-13 14:34:30,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:34:30,466 INFO L225 Difference]: With dead ends: 7312 [2020-10-13 14:34:30,466 INFO L226 Difference]: Without dead ends: 7308 [2020-10-13 14:34:30,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=220, Invalid=902, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 14:34:30,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7308 states. [2020-10-13 14:34:30,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7308 to 3786. [2020-10-13 14:34:30,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3786 states. [2020-10-13 14:34:30,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3786 states to 3786 states and 5109 transitions. [2020-10-13 14:34:30,715 INFO L78 Accepts]: Start accepts. Automaton has 3786 states and 5109 transitions. Word has length 59 [2020-10-13 14:34:30,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:34:30,716 INFO L479 AbstractCegarLoop]: Abstraction has 3786 states and 5109 transitions. [2020-10-13 14:34:30,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:34:30,716 INFO L276 IsEmpty]: Start isEmpty. Operand 3786 states and 5109 transitions. [2020-10-13 14:34:30,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 14:34:30,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:34:30,720 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] [2020-10-13 14:34:30,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:34:30,721 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:34:30,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:34:30,721 INFO L82 PathProgramCache]: Analyzing trace with hash -847180308, now seen corresponding path program 1 times [2020-10-13 14:34:30,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:34:30,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74386303] [2020-10-13 14:34:30,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:34:30,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:30,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:30,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:31,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:31,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:33,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:34,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:34,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 14:34:34,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 14:34:34,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3578 [2020-10-13 14:34:34,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:34,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:34:34,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-13 14:34:34,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 14:34:34,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:35,458 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-13 14:34:35,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:34:35,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:35,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:35,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:35,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:34:35,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:34:35,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 14:34:35,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:35,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:34:35,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:34:35,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:34:35,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:35,503 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 14:34:35,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74386303] [2020-10-13 14:34:35,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:34:35,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:34:35,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376732779] [2020-10-13 14:34:35,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:34:35,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:34:35,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:34:35,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:34:35,505 INFO L87 Difference]: Start difference. First operand 3786 states and 5109 transitions. Second operand 4 states. [2020-10-13 14:34:40,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:34:40,202 INFO L93 Difference]: Finished difference Result 6408 states and 8984 transitions. [2020-10-13 14:34:40,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:34:40,203 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-10-13 14:34:40,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:34:40,214 INFO L225 Difference]: With dead ends: 6408 [2020-10-13 14:34:40,214 INFO L226 Difference]: Without dead ends: 4274 [2020-10-13 14:34:40,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:34:40,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4274 states. [2020-10-13 14:34:40,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4274 to 3558. [2020-10-13 14:34:40,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3558 states. [2020-10-13 14:34:40,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 4794 transitions. [2020-10-13 14:34:40,516 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 4794 transitions. Word has length 60 [2020-10-13 14:34:40,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:34:40,518 INFO L479 AbstractCegarLoop]: Abstraction has 3558 states and 4794 transitions. [2020-10-13 14:34:40,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:34:40,519 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 4794 transitions. [2020-10-13 14:34:40,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-13 14:34:40,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:34:40,523 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] [2020-10-13 14:34:40,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:34:40,524 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:34:40,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:34:40,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1515184943, now seen corresponding path program 1 times [2020-10-13 14:34:40,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:34:40,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998330138] [2020-10-13 14:34:40,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:34:40,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:40,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:40,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:40,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:40,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:40,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:41,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:41,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:41,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:42,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:42,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:43,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:45,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:45,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-13 14:34:45,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:34:45,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:34:45,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:45,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:34:45,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 14:34:45,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 14:34:45,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:46,709 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-13 14:34:46,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:34:46,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:46,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:46,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:46,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:34:46,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:34:46,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 14:34:46,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:46,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:34:46,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:34:46,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:34:46,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:46,767 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 14:34:46,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998330138] [2020-10-13 14:34:46,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:34:46,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:34:46,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459097903] [2020-10-13 14:34:46,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:34:46,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:34:46,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:34:46,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:34:46,771 INFO L87 Difference]: Start difference. First operand 3558 states and 4794 transitions. Second operand 4 states. [2020-10-13 14:34:47,941 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 500 [2020-10-13 14:34:51,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:34:51,020 INFO L93 Difference]: Finished difference Result 6276 states and 8824 transitions. [2020-10-13 14:34:51,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:34:51,021 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-10-13 14:34:51,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:34:51,030 INFO L225 Difference]: With dead ends: 6276 [2020-10-13 14:34:51,030 