/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:12:34,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:12:34,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:12:34,728 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:12:34,728 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:12:34,730 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:12:34,731 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:12:34,733 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:12:34,734 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:12:34,735 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:12:34,736 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:12:34,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:12:34,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:12:34,739 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:12:34,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:12:34,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:12:34,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:12:34,743 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:12:34,744 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:12:34,746 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:12:34,748 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:12:34,749 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:12:34,750 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:12:34,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:12:34,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:12:34,756 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:12:34,756 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:12:34,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:12:34,758 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:12:34,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:12:34,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:12:34,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:12:34,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:12:34,765 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:12:34,769 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:12:34,769 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:12:34,770 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:12:34,770 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:12:34,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:12:34,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:12:34,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:12:34,774 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 [2020-10-15 03:12:34,825 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:12:34,826 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:12:34,827 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:12:34,827 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:12:34,827 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:12:34,828 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:12:34,828 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:12:34,829 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:12:34,829 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:12:34,829 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:12:34,829 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:12:34,830 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:12:34,830 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:12:34,830 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:12:34,830 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:12:34,830 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:12:34,831 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:12:34,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:12:34,832 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:12:34,832 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:12:34,832 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:12:34,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:12:34,833 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:12:34,833 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:12:34,833 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:12:34,833 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:12:34,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:12:34,834 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:12:34,834 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:12:34,834 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 03:12:35,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:12:35,259 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:12:35,265 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:12:35,267 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:12:35,267 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:12:35,268 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-15 03:12:35,337 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cede230a2/b9c3c8a4bbea49d5bc4ca075dc6632c8/FLAG2678ad835 [2020-10-15 03:12:36,197 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:12:36,198 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-15 03:12:36,238 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cede230a2/b9c3c8a4bbea49d5bc4ca075dc6632c8/FLAG2678ad835 [2020-10-15 03:12:36,733 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cede230a2/b9c3c8a4bbea49d5bc4ca075dc6632c8 [2020-10-15 03:12:36,743 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:12:36,745 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:12:36,747 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:12:36,747 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:12:36,751 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:12:36,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:12:36" (1/1) ... [2020-10-15 03:12:36,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@336ce4d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:12:36, skipping insertion in model container [2020-10-15 03:12:36,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:12:36" (1/1) ... [2020-10-15 03:12:36,763 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:12:36,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:12:37,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:12:37,422 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:12:37,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:12:37,622 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:12:37,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:12:37 WrapperNode [2020-10-15 03:12:37,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:12:37,625 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:12:37,625 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:12:37,625 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:12:37,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:12:37" (1/1) ... [2020-10-15 03:12:37,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:12:37" (1/1) ... [2020-10-15 03:12:37,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:12:37" (1/1) ... [2020-10-15 03:12:37,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:12:37" (1/1) ... [2020-10-15 03:12:37,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:12:37" (1/1) ... [2020-10-15 03:12:37,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:12:37" (1/1) ... [2020-10-15 03:12:37,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:12:37" (1/1) ... [2020-10-15 03:12:37,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:12:37,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:12:37,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:12:37,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:12:37,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:12:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:12:37,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:12:37,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:12:37,822 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:12:37,823 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:12:37,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:12:37,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:12:37,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:12:37,824 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:12:37,825 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:12:37,825 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:12:37,825 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:12:37,825 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:12:37,826 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:12:37,826 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:12:37,826 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:12:37,827 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:12:37,827 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:12:37,828 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:12:37,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:12:37,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:12:39,246 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:12:39,247 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:12:39,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:12:39 BoogieIcfgContainer [2020-10-15 03:12:39,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:12:39,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:12:39,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:12:39,258 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:12:39,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:12:36" (1/3) ... [2020-10-15 03:12:39,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ffb6d84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:12:39, skipping insertion in model container [2020-10-15 03:12:39,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:12:37" (2/3) ... [2020-10-15 03:12:39,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ffb6d84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:12:39, skipping insertion in model container [2020-10-15 03:12:39,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:12:39" (3/3) ... [2020-10-15 03:12:39,262 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-15 03:12:39,275 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:12:39,283 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-10-15 03:12:39,302 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-15 03:12:39,337 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:12:39,337 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:12:39,338 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:12:39,338 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:12:39,338 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:12:39,338 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:12:39,338 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:12:39,338 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:12:39,367 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states. [2020-10-15 03:12:39,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-15 03:12:39,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:12:39,379 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] [2020-10-15 03:12:39,380 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:12:39,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:12:39,387 INFO L82 PathProgramCache]: Analyzing trace with hash -932481986, now seen corresponding path program 1 times [2020-10-15 03:12:39,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:12:39,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689786689] [2020-10-15 03:12:39,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:12:39,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:12:39,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:39,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:40,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:40,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:41,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:41,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:41,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:41,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:42,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:44,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:44,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:44,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:44,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:44,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:44,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:12:44,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-15 03:12:44,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:12:44,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-15 03:12:44,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:12:44,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:12:44,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:12:44,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:12:44,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 03:12:44,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 03:12:45,147 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:12:45,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:12:45,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:12:45,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:45,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:12:45,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:12:45,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:12:45,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-15 03:12:45,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:12:45,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:12:45,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:12:45,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:12:45,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:12:45,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:12:45,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:12:45,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1689786689] [2020-10-15 03:12:45,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:12:45,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:12:45,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923040127] [2020-10-15 03:12:45,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:12:45,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:12:45,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:12:45,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:12:45,244 INFO L87 Difference]: Start difference. First operand 212 states. Second operand 7 states. [2020-10-15 03:12:45,544 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-15 03:12:47,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:12:47,043 INFO L93 Difference]: Finished difference Result 538 states and 872 transitions. [2020-10-15 03:12:47,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:12:47,046 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-10-15 03:12:47,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:12:47,065 INFO L225 Difference]: With dead ends: 538 [2020-10-15 03:12:47,065 INFO L226 Difference]: Without dead ends: 434 [2020-10-15 03:12:47,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:12:47,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-10-15 03:12:47,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 232. [2020-10-15 03:12:47,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-15 03:12:47,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 288 transitions. [2020-10-15 03:12:47,148 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 288 transitions. Word has length 51 [2020-10-15 03:12:47,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:12:47,149 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 288 transitions. [2020-10-15 03:12:47,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:12:47,150 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 288 transitions. [2020-10-15 03:12:47,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-15 03:12:47,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:12:47,153 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] [2020-10-15 03:12:47,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:12:47,154 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:12:47,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:12:47,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1841418149, now seen corresponding path program 1 times [2020-10-15 03:12:47,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:12:47,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020987593] [2020-10-15 03:12:47,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:12:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:12:47,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:47,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:47,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:47,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:47,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:48,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:48,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:48,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:50,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:50,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:50,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:50,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:51,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:52,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:52,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:12:52,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-15 03:12:52,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:12:52,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:12:52,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:12:52,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:12:52,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:12:52,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:12:52,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 03:12:52,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:12:52,862 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 32 [2020-10-15 03:12:53,159 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:12:53,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:12:53,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:12:53,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:53,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:12:53,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:12:53,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:12:53,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:12:53,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:12:53,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:12:53,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:12:53,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:12:53,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:12:53,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:12:53,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:12:53,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020987593] [2020-10-15 