/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:36:08,795 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:36:08,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:36:08,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:36:08,840 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:36:08,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:36:08,849 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:36:08,851 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:36:08,853 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:36:08,856 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:36:08,857 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:36:08,859 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:36:08,859 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:36:08,862 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:36:08,864 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:36:08,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:36:08,868 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:36:08,870 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:36:08,871 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:36:08,875 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:36:08,879 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:36:08,880 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:36:08,881 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:36:08,883 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:36:08,893 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:36:08,893 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:36:08,894 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:36:08,894 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:36:08,895 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:36:08,899 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:36:08,899 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:36:08,902 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:36:08,902 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:36:08,903 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:36:08,904 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:36:08,904 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:36:08,905 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:36:08,905 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:36:08,905 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:36:08,906 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:36:08,907 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:36:08,908 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 19:36:08,946 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:36:08,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:36:08,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:36:08,949 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:36:08,949 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:36:08,949 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:36:08,950 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:36:08,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:36:08,950 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:36:08,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:36:08,951 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:36:08,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:36:08,952 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:36:08,952 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:36:08,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:36:08,953 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:36:08,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:36:08,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:36:08,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:36:08,953 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:36:08,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:36:08,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:36:08,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:36:08,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:36:08,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:36:08,955 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:36:08,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:36:08,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:36:08,955 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:36:08,955 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 19:36:09,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:36:09,246 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:36:09,252 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:36:09,254 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:36:09,255 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:36:09,255 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-12 19:36:09,310 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2531a8bac/70ff973109f940cba7dd4a13413e353c/FLAG7bdbbc236 [2020-10-12 19:36:09,776 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:36:09,777 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-12 19:36:09,788 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2531a8bac/70ff973109f940cba7dd4a13413e353c/FLAG7bdbbc236 [2020-10-12 19:36:10,106 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2531a8bac/70ff973109f940cba7dd4a13413e353c [2020-10-12 19:36:10,117 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:36:10,119 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:36:10,120 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:36:10,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:36:10,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:36:10,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:36:10" (1/1) ... [2020-10-12 19:36:10,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@103260cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:36:10, skipping insertion in model container [2020-10-12 19:36:10,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:36:10" (1/1) ... [2020-10-12 19:36:10,140 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:36:10,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:36:10,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:36:10,558 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:36:10,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:36:10,762 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:36:10,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:36:10 WrapperNode [2020-10-12 19:36:10,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:36:10,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:36:10,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:36:10,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:36:10,774 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:36:10" (1/1) ... [2020-10-12 19:36:10,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:36:10" (1/1) ... [2020-10-12 19:36:10,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:36:10" (1/1) ... [2020-10-12 19:36:10,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:36:10" (1/1) ... [2020-10-12 19:36:10,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:36:10" (1/1) ... [2020-10-12 19:36:10,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:36:10" (1/1) ... [2020-10-12 19:36:10,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:36:10" (1/1) ... [2020-10-12 19:36:10,824 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:36:10,824 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:36:10,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:36:10,825 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:36:10,826 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:36:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:36:10,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:36:10,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:36:10,879 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:36:10,879 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:36:10,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:36:10,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:36:10,880 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:36:10,880 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:36:10,880 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:36:10,880 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:36:10,880 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:36:10,880 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:36:10,881 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:36:10,881 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:36:10,881 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:36:10,881 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:36:10,881 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-12 19:36:10,881 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:36:10,882 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:36:10,882 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:36:10,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:36:10,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:36:11,630 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:36:11,631 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:36:11,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:36:11 BoogieIcfgContainer [2020-10-12 19:36:11,636 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:36:11,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:36:11,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:36:11,641 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:36:11,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:36:10" (1/3) ... [2020-10-12 19:36:11,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25cc9a08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:36:11, skipping insertion in model container [2020-10-12 19:36:11,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:36:10" (2/3) ... [2020-10-12 19:36:11,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25cc9a08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:36:11, skipping insertion in model container [2020-10-12 