INFO L226 Difference]: Without dead ends: 3777 [2020-10-13 14:34:51,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:34:51,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3777 states. [2020-10-13 14:34:51,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3777 to 3775. [2020-10-13 14:34:51,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3775 states. [2020-10-13 14:34:51,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3775 states to 3775 states and 5287 transitions. [2020-10-13 14:34:51,354 INFO L78 Accepts]: Start accepts. Automaton has 3775 states and 5287 transitions. Word has length 61 [2020-10-13 14:34:51,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:34:51,355 INFO L479 AbstractCegarLoop]: Abstraction has 3775 states and 5287 transitions. [2020-10-13 14:34:51,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:34:51,355 INFO L276 IsEmpty]: Start isEmpty. Operand 3775 states and 5287 transitions. [2020-10-13 14:34:51,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 14:34:51,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:34:51,358 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] [2020-10-13 14:34:51,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:34:51,358 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:34:51,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:34:51,359 INFO L82 PathProgramCache]: Analyzing trace with hash -13406287, now seen corresponding path program 1 times [2020-10-13 14:34:51,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:34:51,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615111697] [2020-10-13 14:34:51,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:34:51,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:51,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:51,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:51,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:52,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:52,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:52,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:53,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:53,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:56,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:56,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 14:34:56,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:34:56,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 14:34:56,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:56,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:34:56,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 14:34:56,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 14:34:56,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:57,654 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-13 14:34:57,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:34:57,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:57,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:57,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:57,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:34:57,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:34:57,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 14:34:57,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:57,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:34:57,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:34:57,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:34:57,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:57,707 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 14:34:57,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615111697] [2020-10-13 14:34:57,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:34:57,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:34:57,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483188834] [2020-10-13 14:34:57,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:34:57,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:34:57,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:34:57,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:34:57,710 INFO L87 Difference]: Start difference. First operand 3775 states and 5287 transitions. Second operand 11 states. [2020-10-13 14:34:58,900 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 500 [2020-10-13 14:35:05,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:35:05,786 INFO L93 Difference]: Finished difference Result 11602 states and 16569 transitions. [2020-10-13 14:35:05,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 14:35:05,786 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 62 [2020-10-13 14:35:05,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:35:05,806 INFO L225 Difference]: With dead ends: 11602 [2020-10-13 14:35:05,807 INFO L226 Difference]: Without dead ends: 11598 [2020-10-13 14:35:05,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2020-10-13 14:35:05,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11598 states. [2020-10-13 14:35:06,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11598 to 3759. [2020-10-13 14:35:06,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3759 states. [2020-10-13 14:35:06,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3759 states to 3759 states and 5263 transitions. [2020-10-13 14:35:06,248 INFO L78 Accepts]: Start accepts. Automaton has 3759 states and 5263 transitions. Word has length 62 [2020-10-13 14:35:06,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:35:06,249 INFO L479 AbstractCegarLoop]: Abstraction has 3759 states and 5263 transitions. [2020-10-13 14:35:06,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:35:06,249 INFO L276 IsEmpty]: Start isEmpty. Operand 3759 states and 5263 transitions. [2020-10-13 14:35:06,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 14:35:06,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:35:06,254 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:35:06,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:35:06,254 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:35:06,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:35:06,255 INFO L82 PathProgramCache]: Analyzing trace with hash -296276202, now seen corresponding path program 1 times [2020-10-13 14:35:06,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:35:06,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045329491] [2020-10-13 14:35:06,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:35:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:06,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:06,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:06,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:06,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:06,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:07,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:07,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:07,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:09,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:09,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 14:35:09,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:35:09,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2835 [2020-10-13 14:35:09,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:09,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:35:09,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-13 14:35:09,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 14:35:09,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:10,280 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-13 14:35:10,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:35:10,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:10,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:10,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:10,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:35:10,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:35:10,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 14:35:10,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:10,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:35:10,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:35:10,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:35:10,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:10,330 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 14:35:10,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045329491] [2020-10-13 14:35:10,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:35:10,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:35:10,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420089211] [2020-10-13 14:35:10,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:35:10,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:35:10,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:35:10,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:35:10,332 INFO L87 Difference]: Start difference. First operand 3759 states and 5263 transitions. Second operand 4 states. [2020-10-13 14:35:11,528 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 507 [2020-10-13 14:35:15,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:35:15,201 INFO L93 Difference]: Finished difference Result 8587 states and 12473 transitions. [2020-10-13 14:35:15,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:35:15,202 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-10-13 14:35:15,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:35:15,209 INFO L225 Difference]: With dead ends: 8587 [2020-10-13 14:35:15,209 INFO L226 Difference]: Without dead ends: 6053 [2020-10-13 