/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.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:15:20,684 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:15:20,687 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:15:20,734 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:15:20,734 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:15:20,742 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:15:20,744 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:15:20,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:15:20,750 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:15:20,753 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:15:20,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:15:20,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:15:20,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:15:20,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:15:20,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:15:20,761 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:15:20,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:15:20,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:15:20,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:15:20,776 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:15:20,779 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:15:20,780 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:15:20,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:15:20,781 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:15:20,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:15:20,794 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:15:20,794 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:15:20,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:15:20,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:15:20,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:15:20,802 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:15:20,803 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:15:20,805 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:15:20,806 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:15:20,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:15:20,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:15:20,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:15:20,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:15:20,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:15:20,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:15:20,812 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:15:20,813 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 03:15:20,855 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:15:20,856 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:15:20,857 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:15:20,857 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:15:20,857 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:15:20,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:15:20,858 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:15:20,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:15:20,858 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:15:20,858 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:15:20,859 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:15:20,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:15:20,859 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:15:20,859 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:15:20,859 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:15:20,860 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:15:20,860 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:15:20,860 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:15:20,860 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:15:20,861 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:15:20,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:15:20,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:15:20,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:15:20,861 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:15:20,862 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:15:20,862 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:15:20,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:15:20,862 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:15:20,862 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:15:20,863 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 03:15:21,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:15:21,234 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:15:21,238 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:15:21,239 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:15:21,239 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:15:21,240 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-15 03:15:21,305 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a03435065/8f58a17c809f4ff8a1949f1c13bb99de/FLAGc6b66d5b0 [2020-10-15 03:15:21,876 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:15:21,880 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-15 03:15:21,893 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a03435065/8f58a17c809f4ff8a1949f1c13bb99de/FLAGc6b66d5b0 [2020-10-15 03:15:22,157 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a03435065/8f58a17c809f4ff8a1949f1c13bb99de [2020-10-15 03:15:22,166 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:15:22,168 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:15:22,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:15:22,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:15:22,177 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:15:22,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:15:22" (1/1) ... [2020-10-15 03:15:22,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54a05326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:15:22, skipping insertion in model container [2020-10-15 03:15:22,182 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:15:22" (1/1) ... [2020-10-15 03:15:22,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:15:22,267 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:15:22,675 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:15:22,687 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:15:22,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:15:22,936 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:15:22,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:15:22 WrapperNode [2020-10-15 03:15:22,939 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:15:22,940 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:15:22,940 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:15:22,940 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:15:22,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:15:22" (1/1) ... [2020-10-15 03:15:22,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:15:22" (1/1) ... [2020-10-15 03:15:22,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:15:22" (1/1) ... [2020-10-15 03:15:22,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:15:22" (1/1) ... [2020-10-15 03:15:23,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:15:22" (1/1) ... [2020-10-15 03:15:23,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:15:22" (1/1) ... [2020-10-15 03:15:23,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:15:22" (1/1) ... [2020-10-15 03:15:23,028 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:15:23,029 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:15:23,029 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:15:23,029 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:15:23,030 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:15:22" (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 03:15:23,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:15:23,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:15:23,114 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:15:23,114 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:15:23,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:15:23,115 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:15:23,115 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:15:23,115 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:15:23,116 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:15:23,116 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:15:23,116 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:15:23,116 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:15:23,116 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:15:23,117 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:15:23,117 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:15:23,117 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:15:23,117 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:15:23,117 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:15:23,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:15:23,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:15:23,984 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:15:23,984 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:15:23,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:15:23 BoogieIcfgContainer [2020-10-15 03:15:23,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:15:23,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:15:23,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:15:23,995 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:15:23,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:15:22" (1/3) ... [2020-10-15 03:15:23,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ca6daf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:15:23, skipping insertion in model container [2020-10-15 03:15:23,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:15:22" (2/3) ... [2020-10-15 03:15:23,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ca6daf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:15:23, skipping insertion in model container [2020-10-15 03:15:23,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:15:23" (3/3) ... [2020-10-15 03:15:24,000 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-15 03:15:24,012 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:15:24,021 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-15 03:15:24,038 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-15 03:15:24,068 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:15:24,068 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:15:24,068 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:15:24,069 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:15:24,069 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:15:24,069 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:15:24,069 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:15:24,069 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:15:24,095 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states. [2020-10-15 03:15:24,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 03:15:24,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:15:24,105 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 03:15:24,106 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:15:24,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:15:24,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1391070789, now seen corresponding path program 1 times [2020-10-15 03:15:24,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:15:24,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880125691] [2020-10-15 03:15:24,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:15:24,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:24,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:24,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:24,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:24,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:25,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:25,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:29,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:29,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:29,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:29,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:29,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 03:15:29,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:15:29,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 03:15:29,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:29,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:29,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:15:29,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:15:29,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 03:15:29,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 03:15:29,769 