19:36:11,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:36:11" (3/3) ... [2020-10-12 19:36:11,645 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-12 19:36:11,657 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:36:11,665 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 19:36:11,680 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 19:36:11,707 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:36:11,707 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:36:11,707 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:36:11,708 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:36:11,708 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:36:11,708 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:36:11,708 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:36:11,709 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:36:11,732 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states. [2020-10-12 19:36:11,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 19:36:11,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:36:11,744 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] [2020-10-12 19:36:11,744 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:36:11,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:36:11,751 INFO L82 PathProgramCache]: Analyzing trace with hash 289215473, now seen corresponding path program 1 times [2020-10-12 19:36:11,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:36:11,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [991698004] [2020-10-12 19:36:11,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:36:12,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:36:12,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:12,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:12,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:12,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:12,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:12,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:13,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:13,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:17,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:36:17,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 19:36:17,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:36:17,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 19:36:17,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:36:17,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:36:17,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 19:36:17,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 19:36:17,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 19:36:17,442 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:36:17,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:36:17,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:36:17,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:17,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:36:17,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:36:17,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:36:17,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 19:36:17,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:36:17,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:36:17,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:36:17,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:36:17,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:36:17,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:36:17,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [991698004] [2020-10-12 19:36:17,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:36:17,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:36:17,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752314317] [2020-10-12 19:36:17,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:36:17,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:36:17,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:36:17,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:36:17,540 INFO L87 Difference]: Start difference. First operand 155 states. Second operand 7 states. [2020-10-12 19:36:17,894 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-12 19:36:19,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:36:19,407 INFO L93 Difference]: Finished difference Result 779 states and 1253 transitions. [2020-10-12 19:36:19,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:36:19,409 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 80 [2020-10-12 19:36:19,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:36:19,428 INFO L225 Difference]: With dead ends: 779 [2020-10-12 19:36:19,429 INFO L226 Difference]: Without dead ends: 642 [2020-10-12 19:36:19,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:36:19,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-10-12 19:36:19,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 317. [2020-10-12 19:36:19,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-10-12 19:36:19,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 463 transitions. [2020-10-12 19:36:19,511 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 463 transitions. Word has length 80 [2020-10-12 19:36:19,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:36:19,511 INFO L479 AbstractCegarLoop]: Abstraction has 317 states and 463 transitions. [2020-10-12 19:36:19,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:36:19,512 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 463 transitions. [2020-10-12 19:36:19,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-12 19:36:19,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:36:19,515 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:36:19,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:36:19,516 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:36:19,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:36:19,516 INFO L82 PathProgramCache]: Analyzing trace with hash -778747246, now seen corresponding path program 1 times [2020-10-12 19:36:19,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:36:19,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744017169] [2020-10-12 19:36:19,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:36:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:36:19,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:19,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:19,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:19,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:19,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:20,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:20,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:21,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:21,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:21,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:24,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:36:24,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 19:36:24,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:36:24,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:36:24,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:36:24,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:36:24,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 19:36:24,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 19:36:24,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-12 19:36:24,833 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:36:24,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:36:24,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:36:24,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:24,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:36:24,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:36:24,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:36:24,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:36:24,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:36:24,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:36:24,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:36:24,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:36:24,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:36:24,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:36:24,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744017169] [2020-10-12 19:36:24,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:36:24,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:36:24,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565469539] [2020-10-12 19:36:24,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:36:24,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:36:24,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:36:24,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:36:24,886 INFO L87 Difference]: Start difference. First operand 317 states and 463 transitions. Second operand 7 states. [2020-10-12 19:36:25,093 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-12 19:36:26,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:36:26,217 INFO L93 Difference]: Finished difference Result 1980 states and 3073 transitions. [2020-10-12 19:36:26,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:36:26,217 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 81 [2020-10-12 19:36:26,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:36:26,229 INFO L225 Difference]: With dead ends: 1980 [2020-10-12 19:36:26,229 INFO L226 Difference]: Without dead ends: 1728 [2020-10-12 19:36:26,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:36:26,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2020-10-12 19:36:26,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 796. [2020-10-12 19:36:26,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 796 states. [2020-10-12 19:36:26,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1205 transitions. [2020-10-12 19:36:26,320 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1205 transitions. Word has length 81 [2020-10-12 19:36:26,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:36:26,321 INFO L479 AbstractCegarLoop]: Abstraction has 796 states and 1205 transitions. [2020-10-12 19:36:26,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:36:26,321 