03:12:53,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:12:53,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:12:53,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699143331] [2020-10-15 03:12:53,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:12:53,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:12:53,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:12:53,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:12:53,206 INFO L87 Difference]: Start difference. First operand 232 states and 288 transitions. Second operand 8 states. [2020-10-15 03:12:53,413 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 03:12:54,325 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2020-10-15 03:12:55,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:12:55,849 INFO L93 Difference]: Finished difference Result 727 states and 970 transitions. [2020-10-15 03:12:55,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 03:12:55,849 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-10-15 03:12:55,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:12:55,855 INFO L225 Difference]: With dead ends: 727 [2020-10-15 03:12:55,855 INFO L226 Difference]: Without dead ends: 656 [2020-10-15 03:12:55,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-10-15 03:12:55,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2020-10-15 03:12:55,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 441. [2020-10-15 03:12:55,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-10-15 03:12:55,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 595 transitions. [2020-10-15 03:12:55,921 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 595 transitions. Word has length 51 [2020-10-15 03:12:55,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:12:55,922 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 595 transitions. [2020-10-15 03:12:55,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:12:55,922 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 595 transitions. [2020-10-15 03:12:55,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-15 03:12:55,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:12:55,926 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] [2020-10-15 03:12:55,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:12:55,926 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:12:55,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:12:55,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1896116347, now seen corresponding path program 1 times [2020-10-15 03:12:55,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:12:55,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851328890] [2020-10-15 03:12:55,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:12:55,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:12:55,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:56,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:56,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:56,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:56,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:56,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:56,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:57,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:59,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:59,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:59,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:12:59,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:00,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:00,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:13:00,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-15 03:13:00,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:13:00,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 03:13:00,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:13:00,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:13:00,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:13:00,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:13:00,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 03:13:00,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:13:01,217 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:13:01,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:13:01,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:13:01,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:01,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:13:01,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:13:01,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:13:01,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-15 03:13:01,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:13:01,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:13:01,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:13:01,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:13:01,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:13:01,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:13:01,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:13:01,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851328890] [2020-10-15 03:13:01,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:13:01,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:13:01,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114832365] [2020-10-15 03:13:01,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:13:01,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:13:01,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:13:01,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:13:01,303 INFO L87 Difference]: Start difference. First operand 441 states and 595 transitions. Second operand 8 states. [2020-10-15 03:13:01,506 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-15 03:13:02,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:13:02,913 INFO L93 Difference]: Finished difference Result 1055 states and 1518 transitions. [2020-10-15 03:13:02,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:13:02,913 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-10-15 03:13:02,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:13:02,919 INFO L225 Difference]: With dead ends: 1055 [2020-10-15 03:13:02,920 INFO L226 Difference]: Without dead ends: 817 [2020-10-15 03:13:02,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:13:02,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2020-10-15 03:13:02,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 433. [2020-10-15 03:13:02,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2020-10-15 03:13:02,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 576 transitions. [2020-10-15 03:13:02,999 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 576 transitions. Word has length 51 [2020-10-15 03:13:02,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:13:02,999 INFO L479 AbstractCegarLoop]: Abstraction has 433 states and 576 transitions. [2020-10-15 03:13:03,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:13:03,000 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 576 transitions. [2020-10-15 03:13:03,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 03:13:03,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:13:03,003 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] [2020-10-15 03:13:03,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:13:03,004 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:13:03,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:13:03,004 INFO L82 PathProgramCache]: Analyzing trace with hash 191810917, now seen corresponding path program 1 times [2020-10-15 03:13:03,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:13:03,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1701037437] [2020-10-15 03:13:03,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:13:03,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:13:03,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:03,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:03,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:03,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:03,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:03,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:03,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:04,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:04,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:05,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:05,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:06,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:07,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:08,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:13:08,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 03:13:08,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:13:08,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 03:13:08,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:13:08,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:13:08,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:13:08,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:13:08,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 03:13:08,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:13:08,361 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:13:08,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:13:08,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:13:08,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:08,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:13:08,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:13:08,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:13:08,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 03:13:08,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:13:08,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:13:08,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:13:08,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:13:08,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:13:08,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:13:08,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:13:08,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1701037437] [2020-10-15 03:13:08,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:13:08,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:13:08,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419455474] [2020-10-15 03:13:08,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:13:08,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:13:08,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:13:08,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:13:08,409 INFO L87 Difference]: Start difference. First operand 433 states and 576 transitions. Second operand 8 states. [2020-10-15 03:13:08,597 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 03:13:09,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:13:09,840 INFO L93 Difference]: Finished difference Result 731 states and 986 transitions. [2020-10-15 03:13:09,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:13:09,840 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-10-15 03:13:09,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:13:09,845 INFO L225 Difference]: With dead ends: 731 [2020-10-15 03:13:09,845 INFO L226 Difference]: Without dead ends: 674 [2020-10-15 03:13:09,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:13:09,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2020-10-15 03:13:09,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 264. [2020-10-15 03:13:09,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-15 03:13:09,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 328 transitions. [2020-10-15 03:13:09,872 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 328 transitions. Word has length 52 [2020-10-15 03:13:09,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:13:09,873 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 328 transitions. [2020-10-15 03:13:09,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:13:09,873 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 328 transitions. [2020-10-15 03:13:09,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 03:13:09,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:13:09,875 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] [2020-10-15 03:13:09,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:13:09,876 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:13:09,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:13:09,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1711023661, now seen corresponding path program 1 times [2020-10-15 03:13:09,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:13:09,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628479065] [2020-10-15 03:13:09,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:13:09,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:13:09,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:09,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:09,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:10,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:10,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:10,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:10,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:11,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:11,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:11,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:11,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:12,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:12,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:12,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:12,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:13,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:13,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:13,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:13,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:14,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:13:14,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 03:13:14,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-15 03:13:14,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 03:13:14,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:13:14,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:13:14,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:13:14,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:13:14,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 03:13:14,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:13:15,138 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:13:15,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:13:15,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:13:15,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:15,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:13:15,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:13:15,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:13:15,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-15 03:13:15,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:13:15,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:13:15,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:13:15,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:13:15,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:13:15,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:13:15,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:13:15,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628479065] [2020-10-15 03:13:15,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:13:15,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:13:15,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804452194] [2020-10-15 03:13:15,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:13:15,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:13:15,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:13:15,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:13:15,190 INFO L87 Difference]: Start difference. First operand 264 states and 328 transitions. Second operand 7 states. [2020-10-15 03:13:15,442 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-15 03:13:16,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:13:16,696 INFO L93 Difference]: Finished difference Result 498 states and 654 transitions. [2020-10-15 03:13:16,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:13:16,698 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-10-15 03:13:16,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:13:16,703 INFO L225 Difference]: With dead ends: 498 [2020-10-15 03:13:16,703 INFO L226 Difference]: Without dead ends: 440 [2020-10-15 03:13:16,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:13:16,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2020-10-15 03:13:16,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 278. [2020-10-15 03:13:16,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-10-15 03:13:16,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 344 transitions. [2020-10-15 03:13:16,737 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 344 transitions. Word has length 52 [2020-10-15 03:13:16,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:13:16,738 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 344 transitions. [2020-10-15 03:13:16,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:13:16,738 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 344 transitions. [2020-10-15 03:13:16,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 03:13:16,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:13:16,740 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] [2020-10-15 03:13:16,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:13:16,740 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:13:16,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:13:16,741 INFO L82 PathProgramCache]: Analyzing trace with hash 542201006, now seen corresponding path program 1 times [2020-10-15 03:13:16,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:13:16,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077971308] [2020-10-15 