14:35:15,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:35:15,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6053 states. [2020-10-13 14:35:15,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6053 to 5607. [2020-10-13 14:35:15,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5607 states. [2020-10-13 14:35:15,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5607 states to 5607 states and 7967 transitions. [2020-10-13 14:35:15,682 INFO L78 Accepts]: Start accepts. Automaton has 5607 states and 7967 transitions. Word has length 70 [2020-10-13 14:35:15,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:35:15,683 INFO L479 AbstractCegarLoop]: Abstraction has 5607 states and 7967 transitions. [2020-10-13 14:35:15,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:35:15,683 INFO L276 IsEmpty]: Start isEmpty. Operand 5607 states and 7967 transitions. [2020-10-13 14:35:15,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-13 14:35:15,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:35:15,687 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] [2020-10-13 14:35:15,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 14:35:15,687 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:35:15,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:35:15,688 INFO L82 PathProgramCache]: Analyzing trace with hash -43443291, now seen corresponding path program 1 times [2020-10-13 14:35:15,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:35:15,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167635560] [2020-10-13 14:35:15,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:35:15,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:15,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:15,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:15,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:16,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:16,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:16,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:16,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:16,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:16,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:16,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:16,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:17,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:17,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 14:35:17,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:35:17,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1921 [2020-10-13 14:35:17,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:17,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:35:17,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-13 14:35:17,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 14:35:17,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:18,744 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-13 14:35:18,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:35:18,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:18,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:18,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:18,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:35:18,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:35:18,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 14:35:18,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:18,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:35:18,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:35:18,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:35:18,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:18,786 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 14:35:18,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167635560] [2020-10-13 14:35:18,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:35:18,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:35:18,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102144473] [2020-10-13 14:35:18,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:35:18,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:35:18,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:35:18,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:35:18,788 INFO L87 Difference]: Start difference. First operand 5607 states and 7967 transitions. Second operand 4 states. [2020-10-13 14:35:19,899 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 502 [2020-10-13 14:35:23,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:35:23,539 INFO L93 Difference]: Finished difference Result 14215 states and 20669 transitions. [2020-10-13 14:35:23,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:35:23,539 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-10-13 14:35:23,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:35:23,558 INFO L225 Difference]: With dead ends: 14215 [2020-10-13 14:35:23,559 INFO L226 Difference]: Without dead ends: 9833 [2020-10-13 14:35:23,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:35:23,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9833 states. [2020-10-13 14:35:24,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9833 to 9831. [2020-10-13 14:35:24,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9831 states. [2020-10-13 14:35:24,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9831 states to 9831 states and 14047 transitions. [2020-10-13 14:35:24,368 INFO L78 Accepts]: Start accepts. Automaton has 9831 states and 14047 transitions. Word has length 71 [2020-10-13 14:35:24,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:35:24,368 INFO L479 AbstractCegarLoop]: Abstraction has 9831 states and 14047 transitions. [2020-10-13 14:35:24,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:35:24,368 INFO L276 IsEmpty]: Start isEmpty. Operand 9831 states and 14047 transitions. [2020-10-13 14:35:24,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 14:35:24,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:35:24,372 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] [2020-10-13 14:35:24,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 14:35:24,372 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:35:24,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:35:24,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1667623616, now seen corresponding path program 1 times [2020-10-13 14:35:24,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:35:24,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903586713] [2020-10-13 14:35:24,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:35:24,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:24,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:24,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:24,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:24,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:24,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:24,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:24,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:25,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:25,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:26,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:26,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 14:35:26,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:35:26,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1936 [2020-10-13 14:35:26,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:26,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:35:26,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-13 14:35:26,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 14:35:26,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:27,464 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-13 14:35:27,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:35:27,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:27,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:27,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:27,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:35:27,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:35:27,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 14:35:27,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:27,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:35:27,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:35:27,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:35:27,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:27,505 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 14:35:27,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [903586713] [2020-10-13 14:35:27,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:35:27,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 14:35:27,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730005953] [2020-10-13 14:35:27,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:35:27,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:35:27,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:35:27,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:35:27,507 INFO L87 Difference]: Start difference. First operand 9831 states and 14047 transitions. Second operand 6 states. [2020-10-13 14:35:32,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:35:32,220 INFO L93 Difference]: Finished difference Result 18374 states and 26131 transitions. [2020-10-13 14:35:32,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 14:35:32,221 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2020-10-13 14:35:32,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:35:32,248 INFO L225 Difference]: With dead ends: 18374 [2020-10-13 14:35:32,248 INFO L226 Difference]: Without dead ends: 18372 [2020-10-13 14:35:32,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:35:32,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18372 states. [2020-10-13 14:35:33,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18372 to 10119. [2020-10-13 14:35:33,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10119 states. [2020-10-13 14:35:33,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10119 states to 10119 states and 14335 transitions. [2020-10-13 14:35:33,287 INFO L78 Accepts]: Start accepts. Automaton has 10119 states and 14335 transitions. Word has length 72 [2020-10-13 14:35:33,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:35:33,287 INFO L479 AbstractCegarLoop]: Abstraction has 10119 states and 14335 transitions. [2020-10-13 14:35:33,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:35:33,287 INFO L276 IsEmpty]: Start isEmpty. Operand 10119 states and 14335 transitions. [2020-10-13 14:35:33,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-13 14:35:33,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:35:33,291 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] [2020-10-13 14:35:33,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 14:35:33,291 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:35:33,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:35:33,291 INFO L82 PathProgramCache]: Analyzing trace with hash -41704227, now seen corresponding path program 1 times [2020-10-13 14:35:33,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:35:33,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859199752] [2020-10-13 14:35:33,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:35:33,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:33,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:33,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:33,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:33,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:33,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:33,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:33,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:34,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:34,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:34,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:36,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:36,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 14:35:36,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:35:36,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3012 [2020-10-13 14:35:36,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:36,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:35:36,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-13 14:35:36,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 14:35:36,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:37,486 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-13 14:35:37,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:35:37,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:37,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:37,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:37,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:35:37,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:35:37,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 14:35:37,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:37,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:35:37,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:35:37,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:35:37,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:37,531 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 14:35:37,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859199752] [2020-10-13 14:35:37,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:35:37,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:35:37,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925168406] [2020-10-13 14:35:37,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:35:37,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:35:37,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:35:37,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:35:37,533 INFO L87 Difference]: Start difference. First operand 10119 states and 14335 transitions. Second operand 4 states. [2020-10-13 14:35:38,694 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 501 [2020-10-13 14:35:43,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:35:43,288 INFO L93 Difference]: Finished difference Result 26695 states and 38237 transitions. [2020-10-13 14:35:43,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:35:43,289 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-10-13 14:35:43,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:35:43,312 INFO L225 Difference]: With dead ends: 26695 [2020-10-13 14:35:43,312 INFO L226 Difference]: Without dead ends: 17837 [2020-10-13 14:35:43,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:35:43,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17837 states. [2020-10-13 14:35:45,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17837 to 17835. [2020-10-13 14:35:45,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17835 states. [2020-10-13 14:35:45,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17835 states to 17835 states and 25283 transitions. [2020-10-13 14:35:45,926 INFO L78 Accepts]: Start accepts. Automaton has 17835 states and 25283 transitions. Word has length 73 [2020-10-13 14:35:45,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:35:45,926 INFO L479 AbstractCegarLoop]: Abstraction has 17835 states and 25283 transitions. [2020-10-13 14:35:45,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:35:45,927 INFO L276 IsEmpty]: Start isEmpty. Operand 17835 states and 25283 transitions. [2020-10-13 14:35:45,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-13 14:35:45,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:35:45,931 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] [2020-10-13 14:35:45,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 14:35:45,931 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:35:45,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:35:45,931 INFO L82 PathProgramCache]: Analyzing trace with hash -592243068, now seen corresponding path program 1 times [2020-10-13 14:35:45,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:35:45,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106336219] [2020-10-13 14:35:45,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:35:45,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:45,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:46,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:46,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:46,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:46,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:46,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:48,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:48,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:48,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:49,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:49,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:50,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:50,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 14:35:50,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:35:50,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 14:35:50,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:50,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:35:50,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-13 14:35:50,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 14:35:50,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:52,107 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-13 14:35:52,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:35:52,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:52,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:52,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:52,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:35:52,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:35:52,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 14:35:52,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:52,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:35:52,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:35:52,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:35:52,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:52,160 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 14:35:52,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106336219] [2020-10-13 14:35:52,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:35:52,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:35:52,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294820380] [2020-10-13 14:35:52,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:35:52,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:35:52,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:35:52,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:35:52,162 INFO L87 Difference]: Start difference. First operand 17835 states and 25283 transitions. Second operand 4 states. [2020-10-13 14:35:53,342 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 507 [2020-10-13 14:35:59,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:35:59,865 INFO L93 Difference]: Finished difference Result 49045 states and 69419 transitions. [2020-10-13 