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1205 transitions. [2020-10-12 19:36:26,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-12 19:36:26,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:36:26,324 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:36:26,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:36:26,325 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:36:26,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:36:26,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1820350400, now seen corresponding path program 1 times [2020-10-12 19:36:26,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:36:26,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276803537] [2020-10-12 19:36:26,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:36:26,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:36:26,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:26,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:26,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:26,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:26,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:27,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:27,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:27,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:31,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:36:31,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 19:36:31,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:36:31,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 19:36:31,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:36:31,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 19:36:31,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:36:31,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 19:36:31,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:36:32,024 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:36:32,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:36:32,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:36:32,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:32,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:36:32,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:36:32,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:36:32,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:36:32,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:36:32,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:36:32,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:36:32,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:36:32,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:36:32,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:36:32,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276803537] [2020-10-12 19:36:32,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:36:32,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 19:36:32,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906790087] [2020-10-12 19:36:32,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 19:36:32,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:36:32,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 19:36:32,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:36:32,090 INFO L87 Difference]: Start difference. First operand 796 states and 1205 transitions. Second operand 11 states. [2020-10-12 19:36:32,394 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 19:36:33,044 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-10-12 19:36:33,210 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-12 19:36:33,408 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-12 19:36:36,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:36:36,778 INFO L93 Difference]: Finished difference Result 6345 states and 9974 transitions. [2020-10-12 19:36:36,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 19:36:36,778 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 82 [2020-10-12 19:36:36,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:36:36,810 INFO L225 Difference]: With dead ends: 6345 [2020-10-12 19:36:36,810 INFO L226 Difference]: Without dead ends: 5909 [2020-10-12 19:36:36,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=211, Invalid=781, Unknown=0, NotChecked=0, Total=992 [2020-10-12 19:36:36,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5909 states. [2020-10-12 19:36:36,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5909 to 1129. [2020-10-12 19:36:36,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1129 states. [2020-10-12 19:36:36,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 1726 transitions. [2020-10-12 19:36:36,955 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 1726 transitions. Word has length 82 [2020-10-12 19:36:36,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:36:36,955 INFO L479 AbstractCegarLoop]: Abstraction has 1129 states and 1726 transitions. [2020-10-12 19:36:36,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 19:36:36,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 1726 transitions. [2020-10-12 19:36:36,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-12 19:36:36,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:36:36,958 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:36:36,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:36:36,958 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:36:36,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:36:36,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1322514415, now seen corresponding path program 1 times [2020-10-12 19:36:36,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:36:36,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908467182] [2020-10-12 19:36:36,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:36:36,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:36:36,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:37,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:37,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:37,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:37,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:37,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:37,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:38,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:41,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:41,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:41,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:41,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:41,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:41,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:36:41,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 19:36:41,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:36:41,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 19:36:41,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:36:41,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:36:41,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:36:41,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 19:36:41,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:36:42,439 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:36:42,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:36:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:36:42,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:42,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:36:42,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:36:42,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:36:42,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 19:36:42,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:36:42,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:36:42,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:36:42,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:36:42,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:36:42,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:36:42,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908467182] [2020-10-12 19:36:42,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:36:42,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:36:42,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234331130] [2020-10-12 19:36:42,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:36:42,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:36:42,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:36:42,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:36:42,571 INFO L87 Difference]: Start difference. First operand 1129 states and 1726 transitions. Second operand 12 states. [2020-10-12 19:36:42,887 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-12 19:36:46,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:36:46,579 INFO L93 Difference]: Finished difference Result 6168 states and 9608 transitions. [2020-10-12 19:36:46,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-12 19:36:46,580 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 82 [2020-10-12 19:36:46,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:36:46,602 INFO L225 Difference]: With dead ends: 6168 [2020-10-12 19:36:46,603 INFO L226 Difference]: Without dead ends: 5259 [2020-10-12 19:36:46,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=404, Invalid=1666, Unknown=0, NotChecked=0, Total=2070 [2020-10-12 19:36:46,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5259 states. [2020-10-12 19:36:46,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5259 to 1529. [2020-10-12 19:36:46,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1529 states. [2020-10-12 19:36:46,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1529 states to 1529 states and 2333 transitions. [2020-10-12 19:36:46,854 INFO L78 Accepts]: Start accepts. Automaton has 1529 states and 2333 transitions. Word has length 82 [2020-10-12 19:36:46,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:36:46,854 INFO L479 AbstractCegarLoop]: Abstraction has 1529 states and 2333 transitions. [2020-10-12 19:36:46,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:36:46,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1529 states and 2333 transitions. [2020-10-12 19:36:46,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-12 