03:13:16,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:13:16,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:13:16,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:16,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:16,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:17,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:17,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:17,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:17,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:17,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:18,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:18,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:18,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:18,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:19,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:19,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:19,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:20,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:20,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:21,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:21,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:13:21,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 03:13:21,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-15 03:13:21,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:13:21,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:13:21,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:13:21,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:13:21,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:13:21,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 03:13:21,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:13:22,095 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:13:22,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:13:22,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:13:22,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:22,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:13:22,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:13:22,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:13:22,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 03:13:22,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:13:22,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:13:22,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:13:22,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:13:22,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:13:22,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:13:22,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:13:22,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077971308] [2020-10-15 03:13:22,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:13:22,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:13:22,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152496278] [2020-10-15 03:13:22,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:13:22,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:13:22,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:13:22,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:13:22,141 INFO L87 Difference]: Start difference. First operand 278 states and 344 transitions. Second operand 8 states. [2020-10-15 03:13:22,446 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 03:13:24,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:13:24,616 INFO L93 Difference]: Finished difference Result 876 states and 1179 transitions. [2020-10-15 03:13:24,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 03:13:24,617 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-10-15 03:13:24,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:13:24,622 INFO L225 Difference]: With dead ends: 876 [2020-10-15 03:13:24,622 INFO L226 Difference]: Without dead ends: 796 [2020-10-15 03:13:24,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2020-10-15 03:13:24,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2020-10-15 03:13:24,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 282. [2020-10-15 03:13:24,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-10-15 03:13:24,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 348 transitions. [2020-10-15 03:13:24,653 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 348 transitions. Word has length 52 [2020-10-15 03:13:24,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:13:24,654 INFO L479 AbstractCegarLoop]: Abstraction has 282 states and 348 transitions. [2020-10-15 03:13:24,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:13:24,654 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 348 transitions. [2020-10-15 03:13:24,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-15 03:13:24,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:13:24,656 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] [2020-10-15 03:13:24,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:13:24,656 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:13:24,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:13:24,657 INFO L82 PathProgramCache]: Analyzing trace with hash -290464131, now seen corresponding path program 1 times [2020-10-15 03:13:24,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:13:24,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025382858] [2020-10-15 03:13:24,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:13:24,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:13:24,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:24,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:24,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:24,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:24,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:25,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:25,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:25,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:25,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:29,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:13:29,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-15 03:13:29,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:13:29,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 03:13:29,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:13:29,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:13:29,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:13:29,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:13:29,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 03:13:29,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:13:30,086 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:13:30,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:13:30,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:13:30,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:30,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:13:30,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:13:30,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:13:30,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:13:30,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:13:30,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:13:30,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:13:30,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:13:30,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:13:30,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:13:30,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:13:30,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025382858] [2020-10-15 03:13:30,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:13:30,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:13:30,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890248811] [2020-10-15 03:13:30,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:13:30,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:13:30,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:13:30,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:13:30,129 INFO L87 Difference]: Start difference. First operand 282 states and 348 transitions. Second operand 9 states. [2020-10-15 03:13:30,333 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-15 03:13:31,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:13:31,794 INFO L93 Difference]: Finished difference Result 492 states and 630 transitions. [2020-10-15 03:13:31,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:13:31,795 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-10-15 03:13:31,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:13:31,799 INFO L225 Difference]: With dead ends: 492 [2020-10-15 03:13:31,800 INFO L226 Difference]: Without dead ends: 474 [2020-10-15 03:13:31,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:13:31,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2020-10-15 03:13:31,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 264. [2020-10-15 03:13:31,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-15 03:13:31,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 327 transitions. [2020-10-15 03:13:31,834 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 327 transitions. Word has length 53 [2020-10-15 03:13:31,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:13:31,835 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 327 transitions. [2020-10-15 03:13:31,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:13:31,835 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 327 transitions. [2020-10-15 03:13:31,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-15 03:13:31,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:13:31,836 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] [2020-10-15 03:13:31,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:13:31,837 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:13:31,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:13:31,837 INFO L82 PathProgramCache]: Analyzing trace with hash -859483155, now seen corresponding path program 1 times [2020-10-15 03:13:31,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:13:31,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1671490022] [2020-10-15 03:13:31,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:13:31,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:13:31,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:31,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:32,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:32,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:32,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:32,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:32,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:33,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:33,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:33,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:33,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:34,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:34,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:34,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:34,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:35,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:35,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:36,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:36,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:13:36,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-15 03:13:36,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-15 03:13:36,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 03:13:36,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:13:36,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:13:36,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:13:36,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:13:36,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 03:13:36,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:13:37,318 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:13:37,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:13:37,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:13:37,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:37,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:13:37,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:13:37,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:13:37,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:13:37,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:13:37,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:13:37,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:13:37,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:13:37,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:13:37,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:13:37,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:13:37,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1671490022] [2020-10-15 03:13:37,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:13:37,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:13:37,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903108688] [2020-10-15 03:13:37,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:13:37,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:13:37,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:13:37,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:13:37,365 INFO L87 Difference]: Start difference. First operand 264 states and 327 transitions. Second operand 9 states. [2020-10-15 03:13:37,596 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-15 03:13:39,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:13:39,358 INFO L93 Difference]: Finished difference Result 495 states and 646 transitions. [2020-10-15 03:13:39,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:13:39,359 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-10-15 03:13:39,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:13:39,361 INFO L225 Difference]: With dead ends: 495 [2020-10-15 03:13:39,361 INFO L226 Difference]: Without dead ends: 441 [2020-10-15 03:13:39,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-15 03:13:39,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2020-10-15 03:13:39,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 253. [2020-10-15 03:13:39,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-10-15 03:13:39,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 312 transitions. [2020-10-15 03:13:39,393 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 312 transitions. Word has length 53 [2020-10-15 03:13:39,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:13:39,394 INFO L479 AbstractCegarLoop]: Abstraction has 253 states and 312 transitions. [2020-10-15 03:13:39,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:13:39,394 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 312 transitions. [2020-10-15 03:13:39,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-15 03:13:39,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:13:39,395 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] [2020-10-15 03:13:39,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:13:39,395 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:13:39,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:13:39,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1526317123, now seen corresponding path program 1 times [2020-10-15 03:13:39,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:13:39,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383984302] [2020-10-15 03:13:39,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:13:39,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:13:39,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:39,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:39,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:39,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:39,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:39,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:40,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:40,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:40,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:44,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:13:44,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-15 03:13:44,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:13:44,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:13:44,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:13:44,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:13:44,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:13:44,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:13:44,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 03:13:44,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:13:44,698 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:13:44,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:13:44,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:13:44,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:44,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:13:44,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:13:44,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:13:44,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:13:44,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:13:44,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:13:44,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:13:44,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:13:44,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:13:44,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:13:44,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:13:44,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383984302] [2020-10-15 03:13:44,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:13:44,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:13:44,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027703954] [2020-10-15 03:13:44,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:13:44,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:13:44,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:13:44,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:13:44,728 INFO L87 Difference]: Start difference. First operand 253 states and 312 transitions. Second operand 8 states. [2020-10-15 03:13:45,094 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-15 03:13:46,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:13:46,441 INFO L93 Difference]: Finished difference Result 478 states and 623 transitions. [2020-10-15 03:13:46,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:13:46,442 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-10-15 03:13:46,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:13:46,444 INFO L225 Difference]: With dead ends: 478 [2020-10-15 03:13:46,444 INFO L226 Difference]: Without dead ends: 401 [2020-10-15 03:13:46,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-15 03:13:46,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2020-10-15 03:13:46,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 195. [2020-10-15 03:13:46,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-10-15 03:13:46,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 236 transitions. [2020-10-15 03:13:46,483 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 236 transitions. Word has length 53 [2020-10-15 03:13:46,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:13:46,484 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 236 transitions. [2020-10-15 03:13:46,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:13:46,484 