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-15 03:15:29,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:15:29,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:29,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:29,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:29,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:15:29,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:15:29,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:15:29,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:29,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:29,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:15:29,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:15:29,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:15:29,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:15:29,835 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 03:15:29,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880125691] [2020-10-15 03:15:29,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:15:29,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:15:29,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67412936] [2020-10-15 03:15:29,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:15:29,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:15:29,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:15:29,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:15:29,878 INFO L87 Difference]: Start difference. First operand 111 states. Second operand 6 states. [2020-10-15 03:15:30,183 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-15 03:15:31,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:15:31,350 INFO L93 Difference]: Finished difference Result 427 states and 674 transitions. [2020-10-15 03:15:31,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:15:31,353 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-15 03:15:31,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:15:31,375 INFO L225 Difference]: With dead ends: 427 [2020-10-15 03:15:31,376 INFO L226 Difference]: Without dead ends: 357 [2020-10-15 03:15:31,380 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 03:15:31,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-10-15 03:15:31,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 159. [2020-10-15 03:15:31,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-15 03:15:31,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 223 transitions. [2020-10-15 03:15:31,457 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 223 transitions. Word has length 52 [2020-10-15 03:15:31,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:15:31,458 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 223 transitions. [2020-10-15 03:15:31,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:15:31,459 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 223 transitions. [2020-10-15 03:15:31,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-15 03:15:31,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:15:31,462 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 03:15:31,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:15:31,462 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:15:31,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:15:31,463 INFO L82 PathProgramCache]: Analyzing trace with hash -341683458, now seen corresponding path program 1 times [2020-10-15 03:15:31,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:15:31,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773679994] [2020-10-15 03:15:31,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:15:31,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:31,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:31,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:31,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:31,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:32,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:32,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:34,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:34,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:36,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:36,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-15 03:15:36,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:15:36,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 03:15:36,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:36,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:36,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:15:36,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:15:36,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 03:15:36,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-15 03:15:36,769 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-15 03:15:36,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:15:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:36,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:36,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:36,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:15:36,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:15:36,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:15:36,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:36,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:36,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:15:36,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:15:36,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:15:36,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:15:36,804 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 03:15:36,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773679994] [2020-10-15 03:15:36,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:15:36,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:15:36,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559051283] [2020-10-15 03:15:36,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:15:36,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:15:36,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:15:36,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:15:36,809 INFO L87 Difference]: Start difference. First operand 159 states and 223 transitions. Second operand 6 states. [2020-10-15 03:15:37,061 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-15 03:15:37,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:15:37,903 INFO L93 Difference]: Finished difference Result 439 states and 640 transitions. [2020-10-15 03:15:37,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:15:37,904 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-10-15 03:15:37,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:15:37,908 INFO L225 Difference]: With dead ends: 439 [2020-10-15 03:15:37,909 INFO L226 Difference]: Without dead ends: 354 [2020-10-15 03:15:37,911 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 03:15:37,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-10-15 03:15:37,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 161. [2020-10-15 03:15:37,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-15 03:15:37,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 224 transitions. [2020-10-15 03:15:37,932 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 224 transitions. Word has length 53 [2020-10-15 03:15:37,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:15:37,933 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 224 transitions. [2020-10-15 03:15:37,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:15:37,933 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 224 transitions. [2020-10-15 03:15:37,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-15 03:15:37,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:15:37,935 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 03:15:37,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:15:37,936 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:15:37,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:15:37,936 INFO L82 PathProgramCache]: Analyzing trace with hash 235985469, now seen corresponding path program 1 times [2020-10-15 03:15:37,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:15:37,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191252724] [2020-10-15 03:15:37,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:15:37,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:37,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:38,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:38,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:38,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:38,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:38,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:38,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:39,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:39,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:39,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:42,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:42,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-15 03:15:42,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:15:42,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 03:15:42,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:42,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:42,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:15:42,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:15:42,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-15 03:15:42,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:15:43,417 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-15 03:15:43,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:15:43,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:43,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:43,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:43,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:15:43,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:15:43,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-15 03:15:43,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:43,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:43,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:15:43,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:15:43,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:15:43,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 03:15:43,577 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 03:15:43,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191252724] [2020-10-15 03:15:43,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:15:43,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:15:43,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458962024] [2020-10-15 03:15:43,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:15:43,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:15:43,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:15:43,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:15:43,593 INFO L87 Difference]: Start difference. First operand 161 states and 224 transitions. Second operand 9 states. [2020-10-15 03:15:44,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:15:44,814 INFO L93 Difference]: Finished difference Result 811 states and 1193 transitions. [2020-10-15 03:15:44,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 03:15:44,815 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-10-15 03:15:44,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:15:44,820 INFO L225 Difference]: With dead ends: 811 [2020-10-15 03:15:44,820 INFO L226 Difference]: Without dead ends: 712 [2020-10-15 03:15:44,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-10-15 03:15:44,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2020-10-15 03:15:44,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 192. [2020-10-15 03:15:44,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-15 03:15:44,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 263 transitions. [2020-10-15 03:15:44,849 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 263 transitions. Word has length 54 [2020-10-15 03:15:44,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:15:44,850 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 263 transitions. [2020-10-15 03:15:44,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:15:44,850 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 263 transitions. [2020-10-15 03:15:44,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-15 03:15:44,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:15:44,852 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 03:15:44,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:15:44,853 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:15:44,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:15:44,853 INFO L82 PathProgramCache]: Analyzing trace with hash -613112604, now seen