19:36:46,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:36:46,857 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:36:46,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:36:46,857 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:36:46,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:36:46,857 INFO L82 PathProgramCache]: Analyzing trace with hash -950907597, now seen corresponding path program 1 times [2020-10-12 19:36:46,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:36:46,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418344147] [2020-10-12 19:36:46,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:36:46,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:36:46,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:46,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:46,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:47,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:47,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:47,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:48,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:48,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:51,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:36:51,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-12 19:36:51,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:36:51,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 19:36:51,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:36:51,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 19:36:51,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:36:51,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 19:36:51,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:36:52,577 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:36:52,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:36:52,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:36:52,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:52,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:36:52,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:36:52,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:36:52,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:36:52,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:36:52,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:36:52,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:36:52,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:36:52,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:36:52,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:36:52,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418344147] [2020-10-12 19:36:52,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:36:52,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 19:36:52,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336451208] [2020-10-12 19:36:52,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 19:36:52,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:36:52,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 19:36:52,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:36:52,691 INFO L87 Difference]: Start difference. First operand 1529 states and 2333 transitions. Second operand 11 states. [2020-10-12 19:36:52,984 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 19:36:53,693 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2020-10-12 19:36:53,856 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-12 19:36:54,054 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-12 19:36:58,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:36:58,522 INFO L93 Difference]: Finished difference Result 8009 states and 12449 transitions. [2020-10-12 19:36:58,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-12 19:36:58,523 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 83 [2020-10-12 19:36:58,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:36:58,547 INFO L225 Difference]: With dead ends: 8009 [2020-10-12 19:36:58,547 INFO L226 Difference]: Without dead ends: 7475 [2020-10-12 19:36:58,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=250, Invalid=872, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 19:36:58,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7475 states. [2020-10-12 19:36:58,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7475 to 1549. [2020-10-12 19:36:58,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1549 states. [2020-10-12 19:36:58,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1549 states to 1549 states and 2353 transitions. [2020-10-12 19:36:58,908 INFO L78 Accepts]: Start accepts. Automaton has 1549 states and 2353 transitions. Word has length 83 [2020-10-12 19:36:58,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:36:58,909 INFO L479 AbstractCegarLoop]: Abstraction has 1549 states and 2353 transitions. [2020-10-12 19:36:58,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 19:36:58,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1549 states and 2353 transitions. [2020-10-12 19:36:58,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-12 19:36:58,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:36:58,913 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:36:58,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:36:58,914 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:36:58,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:36:58,914 INFO L82 PathProgramCache]: Analyzing trace with hash -679696604, now seen corresponding path program 1 times [2020-10-12 19:36:58,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:36:58,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469846226] [2020-10-12 19:36:58,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:36:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:36:58,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:58,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:58,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:59,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:59,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:59,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:01,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:01,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:01,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:01,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:02,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:03,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:37:03,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-12 19:37:03,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:37:03,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 19:37:03,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:37:03,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:37:03,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:37:03,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 19:37:03,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:37:04,179 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 18 [2020-10-12 19:37:04,459 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:37:04,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:37:04,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:37:04,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:04,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:37:04,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:37:04,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:37:04,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:37:04,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:37:04,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:37:04,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:37:04,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:37:04,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:37:04,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:37:04,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1469846226] [2020-10-12 19:37:04,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:37:04,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:37:04,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979225997] [2020-10-12 19:37:04,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:37:04,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:37:04,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:37:04,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:37:04,525 INFO L87 Difference]: Start difference. First operand 1549 states and 2353 transitions. Second operand 12 states. [2020-10-12 19:37:04,856 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-12 19:37:10,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:37:10,221 INFO L93 Difference]: Finished difference Result 8074 states and 12466 transitions. [2020-10-12 19:37:10,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-12 19:37:10,222 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 83 [2020-10-12 19:37:10,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:37:10,252 INFO L225 Difference]: With dead ends: 8074 [2020-10-12 19:37:10,252 INFO L226 Difference]: Without dead ends: 7345 [2020-10-12 19:37:10,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=271, Invalid=1061, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 19:37:10,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7345 states. [2020-10-12 19:37:10,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7345 to 1559. [2020-10-12 19:37:10,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1559 states. [2020-10-12 19:37:10,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 2366 transitions. [2020-10-12 19:37:10,538 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 2366 transitions. Word has length 83 [2020-10-12 19:37:10,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:37:10,539 INFO L479 AbstractCegarLoop]: Abstraction has 1559 states and 2366 transitions. [2020-10-12 19:37:10,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:37:10,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 2366 transitions. [2020-10-12 19:37:10,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-12 19:37:10,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:37:10,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:37:10,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:37:10,541 