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 236 transitions. [2020-10-15 03:13:46,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-15 03:13:46,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:13:46,485 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] [2020-10-15 03:13:46,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:13:46,485 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:13:46,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:13:46,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1168116926, now seen corresponding path program 1 times [2020-10-15 03:13:46,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:13:46,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116277671] [2020-10-15 03:13:46,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:13:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:13:46,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:46,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:46,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:46,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:46,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:47,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:47,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:47,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:48,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:51,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:13:51,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-15 03:13:51,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:13:51,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-15 03:13:51,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:13:51,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:13:51,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:13:51,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:13:51,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 03:13:51,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:13:51,940 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:13:51,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:13:51,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:13:51,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:51,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:13:51,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:13:51,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:13:51,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:13:51,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:13:51,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:13:51,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:13:51,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:13:51,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:13:51,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:13:51,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:13:51,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116277671] [2020-10-15 03:13:51,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:13:51,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:13:51,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845951123] [2020-10-15 03:13:51,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:13:51,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:13:51,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:13:51,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:13:51,976 INFO L87 Difference]: Start difference. First operand 195 states and 236 transitions. Second operand 9 states. [2020-10-15 03:13:52,307 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-15 03:13:53,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:13:53,862 INFO L93 Difference]: Finished difference Result 581 states and 775 transitions. [2020-10-15 03:13:53,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:13:53,863 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-10-15 03:13:53,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:13:53,867 INFO L225 Difference]: With dead ends: 581 [2020-10-15 03:13:53,867 INFO L226 Difference]: Without dead ends: 532 [2020-10-15 03:13:53,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:13:53,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2020-10-15 03:13:53,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 332. [2020-10-15 03:13:53,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-10-15 03:13:53,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 427 transitions. [2020-10-15 03:13:53,938 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 427 transitions. Word has length 53 [2020-10-15 03:13:53,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:13:53,938 INFO L479 AbstractCegarLoop]: Abstraction has 332 states and 427 transitions. [2020-10-15 03:13:53,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:13:53,939 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 427 transitions. [2020-10-15 03:13:53,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-15 03:13:53,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:13:53,940 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] [2020-10-15 03:13:53,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:13:53,940 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:13:53,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:13:53,940 INFO L82 PathProgramCache]: Analyzing trace with hash 340687595, now seen corresponding path program 1 times [2020-10-15 03:13:53,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:13:53,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966787233] [2020-10-15 03:13:53,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:13:53,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:13:53,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:53,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:54,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:54,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:54,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:54,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:55,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:55,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:55,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:55,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:55,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:55,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:56,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:57,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:58,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:13:58,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-15 03:13:58,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:13:58,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:13:58,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:13:58,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:13:58,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:13:58,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:13:58,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 03:13:58,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:13:59,250 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:13:59,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:13:59,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:13:59,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:13:59,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:13:59,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:13:59,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:13:59,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 03:13:59,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:13:59,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:13:59,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:13:59,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:13:59,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:13:59,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:13:59,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:13:59,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966787233] [2020-10-15 03:13:59,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:13:59,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:13:59,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386519500] [2020-10-15 03:13:59,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:13:59,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:13:59,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:13:59,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:13:59,300 INFO L87 Difference]: Start difference. First operand 332 states and 427 transitions. Second operand 9 states. [2020-10-15 03:13:59,674 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-15 03:14:00,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:14:00,466 INFO L93 Difference]: Finished difference Result 578 states and 767 transitions. [2020-10-15 03:14:00,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:14:00,466 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-10-15 03:14:00,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:14:00,468 INFO L225 Difference]: With dead ends: 578 [2020-10-15 03:14:00,468 INFO L226 Difference]: Without dead ends: 325 [2020-10-15 03:14:00,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:14:00,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-10-15 03:14:00,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 323. [2020-10-15 03:14:00,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-10-15 03:14:00,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 418 transitions. [2020-10-15 03:14:00,538 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 418 transitions. Word has length 54 [2020-10-15 03:14:00,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:14:00,539 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 418 transitions. [2020-10-15 03:14:00,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:14:00,539 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 418 transitions. [2020-10-15 03:14:00,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-15 03:14:00,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:14:00,539 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:14:00,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:14:00,540 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:14:00,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:14:00,541 INFO L82 PathProgramCache]: Analyzing trace with hash -805534648, now seen corresponding path program 1 times [2020-10-15 03:14:00,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:14:00,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857257491] [2020-10-15 03:14:00,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:14:00,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:00,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:00,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:01,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:01,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-15 03:14:01,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:14:01,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 477 [2020-10-15 03:14:01,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:01,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:01,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:14:01,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:14:01,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 03:14:01,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:14:01,388 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:14:01,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:14:01,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:01,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:01,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:01,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:14:01,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:14:01,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:14:01,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:01,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:01,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:14:01,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:14:01,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:14:01,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:14:01,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:14:01,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857257491] [2020-10-15 03:14:01,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:14:01,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:14:01,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119334888] [2020-10-15 03:14:01,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:14:01,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:14:01,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:14:01,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:14:01,417 INFO L87 Difference]: Start difference. First operand 323 states and 418 transitions. Second operand 9 states. [2020-10-15 03:14:01,718 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-15 03:14:03,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:14:03,206 INFO L93 Difference]: Finished difference Result 544 states and 738 transitions. [2020-10-15 03:14:03,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:14:03,208 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-10-15 03:14:03,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:14:03,210 INFO L225 Difference]: With dead ends: 544 [2020-10-15 03:14:03,210 INFO L226 Difference]: Without dead ends: 538 [2020-10-15 03:14:03,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:14:03,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2020-10-15 03:14:03,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 317. [2020-10-15 03:14:03,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-10-15 03:14:03,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 411 transitions. [2020-10-15 03:14:03,299 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 411 transitions. Word has length 56 [2020-10-15 03:14:03,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:14:03,299 INFO L479 AbstractCegarLoop]: Abstraction has 317 states and 411 transitions. [2020-10-15 03:14:03,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:14:03,299 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 411 transitions. [2020-10-15 03:14:03,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 03:14:03,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:14:03,300 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:14:03,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:14:03,301 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:14:03,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:14:03,301 INFO L82 PathProgramCache]: Analyzing trace with hash 155017960, now seen corresponding path program 1 times [2020-10-15 03:14:03,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:14:03,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053622998] [2020-10-15 03:14:03,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:14:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:03,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:03,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:03,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:03,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:03,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:03,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:05,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:05,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:05,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:05,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:05,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:08,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:08,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 03:14:08,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:14:08,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 03:14:08,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:08,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:08,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:14:08,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:14:08,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-15 03:14:08,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:14:08,570 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:14:08,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:14:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:08,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:08,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:08,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:14:08,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:14:08,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:14:08,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:08,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:08,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:14:08,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:14:08,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:14:08,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:14:08,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:14:08,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053622998] [2020-10-15 03:14:08,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:14:08,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:14:08,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631075989] [2020-10-15 03:14:08,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:14:08,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:14:08,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:14:08,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:14:08,597 INFO L87 Difference]: Start difference. First operand 317 states and 411 transitions. Second operand 6 states. [2020-10-15 03:14:08,836 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 03:14:09,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:14:09,666 INFO L93 Difference]: Finished difference Result 1283 states and 1851 transitions. [2020-10-15 03:14:09,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:14:09,666 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2020-10-15 03:14:09,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:14:09,673 INFO L225 Difference]: With dead ends: 1283 [2020-10-15 03:14:09,674 INFO L226 Difference]: Without dead ends: 1122 [2020-10-15 03:14:09,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:14:09,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2020-10-15 03:14:09,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 476. [2020-10-15 03:14:09,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-10-15 03:14:09,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 642 transitions. [2020-10-15 03:14:09,819 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 642 transitions. Word has length 73 [2020-10-15 03:14:09,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:14:09,819 