14:35:59,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:35:59,866 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2020-10-13 14:35:59,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:35:59,903 INFO L225 Difference]: With dead ends: 49045 [2020-10-13 14:35:59,904 INFO L226 Difference]: Without dead ends: 32423 [2020-10-13 14:35:59,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:35:59,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32423 states. [2020-10-13 14:36:02,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32423 to 28965. [2020-10-13 14:36:02,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28965 states. [2020-10-13 14:36:02,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28965 states to 28965 states and 40415 transitions. [2020-10-13 14:36:02,940 INFO L78 Accepts]: Start accepts. Automaton has 28965 states and 40415 transitions. Word has length 75 [2020-10-13 14:36:02,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:36:02,940 INFO L479 AbstractCegarLoop]: Abstraction has 28965 states and 40415 transitions. [2020-10-13 14:36:02,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:36:02,940 INFO L276 IsEmpty]: Start isEmpty. Operand 28965 states and 40415 transitions. [2020-10-13 14:36:02,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 14:36:02,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:36:02,944 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] [2020-10-13 14:36:02,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 14:36:02,945 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:36:02,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:36:02,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1744965693, now seen corresponding path program 1 times [2020-10-13 14:36:02,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:36:02,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512837287] [2020-10-13 14:36:02,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:36:02,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:36:02,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:03,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:03,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:03,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:03,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:03,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:03,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:04,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:05,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:05,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:05,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:05,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:07,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:36:07,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 14:36:07,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:36:07,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 14:36:07,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:36:07,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:36:07,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 14:36:07,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 14:36:07,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:36:09,101 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-13 14:36:09,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:36:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:36:09,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:09,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:36:09,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:36:09,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:36:09,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:36:09,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:36:09,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:36:09,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:36:09,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:36:09,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:36:09,146 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 14:36:09,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1512837287] [2020-10-13 14:36:09,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:36:09,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:36:09,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950881214] [2020-10-13 14:36:09,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:36:09,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:36:09,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:36:09,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:36:09,147 INFO L87 Difference]: Start difference. First operand 28965 states and 40415 transitions. Second operand 4 states. [2020-10-13 14:36:10,347 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 507 [2020-10-13 14:36:18,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:36:18,180 INFO L93 Difference]: Finished difference Result 72217 states and 100945 transitions. [2020-10-13 14:36:18,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:36:18,180 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-10-13 14:36:18,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:36:18,231 INFO L225 Difference]: With dead ends: 72217 [2020-10-13 14:36:18,231 INFO L226 Difference]: Without dead ends: 44367 [2020-10-13 14:36:18,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:36:18,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44367 states. [2020-10-13 14:36:23,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44367 to 41197. [2020-10-13 14:36:23,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41197 states. [2020-10-13 14:36:23,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41197 states to 41197 states and 56887 transitions. [2020-10-13 14:36:23,908 INFO L78 Accepts]: Start accepts. Automaton has 41197 states and 56887 transitions. Word has length 80 [2020-10-13 14:36:23,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:36:23,908 INFO L479 AbstractCegarLoop]: Abstraction has 41197 states and 56887 transitions. [2020-10-13 14:36:23,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:36:23,908 INFO L276 IsEmpty]: Start isEmpty. Operand 41197 states and 56887 transitions. [2020-10-13 14:36:23,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-13 14:36:23,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:36:23,917 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:36:23,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 14:36:23,917 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:36:23,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:36:23,918 INFO L82 PathProgramCache]: Analyzing trace with hash -94335280, now seen corresponding path program 1 times [2020-10-13 14:36:23,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:36:23,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772058288] [2020-10-13 14:36:23,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:36:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:36:23,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:24,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:24,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:24,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:24,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:24,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:24,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:24,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:24,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:26,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:36:26,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-13 14:36:26,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:36:26,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2302 [2020-10-13 14:36:26,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:36:26,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:36:26,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 14:36:26,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 14:36:26,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:36:27,409 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-13 14:36:27,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:36:27,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:36:27,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:27,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:36:27,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:36:27,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:36:27,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 14:36:27,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:36:27,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:36:27,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:36:27,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:36:27,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:36:27,460 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-13 14:36:27,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772058288] [2020-10-13 14:36:27,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:36:27,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 14:36:27,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414280176] [2020-10-13 14:36:27,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:36:27,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:36:27,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:36:27,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:36:27,462 INFO L87 Difference]: Start difference. First operand 41197 states and 56887 transitions. Second operand 6 states.