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:37:10,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:37:10,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1880223461, now seen corresponding path program 1 times [2020-10-12 19:37:10,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:37:10,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286670993] [2020-10-12 19:37:10,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:37:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:37:10,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:10,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:10,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:10,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:11,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:11,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:13,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:13,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:13,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:15,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:37:15,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 19:37:15,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:37:15,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 19:37:15,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:37:15,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:37:15,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:37:15,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 19:37:15,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:37:15,804 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:37:15,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:37:15,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:37:15,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:15,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:37:15,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:37:15,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:37:15,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:37:15,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:37:15,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:37:15,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:37:15,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:37:15,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:37:15,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:37:15,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286670993] [2020-10-12 19:37:15,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:37:15,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:37:15,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039174112] [2020-10-12 19:37:15,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:37:15,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:37:15,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:37:15,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:37:15,862 INFO L87 Difference]: Start difference. First operand 1559 states and 2366 transitions. Second operand 8 states. [2020-10-12 19:37:16,105 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-12 19:37:19,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:37:19,282 INFO L93 Difference]: Finished difference Result 13673 states and 21403 transitions. [2020-10-12 19:37:19,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:37:19,282 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-10-12 19:37:19,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:37:19,310 INFO L225 Difference]: With dead ends: 13673 [2020-10-12 19:37:19,310 INFO L226 Difference]: Without dead ends: 12521 [2020-10-12 19:37:19,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:37:19,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12521 states. [2020-10-12 19:37:19,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12521 to 2955. [2020-10-12 19:37:19,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2955 states. [2020-10-12 19:37:19,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2955 states to 2955 states and 4507 transitions. [2020-10-12 19:37:19,986 INFO L78 Accepts]: Start accepts. Automaton has 2955 states and 4507 transitions. Word has length 84 [2020-10-12 19:37:19,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:37:19,987 INFO L479 AbstractCegarLoop]: Abstraction has 2955 states and 4507 transitions. [2020-10-12 19:37:19,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:37:19,987 INFO L276 IsEmpty]: Start isEmpty. Operand 2955 states and 4507 transitions. [2020-10-12 19:37:19,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-12 19:37:19,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:37:19,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:37:19,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:37:19,990 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:37:19,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:37:19,991 INFO L82 PathProgramCache]: Analyzing trace with hash 380902104, now seen corresponding path program 1 times [2020-10-12 19:37:19,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:37:19,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631724733] [2020-10-12 19:37:19,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:37:20,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:37:20,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:20,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:20,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:20,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:20,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:20,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:20,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:20,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:21,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:23,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:23,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:23,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:24,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:25,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:37:25,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 19:37:25,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:37:25,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 19:37:25,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:37:25,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 19:37:25,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:37:25,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-12 19:37:25,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:37:25,681 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:37:25,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:37:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:37:25,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:25,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:37:25,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:37:25,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:37:25,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:37:25,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:37:25,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:37:25,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:37:25,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:37:25,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:37:25,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:37:25,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631724733] [2020-10-12 19:37:25,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:37:25,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 19:37:25,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777652705] [2020-10-12 19:37:25,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 19:37:25,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:37:25,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 19:37:25,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:37:25,725 INFO L87 Difference]: Start difference. First operand 2955 states and 4507 transitions. Second operand 13 states. [2020-10-12 19:37:26,275 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 161 [2020-10-12 19:37:39,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:37:39,774 INFO L93 Difference]: Finished difference Result 33661 states and 52342 transitions. [2020-10-12 19:37:39,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-12 19:37:39,774 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 85 [2020-10-12 19:37:39,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:37:39,833 INFO L225 Difference]: With dead ends: 33661 [2020-10-12 19:37:39,833 INFO L226 Difference]: Without dead ends: 32689 [2020-10-12 19:37:39,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=427, Invalid=1553, Unknown=0, NotChecked=0, Total=1980 [2020-10-12 19:37:39,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32689 states. [2020-10-12 19:37:40,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32689 to 3003. [2020-10-12 19:37:40,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3003 states. [2020-10-12 19:37:40,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3003 states to 3003 states and 4563 transitions. [2020-10-12 19:37:40,851 INFO L78 Accepts]: Start accepts. Automaton has 3003 states and 4563 transitions. Word has length 85 [2020-10-12 19:37:40,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:37:40,851 INFO L479 AbstractCegarLoop]: Abstraction has 3003 states and 4563 transitions. [2020-10-12 19:37:40,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 19:37:40,851 INFO L276 IsEmpty]: Start isEmpty. Operand 3003 states and 4563 transitions. [2020-10-12 19:37:40,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-12 19:37:40,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:37:40,854 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:37:40,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:37:40,854 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:37:40,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:37:40,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1667268271, now seen corresponding path program 1 times [2020-10-12 