INFO L479 AbstractCegarLoop]: Abstraction has 476 states and 642 transitions. [2020-10-15 03:14:09,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:14:09,820 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 642 transitions. [2020-10-15 03:14:09,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 03:14:09,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:14:09,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:14:09,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:14:09,821 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:14:09,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:14:09,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1215580921, now seen corresponding path program 1 times [2020-10-15 03:14:09,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:14:09,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714903800] [2020-10-15 03:14:09,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:14:09,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:09,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:09,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:09,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:09,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:10,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:10,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:10,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:10,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:10,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:11,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:14,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:14,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 03:14:14,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:14:14,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 03:14:14,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:14,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:14,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:14:14,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:14:14,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-15 03:14:14,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:14:15,119 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:14:15,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:14:15,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:15,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:15,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:15,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:14:15,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:14:15,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:14:15,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:15,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:15,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:14:15,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:14:15,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:14:15,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:14:15,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:14:15,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714903800] [2020-10-15 03:14:15,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:14:15,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:14:15,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211139160] [2020-10-15 03:14:15,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:14:15,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:14:15,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:14:15,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:14:15,175 INFO L87 Difference]: Start difference. First operand 476 states and 642 transitions. Second operand 6 states. [2020-10-15 03:14:15,510 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-15 03:14:17,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:14:17,391 INFO L93 Difference]: Finished difference Result 1960 states and 2803 transitions. [2020-10-15 03:14:17,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:14:17,391 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-10-15 03:14:17,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:14:17,397 INFO L225 Difference]: With dead ends: 1960 [2020-10-15 03:14:17,397 INFO L226 Difference]: Without dead ends: 1640 [2020-10-15 03:14:17,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:14:17,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2020-10-15 03:14:17,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1108. [2020-10-15 03:14:17,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1108 states. [2020-10-15 03:14:17,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 1548 transitions. [2020-10-15 03:14:17,860 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 1548 transitions. Word has length 75 [2020-10-15 03:14:17,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:14:17,861 INFO L479 AbstractCegarLoop]: Abstraction has 1108 states and 1548 transitions. [2020-10-15 03:14:17,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:14:17,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 1548 transitions. [2020-10-15 03:14:17,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 03:14:17,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:14:17,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:14:17,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 03:14:17,864 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:14:17,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:14:17,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1799718273, now seen corresponding path program 1 times [2020-10-15 03:14:17,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:14:17,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917696225] [2020-10-15 03:14:17,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:14:17,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:17,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:17,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:17,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:17,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:18,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:18,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:18,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:18,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:19,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:19,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:22,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:22,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 03:14:22,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:14:22,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:14:22,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:22,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:22,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:14:22,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:14:22,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-15 03:14:22,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:14:23,277 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:14:23,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:14:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:23,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:23,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:23,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:14:23,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:14:23,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:14:23,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:23,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:23,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:14:23,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:14:23,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:14:23,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:14:23,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:14:23,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917696225] [2020-10-15 03:14:23,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:14:23,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:14:23,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79694337] [2020-10-15 03:14:23,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:14:23,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:14:23,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:14:23,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:14:23,331 INFO L87 Difference]: Start difference. First operand 1108 states and 1548 transitions. Second operand 8 states. [2020-10-15 03:14:23,585 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-15 03:14:25,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:14:25,874 INFO L93 Difference]: Finished difference Result 5296 states and 7536 transitions. [2020-10-15 03:14:25,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:14:25,876 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 75 [2020-10-15 03:14:25,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:14:25,896 INFO L225 Difference]: With dead ends: 5296 [2020-10-15 03:14:25,896 INFO L226 Difference]: Without dead ends: 4372 [2020-10-15 03:14:25,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:14:25,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4372 states. [2020-10-15 03:14:26,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4372 to 2174. [2020-10-15 03:14:26,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2174 states. [2020-10-15 03:14:26,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2174 states to 2174 states and 3086 transitions. [2020-10-15 03:14:26,748 INFO L78 Accepts]: Start accepts. Automaton has 2174 states and 3086 transitions. Word has length 75 [2020-10-15 03:14:26,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:14:26,748 INFO L479 AbstractCegarLoop]: Abstraction has 2174 states and 3086 transitions. [2020-10-15 03:14:26,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:14:26,748 INFO L276 IsEmpty]: Start isEmpty. Operand 2174 states and 3086 transitions. [2020-10-15 03:14:26,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 03:14:26,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:14:26,751 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:14:26,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 03:14:26,751 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:14:26,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:14:26,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1785327638, now seen corresponding path program 1 times [2020-10-15 03:14:26,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:14:26,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194314787] [2020-10-15 03:14:26,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:14:26,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:26,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:26,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:26,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:27,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:27,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:27,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:29,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:29,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:29,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:31,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:31,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 03:14:31,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:14:31,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 03:14:31,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:31,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:31,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:14:31,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:14:31,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-15 03:14:31,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:14:32,033 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:14:32,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:14:32,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:32,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:32,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:32,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:14:32,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:14:32,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:14:32,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:32,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:32,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:14:32,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:14:32,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:14:32,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:14:32,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:14:32,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [194314787] [2020-10-15 03:14:32,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:14:32,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:14:32,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369566240] [2020-10-15 03:14:32,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:14:32,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:14:32,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:14:32,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:14:32,073 INFO L87 Difference]: Start difference. First operand 2174 states and 3086 transitions. Second operand 6 states. [2020-10-15 03:14:32,364 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-15 03:14:34,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:14:34,370 INFO L93 Difference]: Finished difference Result 6846 states and 9864 transitions. [2020-10-15 03:14:34,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:14:34,371 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-10-15 03:14:34,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:14:34,390 INFO L225 Difference]: With dead ends: 6846 [2020-10-15 03:14:34,390 INFO L226 Difference]: Without dead ends: 4856 [2020-10-15 03:14:34,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:14:34,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2020-10-15 03:14:35,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 2174. [2020-10-15 03:14:35,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2174 states. [2020-10-15 03:14:35,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2174 states to 2174 states and 3062 transitions. [2020-10-15 03:14:35,147 INFO L78 Accepts]: Start accepts. Automaton has 2174 states and 3062 transitions. Word has length 75 [2020-10-15 03:14:35,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:14:35,148 INFO L479 AbstractCegarLoop]: Abstraction has 2174 states and 3062 transitions. [2020-10-15 03:14:35,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:14:35,148 INFO L276 IsEmpty]: Start isEmpty. Operand 2174 states and 3062 transitions. [2020-10-15 03:14:35,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 03:14:35,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:14:35,151 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:14:35,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 03:14:35,152 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:14:35,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:14:35,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1769899337, now seen corresponding path program 1 times [2020-10-15 03:14:35,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:14:35,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823898333] [2020-10-15 03:14:35,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:14:35,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:35,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:35,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:35,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:35,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:35,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:35,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:37,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:37,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:37,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:40,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:40,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 03:14:40,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:14:40,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:14:40,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:40,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:40,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:14:40,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 03:14:40,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-15 03:14:40,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:14:40,421 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:14:40,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:14:40,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:40,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:40,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:40,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:14:40,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:14:40,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:14:40,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:40,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:40,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:14:40,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:14:40,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:14:40,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:14:40,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:14:40,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823898333] [2020-10-15 03:14:40,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:14:40,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:14:40,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434497567] [2020-10-15 03:14:40,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:14:40,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:14:40,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:14:40,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:14:40,454 INFO L87 Difference]: Start difference. First operand 2174 states and 3062 transitions. Second operand 6 states. [2020-10-15 03:14:40,653 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-15 03:14:42,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:14:42,746 INFO L93 Difference]: Finished difference Result 6837 states and 9715 transitions. [2020-10-15 03:14:42,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:14:42,746 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-10-15 03:14:42,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:14:42,772 INFO L225 Difference]: With dead ends: 6837 [2020-10-15 03:14:42,773 INFO L226 Difference]: Without dead ends: 4847 [2020-10-15 03:14:42,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:14:42,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4847 states. [2020-10-15 03:14:44,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4847 to 4843. [2020-10-15 03:14:44,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4843 states. [2020-10-15 03:14:44,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4843 states to 4843 states and 6744 transitions. [2020-10-15 03:14:44,574 INFO L78 Accepts]: Start accepts. Automaton has 4843 states and 6744 transitions. Word has length 75 [2020-10-15 03:14:44,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:14:44,575 INFO L479 AbstractCegarLoop]: Abstraction has 4843 states and 6744 transitions. [2020-10-15 03:14:44,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:14:44,575 INFO L276 IsEmpty]: Start isEmpty. Operand 4843 states and 6744 transitions. [2020-10-15 03:14:44,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 03:14:44,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:14:44,578 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:14:44,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 03:14:44,578 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:14:44,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:14:44,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1763983749, now seen corresponding path program 1 times [2020-10-15 03:14:44,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:14:44,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676409731] [2020-10-15 03:14:44,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:14:44,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:44,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:44,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:44,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:44,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:44,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:45,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:45,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:49,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:49,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:49,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:49,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:49,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 03:14:49,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:14:49,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:14:49,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:49,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:49,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:14:49,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-15 03:14:49,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-15 03:14:49,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:14:49,837 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:14:49,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:14:49,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:49,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:49,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:14:49,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:14:49,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:14:49,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:14:49,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:14:49,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:14:49,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:14:49,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:14:49,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:14:49,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:14:49,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:14:49,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676409731] [2020-10-15 03:14:49,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:14:49,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:14:49,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678403731] [2020-10-15 03:14:49,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:14:49,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:14:49,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:14:49,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:14:49,863 INFO L87 Difference]: Start difference. First operand 4843 states and 6744 transitions. Second operand 6 states. [2020-10-15 03:14:50,099 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-15 03:14:53,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:14:53,534 INFO L93 Difference]: Finished difference Result 13689 states and 19263 transitions. [2020-10-15 03:14:53,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:14:53,536 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-10-15 03:14:53,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:14:53,568 INFO L225 Difference]: With dead ends: 13689 [2020-10-15 03:14:53,569 INFO L226 Difference]: Without dead ends: 9177 [2020-10-15 03:14:53,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:14:53,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9177 states. [2020-10-15 03:14:56,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9177 to 9173. [2020-10-15 03:14:56,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9173 states. [2020-10-15 03:14:56,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9173 states to 9173 states and 12798 transitions. [2020-10-15 03:14:56,665 INFO L78 Accepts]: Start accepts. Automaton has 9173 states and 12798 transitions. Word has length 75 [2020-10-15 03:14:56,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:14:56,666 INFO L479 AbstractCegarLoop]: Abstraction has 9173 states and 12798 transitions. [2020-10-15 03:14:56,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:14:56,666 INFO L276 IsEmpty]: Start isEmpty. Operand 9173 states and 12798 transitions. [2020-10-15 03:14:56,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-15 03:14:56,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:14:56,680 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] [2020-10-15 03:14:56,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 03:14:56,680 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:14:56,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:14:56,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1265303272, now seen corresponding path program 1 times [2020-10-15 03:14:56,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:14:56,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496055299] [2020-10-15 03:14:56,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:14:56,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:14:56,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:56,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:56,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:56,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:56,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:56,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:57,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:57,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:57,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:58,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:59,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:59,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:59,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:14:59,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:00,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:00,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:00,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:01,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:01,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:01,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 03:15:01,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-15 03:15:01,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:15:01,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:01,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:01,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:15:01,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:15:01,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-15 03:15:01,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:15:01,994 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:15:01,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:15:01,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:02,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:02,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:02,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:15:02,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:15:02,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:15:02,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:02,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:02,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:15:02,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:15:02,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:15:02,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:15:02,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:15:02,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1496055299] [2020-10-15 03:15:02,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:15:02,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:15:02,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14069400] [2020-10-15 03:15:02,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:15:02,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:15:02,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:15:02,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:15:02,022 INFO L87 Difference]: Start difference. First operand 9173 states and 12798 transitions. Second operand 8 states. [2020-10-15 03:15:02,424 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-15 03:15:08,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:15:08,146 INFO L93 Difference]: Finished difference Result 15366 states and 21400 transitions. [2020-10-15 03:15:08,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 03:15:08,147 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 76 [2020-10-15 03:15:08,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:15:08,175 INFO L225 Difference]: With dead ends: 15366 [2020-10-15 03:15:08,176 INFO L226 Difference]: Without dead ends: 13169 [2020-10-15 03:15:08,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-10-15 03:15:08,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13169 states. [2020-10-15 03:15:11,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13169 to 10177. [2020-10-15 03:15:11,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10177 states. [2020-10-15 03:15:11,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10177 states to 10177 states and 14158 transitions. [2020-10-15 03:15:11,676 INFO L78 Accepts]: Start accepts. Automaton has 10177 states and 14158 transitions. Word has length 76 [2020-10-15 03:15:11,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:15:11,676 INFO L479 AbstractCegarLoop]: Abstraction has 10177 states and 14158 transitions. [2020-10-15 03:15:11,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:15:11,676 INFO L276 IsEmpty]: Start isEmpty. Operand 10177 states and 14158 transitions. [2020-10-15 03:15:11,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-15 03:15:11,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:15:11,679 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] [2020-10-15 03:15:11,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 03:15:11,679 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:15:11,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:15:11,680 INFO L82 PathProgramCache]: Analyzing trace with hash 430250462, now seen corresponding path program 1 times [2020-10-15 03:15:11,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:15:11,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696488512] [2020-10-15 03:15:11,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:15:11,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:11,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:11,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:11,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:11,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:12,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:12,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:14,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:16,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:16,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 03:15:16,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:15:16,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 03:15:16,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:16,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:16,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:15:16,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:15:16,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 03:15:16,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:15:16,964 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:15:16,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:15:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:16,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:16,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:16,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:15:16,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:15:16,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:15:16,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:16,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:16,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:15:16,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:15:16,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:15:16,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:15:16,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:15:16,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696488512] [2020-10-15 03:15:16,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:15:16,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:15:16,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825887941] [2020-10-15 03:15:16,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:15:16,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:15:16,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:15:16,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:15:16,995 INFO L87 Difference]: Start difference. First operand 10177 states and 14158 transitions. Second operand 6 states. [2020-10-15 03:15:17,211 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 03:15:20,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:15:20,596 INFO L93 Difference]: Finished difference Result 18348 states and 25611 transitions. [2020-10-15 03:15:20,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:15:20,597 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-10-15 03:15:20,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:15:20,624 INFO L225 Difference]: With dead ends: 18348 [2020-10-15 03:15:20,624 INFO L226 Difference]: Without dead ends: 8336 [2020-10-15 03:15:20,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:15:20,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8336 states. [2020-10-15 03:15:23,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8336 to 8230. [2020-10-15 03:15:23,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8230 states. [2020-10-15 03:15:23,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8230 states to 8230 states and 11408 transitions. [2020-10-15 03:15:23,593 INFO L78 Accepts]: Start accepts. Automaton has 8230 states and 11408 transitions. Word has length 76 [2020-10-15 03:15:23,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:15:23,593 INFO L479 AbstractCegarLoop]: Abstraction has 8230 states and 11408 transitions. [2020-10-15 03:15:23,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:15:23,594 INFO L276 IsEmpty]: Start isEmpty. Operand 8230 states and 11408 transitions. [2020-10-15 03:15:23,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-15 03:15:23,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:15:23,596 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] [2020-10-15 03:15:23,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 03:15:23,596 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:15:23,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:15:23,597 INFO L82 PathProgramCache]: Analyzing trace with hash 28249117, now seen corresponding path program 1 times [2020-10-15 03:15:23,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:15:23,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1286628837] [2020-10-15 03:15:23,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:15:23,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:23,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:23,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:23,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:23,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:23,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:24,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:24,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:24,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:24,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:25,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:28,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:28,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-15 03:15:28,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:15:28,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:15:28,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:28,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:28,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:15:28,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:15:28,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 03:15:28,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:15:28,989 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:15:28,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:15:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:28,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:29,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:29,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:15:29,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:15:29,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:15:29,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:29,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:29,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:15:29,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:15:29,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:15:29,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:15:29,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:15:29,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1286628837] [2020-10-15 03:15:29,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:15:29,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:15:29,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379333606] [2020-10-15 