19:37:40,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:37:40,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85545397] [2020-10-12 19:37:40,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:37:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:37:40,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:40,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:40,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:40,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:41,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:41,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:41,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:41,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:42,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:42,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:42,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:42,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:43,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:45,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:37:45,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 19:37:45,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:37:45,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 19:37:45,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:37:45,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 19:37:45,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:37:45,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 19:37:45,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:37:46,267 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 28 [2020-10-12 19:37:46,475 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:37:46,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:37:46,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:37:46,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:46,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:37:46,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:37:46,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:37:46,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:37:46,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:37:46,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:37:46,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:37:46,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:37:46,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:37:46,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:37:46,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85545397] [2020-10-12 19:37:46,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:37:46,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:37:46,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481226040] [2020-10-12 19:37:46,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 19:37:46,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:37:46,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 19:37:46,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:37:46,517 INFO L87 Difference]: Start difference. First operand 3003 states and 4563 transitions. Second operand 14 states. [2020-10-12 19:37:46,690 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2020-10-12 19:37:47,191 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 161 [2020-10-12 19:37:47,789 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2020-10-12 19:37:47,956 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-10-12 19:37:48,130 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-10-12 19:37:48,334 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-10-12 19:37:49,329 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-10-12 19:37:50,642 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-10-12 19:37:50,932 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-10-12 19:37:52,575 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-10-12 19:37:52,868 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-10-12 19:37:53,064 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-10-12 19:37:53,458 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-10-12 19:37:53,685 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-10-12 19:37:58,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:37:58,497 INFO L93 Difference]: Finished difference Result 19283 states and 29610 transitions. [2020-10-12 19:37:58,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-12 19:37:58,497 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 85 [2020-10-12 19:37:58,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:37:58,525 INFO L225 Difference]: With dead ends: 19283 [2020-10-12 19:37:58,525 INFO L226 Difference]: Without dead ends: 17857 [2020-10-12 19:37:58,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=423, Invalid=1739, Unknown=0, NotChecked=0, Total=2162 [2020-10-12 19:37:58,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17857 states. [2020-10-12 19:37:59,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17857 to 3003. [2020-10-12 19:37:59,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3003 states. [2020-10-12 19:37:59,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3003 states to 3003 states and 4551 transitions. [2020-10-12 19:37:59,322 INFO L78 Accepts]: Start accepts. Automaton has 3003 states and 4551 transitions. Word has length 85 [2020-10-12 19:37:59,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:37:59,322 INFO L479 AbstractCegarLoop]: Abstraction has 3003 states and 4551 transitions. [2020-10-12 19:37:59,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 19:37:59,322 INFO L276 IsEmpty]: Start isEmpty. Operand 3003 states and 4551 transitions. [2020-10-12 19:37:59,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-12 19:37:59,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:37:59,324 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:37:59,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:37:59,325 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:37:59,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:37:59,325 INFO L82 PathProgramCache]: Analyzing trace with hash -730035588, now seen corresponding path program 1 times [2020-10-12 19:37:59,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:37:59,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449457357] [2020-10-12 19:37:59,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:37:59,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:37:59,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:59,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:59,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:59,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:59,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:00,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:00,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:00,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:01,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:01,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:01,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:01,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:03,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:03,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:04,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:38:04,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 19:38:04,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:38:04,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 19:38:04,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:38:04,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 19:38:04,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:38:04,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 19:38:04,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:38:04,981 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 62 [2020-10-12 19:38:05,403 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:38:05,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:38:05,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:38:05,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:05,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:38:05,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:38:05,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:38:05,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:38:05,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:38:05,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:38:05,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:38:05,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:38:05,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:38:05,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:38:05,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449457357] [2020-10-12 19:38:05,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:38:05,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-12 19:38:05,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689302477] [2020-10-12 19:38:05,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 19:38:05,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:38:05,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 19:38:05,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:38:05,449 INFO L87 Difference]: Start difference. First operand 3003 states and 4551 transitions. Second operand 16 states. [2020-10-12 19:38:05,610 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-10-12 19:38:06,197 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 164 [2020-10-12 19:38:07,084 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 52 [2020-10-12 19:38:07,325 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 60 [2020-10-12 19:38:07,804 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 76 [2020-10-12 19:38:08,030 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 59 [2020-10-12 19:38:08,297 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 59 [2020-10-12 19:38:08,589 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 55 [2020-10-12 19:38:08,881 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 62 [2020-10-12 19:38:09,323 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-10-12 19:38:09,732 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 55 [2020-10-12 19:38:10,036 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 