03:15:29,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:15:29,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:15:29,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:15:29,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:15:29,014 INFO L87 Difference]: Start difference. First operand 8230 states and 11408 transitions. Second operand 8 states. [2020-10-15 03:15:29,331 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 03:15:33,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:15:33,109 INFO L93 Difference]: Finished difference Result 16309 states and 22640 transitions. [2020-10-15 03:15:33,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:15:33,111 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 77 [2020-10-15 03:15:33,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:15:33,131 INFO L225 Difference]: With dead ends: 16309 [2020-10-15 03:15:33,132 INFO L226 Difference]: Without dead ends: 8230 [2020-10-15 03:15:33,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-15 03:15:33,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8230 states. [2020-10-15 03:15:36,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8230 to 8230. [2020-10-15 03:15:36,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8230 states. [2020-10-15 03:15:36,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8230 states to 8230 states and 11404 transitions. [2020-10-15 03:15:36,613 INFO L78 Accepts]: Start accepts. Automaton has 8230 states and 11404 transitions. Word has length 77 [2020-10-15 03:15:36,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:15:36,613 INFO L479 AbstractCegarLoop]: Abstraction has 8230 states and 11404 transitions. [2020-10-15 03:15:36,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:15:36,613 INFO L276 IsEmpty]: Start isEmpty. Operand 8230 states and 11404 transitions. [2020-10-15 03:15:36,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-15 03:15:36,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:15:36,630 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] [2020-10-15 03:15:36,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-15 03:15:36,631 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:15:36,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:15:36,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1752026006, now seen corresponding path program 1 times [2020-10-15 03:15:36,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:15:36,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237898799] [2020-10-15 03:15:36,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:15:36,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:36,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:36,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:36,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:36,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:37,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:39,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:39,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-15 03:15:39,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:15:39,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2724 [2020-10-15 03:15:39,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:39,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:39,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:15:39,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:15:39,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 03:15:39,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:15:39,730 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:15:39,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:15:39,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:39,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:39,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:39,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:15:39,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:15:39,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 03:15:39,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:39,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:39,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:15:39,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:15:39,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:15:39,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:15:39,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:15:39,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237898799] [2020-10-15 03:15:39,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:15:39,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:15:39,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457373271] [2020-10-15 03:15:39,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:15:39,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:15:39,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:15:39,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:15:39,786 INFO L87 Difference]: Start difference. First operand 8230 states and 11404 transitions. Second operand 6 states. [2020-10-15 03:15:40,079 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 03:15:42,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:15:42,513 INFO L93 Difference]: Finished difference Result 14171 states and 19694 transitions. [2020-10-15 03:15:42,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:15:42,514 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-10-15 03:15:42,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:15:42,522 INFO L225 Difference]: With dead ends: 14171 [2020-10-15 03:15:42,522 INFO L226 Difference]: Without dead ends: 6113 [2020-10-15 03:15:42,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:15:42,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6113 states. [2020-10-15 03:15:44,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6113 to 4104. [2020-10-15 03:15:44,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4104 states. [2020-10-15 03:15:44,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4104 states to 4104 states and 5650 transitions. [2020-10-15 03:15:44,191 INFO L78 Accepts]: Start accepts. Automaton has 4104 states and 5650 transitions. Word has length 79 [2020-10-15 03:15:44,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:15:44,191 INFO L479 AbstractCegarLoop]: Abstraction has 4104 states and 5650 transitions. [2020-10-15 03:15:44,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:15:44,191 INFO L276 IsEmpty]: Start isEmpty. Operand 4104 states and 5650 transitions. [2020-10-15 03:15:44,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-15 03:15:44,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:15:44,192 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] [2020-10-15 03:15:44,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-15 03:15:44,193 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:15:44,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:15:44,193 INFO L82 PathProgramCache]: Analyzing trace with hash 104322071, now seen corresponding path program 1 times [2020-10-15 03:15:44,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:15:44,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143763842] [2020-10-15 03:15:44,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:15:44,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:44,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:44,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:44,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:44,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:44,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:44,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:46,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:46,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:49,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:49,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-15 03:15:49,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:15:49,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:15:49,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:49,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:49,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:15:49,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:15:49,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 03:15:49,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:15:49,586 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:15:49,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:15:49,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:49,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:49,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:49,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:15:49,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:15:49,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:15:49,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:49,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:49,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:15:49,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:15:49,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:15:49,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:15:49,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:15:49,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143763842] [2020-10-15 03:15:49,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:15:49,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:15:49,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071297195] [2020-10-15 03:15:49,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:15:49,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:15:49,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:15:49,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:15:49,625 INFO L87 Difference]: Start difference. First operand 4104 states and 5650 transitions. Second operand 8 states. [2020-10-15 03:15:49,925 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 03:15:53,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:15:53,962 INFO L93 Difference]: Finished difference Result 12141 states and 16759 transitions. [2020-10-15 03:15:53,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:15:53,963 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-10-15 03:15:53,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:15:53,979 INFO L225 Difference]: With dead ends: 12141 [2020-10-15 03:15:53,979 INFO L226 Difference]: Without dead ends: 8152 [2020-10-15 03:15:53,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:15:53,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8152 states. [2020-10-15 03:15:55,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8152 to 4104. [2020-10-15 03:15:55,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4104 states. [2020-10-15 03:15:55,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4104 states to 4104 states and 5648 transitions. [2020-10-15 03:15:55,701 INFO L78 Accepts]: Start accepts. Automaton has 4104 states and 5648 transitions. Word has length 80 [2020-10-15 03:15:55,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:15:55,701 INFO L479 AbstractCegarLoop]: Abstraction has 4104 states and 5648 transitions. [2020-10-15 03:15:55,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:15:55,702 INFO L276 IsEmpty]: Start isEmpty. Operand 4104 states and 5648 transitions. [2020-10-15 03:15:55,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-15 03:15:55,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:15:55,703 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] [2020-10-15 03:15:55,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 03:15:55,703 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:15:55,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:15:55,704 INFO L82 PathProgramCache]: Analyzing trace with hash -477539802, now seen corresponding path program 1 times [2020-10-15 03:15:55,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:15:55,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807356221] [2020-10-15 03:15:55,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:15:55,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:55,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:55,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:55,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:56,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:57,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:59,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:00,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:00,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-15 03:16:00,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:16:00,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 03:16:00,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:00,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:00,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 03:16:00,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:16:00,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-15 03:16:00,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:01,151 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-10-15 03:16:01,685 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:16:01,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:01,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:01,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:01,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:01,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:01,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:01,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:16:01,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:01,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:01,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:16:01,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:01,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:16:01,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:16:01,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:16:01,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807356221] [2020-10-15 03:16:01,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:01,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-15 03:16:01,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482108822] [2020-10-15 03:16:01,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 03:16:01,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:01,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 03:16:01,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-10-15 03:16:01,774 INFO L87 Difference]: Start difference. First operand 4104 states and 5648 transitions. Second operand 15 states. [2020-10-15 03:16:01,957 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-10-15 03:16:02,867 WARN L193 SmtUtils]: Spent 819.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 197 [2020-10-15 03:16:08,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:08,409 INFO L93 Difference]: Finished difference Result 12730 states and 17566 transitions. [2020-10-15 03:16:08,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 03:16:08,410 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 82 [2020-10-15 03:16:08,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:08,422 INFO L225 Difference]: With dead ends: 12730 [2020-10-15 03:16:08,422 INFO L226 Difference]: Without dead ends: 10903 [2020-10-15 03:16:08,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2020-10-15 03:16:08,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10903 states. [2020-10-15 03:16:09,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10903 to 4109. [2020-10-15 03:16:09,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4109 states. [2020-10-15 03:16:09,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 5653 transitions. [2020-10-15 03:16:09,863 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 5653 transitions. Word has length 82 [2020-10-15 03:16:09,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:09,863 INFO L479 AbstractCegarLoop]: Abstraction has 4109 states and 5653 transitions. [2020-10-15 03:16:09,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 03:16:09,864 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 5653 transitions. [2020-10-15 03:16:09,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-15 03:16:09,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:09,865 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] [2020-10-15 03:16:09,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 03:16:09,865 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:09,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:09,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1829265455, now seen corresponding path program 1 times [2020-10-15 03:16:09,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:09,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1961196206] [2020-10-15 03:16:09,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:09,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:09,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:09,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:09,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:10,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:10,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:10,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-15 03:16:10,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:16:10,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1092 [2020-10-15 03:16:10,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:10,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:10,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:16:10,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-15 03:16:10,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 03:16:10,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:11,193 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:16:11,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:11,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:11,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:11,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:11,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:11,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:11,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:16:11,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:11,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:11,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:16:11,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:11,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:16:11,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:11,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:16:11,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1961196206] [2020-10-15 03:16:11,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:11,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:16:11,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473283894] [2020-10-15 03:16:11,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:16:11,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:11,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:16:11,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:16:11,219 INFO L87 Difference]: Start difference. First operand 4109 states and 5653 transitions. Second operand 4 states. [2020-10-15 03:16:11,447 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-15 03:16:14,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:14,820 INFO L93 Difference]: Finished difference Result 11633 states and 15975 transitions. [2020-10-15 03:16:14,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:16:14,821 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-10-15 03:16:14,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:14,833 INFO L225 Difference]: With dead ends: 11633 [2020-10-15 03:16:14,833 INFO L226 Difference]: Without dead ends: 7679 [2020-10-15 03:16:14,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:16:14,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7679 states. [2020-10-15 03:16:17,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7679 to 5927. [2020-10-15 03:16:17,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5927 states. [2020-10-15 03:16:17,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5927 states to 5927 states and 8051 transitions. [2020-10-15 03:16:17,274 INFO L78 Accepts]: Start accepts. Automaton has 5927 states and 8051 transitions. Word has length 83 [2020-10-15 03:16:17,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:17,275 INFO L479 AbstractCegarLoop]: Abstraction has 5927 states and 8051 transitions. [2020-10-15 03:16:17,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:16:17,275 INFO L276 IsEmpty]: Start isEmpty. Operand 5927 states and 8051 transitions. [2020-10-15 03:16:17,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-15 03:16:17,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:17,276 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] [2020-10-15 03:16:17,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-15 03:16:17,277 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:17,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:17,277 INFO L82 PathProgramCache]: Analyzing trace with hash -607711718, now seen corresponding path program 1 times [2020-10-15 03:16:17,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:17,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457071628] [2020-10-15 03:16:17,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:17,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:17,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:17,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:17,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:17,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:17,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-15 03:16:17,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:16:17,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 530 [2020-10-15 03:16:17,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:17,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:17,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:16:17,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-15 03:16:17,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 03:16:17,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:18,069 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:16:18,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:18,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:18,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:18,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:18,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:18,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:18,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:16:18,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:18,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:18,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:16:18,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:18,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:16:18,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:18,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:16:18,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457071628] [2020-10-15 03:16:18,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:18,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:16:18,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686933531] [2020-10-15 03:16:18,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:16:18,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:18,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:16:18,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:16:18,096 INFO L87 Difference]: Start difference. First operand 5927 states and 8051 transitions. Second operand 4 states. [2020-10-15 03:16:18,298 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-15 03:16:21,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:21,902 INFO L93 Difference]: Finished difference Result 13867 states and 18637 transitions. [2020-10-15 03:16:21,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:16:21,903 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2020-10-15 03:16:21,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:21,916 INFO L225 Difference]: With dead ends: 13867 [2020-10-15 03:16:21,916 INFO L226 Difference]: Without dead ends: 8041 [2020-10-15 03:16:21,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:16:21,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8041 states. [2020-10-15 03:16:25,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8041 to 7591. [2020-10-15 03:16:25,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7591 states. [2020-10-15 03:16:25,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7591 states to 7591 states and 10051 transitions. [2020-10-15 03:16:25,040 INFO L78 Accepts]: Start accepts. Automaton has 7591 states and 10051 transitions. Word has length 84 [2020-10-15 03:16:25,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:25,040 INFO L479 AbstractCegarLoop]: Abstraction has 7591 states and 10051 transitions. [2020-10-15 03:16:25,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:16:25,040 INFO L276 IsEmpty]: Start isEmpty. Operand 7591 states and 10051 transitions. [2020-10-15 03:16:25,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-15 03:16:25,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:25,041 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] [2020-10-15 03:16:25,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-15 03:16:25,041 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:25,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:25,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1983906373, now seen corresponding path program 1 times [2020-10-15 03:16:25,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:25,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465851139] [2020-10-15 03:16:25,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:25,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:25,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:25,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:25,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:25,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:25,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:25,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:25,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:28,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:30,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:30,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 03:16:30,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:16:30,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 03:16:30,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:30,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:30,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:16:30,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:16:30,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-15 03:16:30,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:30,312 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:16:30,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:30,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:30,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:30,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:30,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:30,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 03:16:30,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:30,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:30,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:16:30,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:30,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:16:30,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:30,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:16:30,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465851139] [2020-10-15 03:16:30,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:30,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:16:30,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910609585] [2020-10-15 03:16:30,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:16:30,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:30,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:16:30,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:16:30,356 INFO L87 Difference]: Start difference. First operand 7591 states and 10051 transitions. Second operand 6 states. [2020-10-15 03:16:30,660 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-15 03:16:34,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:34,293 INFO L93 Difference]: Finished difference Result 11307 states and 15025 transitions. [2020-10-15 03:16:34,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:16:34,294 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-10-15 03:16:34,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:34,305 INFO L225 Difference]: With dead ends: 11307 [2020-10-15 03:16:34,305 INFO L226 Difference]: Without dead ends: 7529 [2020-10-15 03:16:34,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:16:34,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7529 states. [2020-10-15 03:16:36,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7529 to 3801. [2020-10-15 03:16:36,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3801 states. [2020-10-15 03:16:36,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3801 states to 3801 states and 5001 transitions. [2020-10-15 03:16:36,154 INFO L78 Accepts]: Start accepts. Automaton has 3801 states and 5001 transitions. Word has length 85 [2020-10-15 03:16:36,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:36,154 INFO L479 AbstractCegarLoop]: Abstraction has 3801 states and 5001 transitions. [2020-10-15 03:16:36,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:16:36,154 INFO L276 IsEmpty]: Start isEmpty. Operand 3801 states and 5001 transitions. [2020-10-15 03:16:36,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-15 03:16:36,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:36,155 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] [2020-10-15 03:16:36,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-15 03:16:36,155 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:36,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:36,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1212042720, now seen corresponding path program 1 times [2020-10-15 03:16:36,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:36,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583878898] [2020-10-15 03:16:36,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:36,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:36,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:36,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:36,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:36,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 03:16:36,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:16:36,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-15 03:16:36,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:36,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:36,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:16:36,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-15 03:16:36,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 03:16:36,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:16:36,662 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:16:36,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:36,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:36,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:36,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:36,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:36,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:36,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:16:36,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:36,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:36,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:16:36,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:36,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:16:36,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:36,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:16:36,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583878898] [2020-10-15 03:16:36,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:36,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:16:36,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701398866] [2020-10-15 03:16:36,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:16:36,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:36,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:16:36,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:16:36,690 INFO L87 Difference]: Start difference. First operand 3801 states and 5001 transitions. Second operand 4 states. [2020-10-15 03:16:36,887 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-15 03:16:39,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:39,516 INFO L93 Difference]: Finished difference Result 7024 states and 9290 transitions. [2020-10-15 03:16:39,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:16:39,523 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-10-15 03:16:39,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:39,532 INFO L225 Difference]: With dead ends: 7024 [2020-10-15 03:16:39,532 INFO L226 Difference]: Without dead ends: 4496 [2020-10-15 03:16:39,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:16:39,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4496 states. [2020-10-15 03:16:41,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4496 to 4375. [2020-10-15 03:16:41,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4375 states. [2020-10-15 03:16:41,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4375 states to 4375 states and 5731 transitions. [2020-10-15 03:16:41,788 INFO L78 Accepts]: Start accepts. Automaton has 4375 states and 5731 transitions. Word has length 85 [2020-10-15 03:16:41,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:41,789 INFO L479 AbstractCegarLoop]: Abstraction has 4375 states and 5731 transitions. [2020-10-15 03:16:41,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:16:41,789 INFO L276 IsEmpty]: Start isEmpty. Operand 4375 states and 5731 transitions. [2020-10-15 03:16:41,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-15 03:16:41,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:41,790 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] [2020-10-15 03:16:41,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-15 03:16:41,790 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:41,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:41,790 INFO L82 PathProgramCache]: Analyzing trace with hash 185807841, now seen corresponding path program 1 times [2020-10-15 03:16:41,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:41,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232827075] [2020-10-15 03:16:41,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:41,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:41,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:41,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:41,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:41,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:42,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:42,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:44,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:44,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-15 03:16:44,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:16:44,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2453 [2020-10-15 03:16:44,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:44,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:44,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:16:44,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:16:44,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-15 03:16:44,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:44,545 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-15 03:16:44,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:44,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:44,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:44,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:44,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:44,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:44,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:16:44,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:44,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:44,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:16:44,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:44,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:16:44,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:44,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:16:44,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232827075] [2020-10-15 03:16:44,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:44,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:16:44,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471042314] [2020-10-15 03:16:44,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:16:44,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:44,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:16:44,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:16:44,595 INFO L87 Difference]: Start difference. First operand 4375 states and 5731 transitions. Second operand 8 states. [2020-10-15 03:16:44,851 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 160