55 [2020-10-12 19:38:10,169 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-10-12 19:38:10,637 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 58 [2020-10-12 19:38:11,018 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-12 19:38:13,663 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 56 [2020-10-12 19:38:13,898 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 59 [2020-10-12 19:38:15,341 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 63 [2020-10-12 19:38:16,089 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 63 [2020-10-12 19:38:16,361 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 66 [2020-10-12 19:38:16,722 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 79 [2020-10-12 19:38:16,996 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2020-10-12 19:38:17,202 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2020-10-12 19:38:17,382 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2020-10-12 19:38:17,569 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 45 [2020-10-12 19:38:17,758 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2020-10-12 19:38:17,941 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2020-10-12 19:38:18,139 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2020-10-12 19:38:18,459 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 64 [2020-10-12 19:38:18,758 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 79 [2020-10-12 19:38:19,141 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 67 [2020-10-12 19:38:19,464 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 82 [2020-10-12 19:38:19,708 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-12 19:38:20,250 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2020-10-12 19:38:21,021 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2020-10-12 19:38:21,285 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2020-10-12 19:38:21,557 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2020-10-12 19:38:21,958 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 80 [2020-10-12 19:38:22,112 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-12 19:38:22,348 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-12 19:38:22,585 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-12 19:38:22,971 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 83 [2020-10-12 19:38:31,890 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-12 19:38:33,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:38:33,215 INFO L93 Difference]: Finished difference Result 37043 states and 56728 transitions. [2020-10-12 19:38:33,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2020-10-12 19:38:33,215 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 85 [2020-10-12 19:38:33,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:38:33,271 INFO L225 Difference]: With dead ends: 37043 [2020-10-12 19:38:33,272 INFO L226 Difference]: Without dead ends: 34601 [2020-10-12 19:38:33,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2767 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=1248, Invalid=6942, Unknown=0, NotChecked=0, Total=8190 [2020-10-12 19:38:33,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34601 states. [2020-10-12 19:38:35,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34601 to 7390. [2020-10-12 19:38:35,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7390 states. [2020-10-12 19:38:35,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7390 states to 7390 states and 11234 transitions. [2020-10-12 19:38:35,488 INFO L78 Accepts]: Start accepts. Automaton has 7390 states and 11234 transitions. Word has length 85 [2020-10-12 19:38:35,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:38:35,488 INFO L479 AbstractCegarLoop]: Abstraction has 7390 states and 11234 transitions. [2020-10-12 19:38:35,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 19:38:35,488 INFO L276 IsEmpty]: Start isEmpty. Operand 7390 states and 11234 transitions. [2020-10-12 19:38:35,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-12 19:38:35,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:38:35,494 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:38:35,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 19:38:35,494 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:38:35,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:38:35,498 INFO L82 PathProgramCache]: Analyzing trace with hash -913009953, now seen corresponding path program 1 times [2020-10-12 19:38:35,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:38:35,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274437008] [2020-10-12 19:38:35,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:38:35,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:38:35,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:35,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:35,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:35,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:35,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:35,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:36,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:40,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:38:40,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 19:38:40,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:38:40,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 19:38:40,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:38:40,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 19:38:40,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:38:40,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-12 19:38:40,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:38:40,719 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 24 [2020-10-12 19:38:40,903 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:38:40,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:38:40,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:38:40,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:40,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:38:40,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:38:40,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:38:40,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:38:40,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:38:40,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:38:40,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:38:40,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:38:40,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:38:40,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:38:40,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274437008] [2020-10-12 19:38:40,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:38:40,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 19:38:40,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000363182] [2020-10-12 19:38:40,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 19:38:40,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:38:40,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 19:38:40,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:38:40,931 INFO L87 Difference]: Start difference. First operand 7390 states and 11234 transitions. Second operand 10 states. [2020-10-12 19:38:41,122 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-12 19:38:47,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:38:47,947 INFO L93 Difference]: Finished difference Result 21621 states and 33225 transitions. [2020-10-12 19:38:47,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:38:47,948 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2020-10-12 19:38:47,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:38:47,972 INFO L225 Difference]: With dead ends: 21621 [2020-10-12 19:38:47,972 INFO L226 Difference]: Without dead ends: 15578 [2020-10-12 19:38:47,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2020-10-12 19:38:47,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15578 states. [2020-10-12 19:38:50,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15578 to 7457. [2020-10-12 19:38:50,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7457 states. [2020-10-12 19:38:50,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7457 states to 7457 states and 11300 transitions. [2020-10-12 19:38:50,574 INFO L78 Accepts]: Start accepts. Automaton has 7457 states and 11300 transitions. Word has length 85 [2020-10-12 19:38:50,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:38:50,574 INFO L479 AbstractCegarLoop]: Abstraction has 7457 states and 11300 transitions. [2020-10-12 19:38:50,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 19:38:50,574 INFO L276 IsEmpty]: Start isEmpty. Operand 7457 states and 11300 transitions. [2020-10-12 19:38:50,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-12 19:38:50,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:38:50,580 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:38:50,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 19:38:50,581 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:38:50,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:38:50,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1308259768, now seen corresponding path program 1 times [2020-10-12 19:38:50,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:38:50,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174785562] [2020-10-12 19:38:50,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:38:50,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:38:50,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:50,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:50,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:51,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:51,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:51,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:51,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:51,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:51,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:51,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:51,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:51,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:52,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:53,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:53,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:54,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:55,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:38:55,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 19:38:55,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 19:38:55,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 19:38:55,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:38:55,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 19:38:55,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:38:55,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 19:38:55,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:38:56,074 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:38:56,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:38:56,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:38:56,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:56,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:38:56,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:38:56,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:38:56,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:38:56,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:38:56,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:38:56,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:38:56,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:38:56,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:38:56,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:38:56,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [174785562] [2020-10-12 19:38:56,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:38:56,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:38:56,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784892674] [2020-10-12 19:38:56,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 19:38:56,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:38:56,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 19:38:56,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:38:56,122 INFO L87 Difference]: Start difference. First operand 7457 states and 11300 transitions. Second operand 15 states. [2020-10-12 19:38:56,744 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 154 [2020-10-12 19:39:12,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:39:12,043 INFO L93 Difference]: Finished difference Result 29622 states and 45222 transitions. [2020-10-12 19:39:12,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-12 19:39:12,043 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 86 [2020-10-12 19:39:12,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:39:12,076 INFO L225 Difference]: With dead ends: 29622 [2020-10-12 19:39:12,077 INFO L226 Difference]: Without dead ends: 22998 [2020-10-12 19:39:12,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 621 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=478, Invalid=1972, Unknown=0, NotChecked=0, Total=2450 [2020-10-12 19:39:12,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22998 states. [2020-10-12 19:39:13,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22998 to 4998. [2020-10-12 19:39:13,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4998 states. [2020-10-12 19:39:13,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4998 states to 4998 states and 7552 transitions. [2020-10-12 19:39:13,976 INFO L78 Accepts]: Start accepts. Automaton has 4998 states and 7552 transitions. Word has length 86 [2020-10-12 19:39:13,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:39:13,977 INFO L479 AbstractCegarLoop]: Abstraction has 4998 states and 7552 transitions. [2020-10-12 19:39:13,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 19:39:13,977 INFO L276 IsEmpty]: Start isEmpty. Operand 4998 states and 7552 transitions. [2020-10-12 19:39:13,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-12 19:39:13,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:39:13,980 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:39:13,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 19:39:13,980 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:39:13,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:39:13,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1110666539, now seen corresponding path program 1 times [2020-10-12 19:39:13,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:39:13,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1998904066] [2020-10-12 19:39:13,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:39:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:39:14,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:14,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:14,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:14,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:14,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:14,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:14,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:14,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:14,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:16,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:16,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:16,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:17,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:17,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:17,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:17,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:18,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:18,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:18,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:18,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:18,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:19,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:39:19,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 19:39:19,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-12 19:39:19,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 19:39:19,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:39:19,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 19:39:19,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 19:39:19,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 19:39:19,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:39:19,311 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 42 [2020-10-12 19:39:19,871 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 19:39:19,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:39:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:39:19,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:19,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:39:19,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:39:19,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:39:19,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:39:19,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:39:19,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:39:19,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:39:19,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:39:19,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:39:19,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:39:19,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1998904066] [2020-10-12 19:39:19,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:39:19,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-12 19:39:19,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635198263] [2020-10-12 19:39:19,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 19:39:19,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:39:19,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 19:39:19,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:39:19,902 INFO L87 Difference]: Start difference. First operand 4998 states and 7552 transitions. Second operand 16 states. [2020-10-12 19:39:20,387 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 152 [2020-10-12 19:39:20,736 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-10-12 19:39:20,932 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-10-12 19:39:21,173 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-10-12 19:39:21,573 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-10-12 19:39:21,817 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2020-10-12 19:39:22,079 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2020-10-12 19:39:22,336 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-10-12 19:39:22,487 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-10-12 19:39:22,738 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-10-12 19:39:22,977 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2020-10-12 19:39:23,669 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-10-12 19:39:24,645 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-10-12 19:39:25,759 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-10-12 19:39:26,083 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-10-12 19:39:27,233 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2020-10-12 19:39:31,353 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2020-10-12 19:39:31,855 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-10-12 19:39:32,323 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2020-10-12 19:40:00,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:40:00,036 INFO L93 Difference]: Finished difference Result 66719 states and 100322 transitions. [2020-10-12 19:40:00,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-12 19:40:00,037 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 86 [2020-10-12 19:40:00,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:40:00,099 INFO L225 Difference]: With dead ends: 66719 [2020-10-12 19:40:00,099 INFO L226 Difference]: Without dead ends: 62767 [2020-10-12 19:40:00,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1238 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=753, Invalid=3029, Unknown=0, NotChecked=0, Total=3782 [2020-10-12 19:40:00,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62767 states.