corresponding path program 1 times [2020-10-15 03:15:44,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:15:44,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178702444] [2020-10-15 03:15:44,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:15:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:44,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:44,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:44,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:44,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:45,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:45,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:45,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:45,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:45,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:46,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:46,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:46,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:46,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:46,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:46,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:46,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:47,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:49,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:49,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-15 03:15:49,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-15 03:15:49,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 03:15:49,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:49,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:49,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:15:49,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:15:49,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 03:15:49,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:15:50,264 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-15 03:15:50,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:15:50,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:50,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:50,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:50,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:15:50,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:15:50,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:15:50,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:50,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:50,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:15:50,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:15:50,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:15:50,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:15:50,309 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 03:15:50,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178702444] [2020-10-15 03:15:50,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:15:50,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:15:50,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945519308] [2020-10-15 03:15:50,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:15:50,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:15:50,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:15:50,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:15:50,313 INFO L87 Difference]: Start difference. First operand 192 states and 263 transitions. Second operand 9 states. [2020-10-15 03:15:50,495 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-15 03:15:52,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:15:52,106 INFO L93 Difference]: Finished difference Result 1808 states and 2640 transitions. [2020-10-15 03:15:52,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 03:15:52,107 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-10-15 03:15:52,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:15:52,120 INFO L225 Difference]: With dead ends: 1808 [2020-10-15 03:15:52,121 INFO L226 Difference]: Without dead ends: 1689 [2020-10-15 03:15:52,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=198, Invalid=672, Unknown=0, NotChecked=0, Total=870 [2020-10-15 03:15:52,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2020-10-15 03:15:52,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 238. [2020-10-15 03:15:52,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-10-15 03:15:52,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 316 transitions. [2020-10-15 03:15:52,178 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 316 transitions. Word has length 54 [2020-10-15 03:15:52,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:15:52,180 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 316 transitions. [2020-10-15 03:15:52,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:15:52,181 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 316 transitions. [2020-10-15 03:15:52,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-15 03:15:52,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:15:52,190 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 03:15:52,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:15:52,191 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:15:52,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:15:52,191 INFO L82 PathProgramCache]: Analyzing trace with hash -328545113, now seen corresponding path program 1 times [2020-10-15 03:15:52,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:15:52,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766832246] [2020-10-15 03:15:52,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:15:52,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:52,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:52,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:52,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:52,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:52,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:52,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:52,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:52,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:54,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:54,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:54,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:55,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:55,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:55,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:55,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:56,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:57,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:57,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-15 03:15:57,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-15 03:15:57,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:15:57,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:57,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:57,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:15:57,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:15:57,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 03:15:57,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:15:57,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:15:57,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:57,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:57,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:57,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:15:57,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:15:57,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:15:57,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:57,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:57,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:15:57,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:15:57,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:15:57,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:15:57,457 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 03:15:57,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766832246] [2020-10-15 03:15:57,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:15:57,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:15:57,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229125888] [2020-10-15 03:15:57,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:15:57,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:15:57,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:15:57,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:15:57,461 INFO L87 Difference]: Start difference. First operand 238 states and 316 transitions. Second operand 8 states. [2020-10-15 03:15:57,595 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-15 03:15:58,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:15:58,573 INFO L93 Difference]: Finished difference Result 913 states and 1270 transitions. [2020-10-15 03:15:58,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 03:15:58,574 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-10-15 03:15:58,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:15:58,585 INFO L225 Difference]: With dead ends: 913 [2020-10-15 03:15:58,585 INFO L226 Difference]: Without dead ends: 762 [2020-10-15 03:15:58,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2020-10-15 03:15:58,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2020-10-15 03:15:58,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 274. [2020-10-15 03:15:58,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-15 03:15:58,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 350 transitions. [2020-10-15 03:15:58,639 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 350 transitions. Word has length 54 [2020-10-15 03:15:58,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:15:58,640 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 350 transitions. [2020-10-15 03:15:58,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:15:58,640 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 350 transitions. [2020-10-15 03:15:58,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-15 03:15:58,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:15:58,643 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] [2020-10-15 03:15:58,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:15:58,643 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:15:58,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:15:58,644 INFO L82 PathProgramCache]: Analyzing trace with hash 659319444, now seen corresponding path program 1 times [2020-10-15 03:15:58,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:15:58,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611052075] [2020-10-15 03:15:58,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:15:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:58,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:58,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:58,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:58,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:59,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:59,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:59,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:59,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:59,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:00,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:00,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:03,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:03,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-15 03:16:03,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:16:03,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:16:03,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:03,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:03,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:16:03,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:16:03,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 03:16:03,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:16:03,824 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-15 03:16:03,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:03,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:03,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:03,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:03,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:03,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:03,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:16:03,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:03,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:03,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:16:03,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:03,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:16:03,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:03,857 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 03:16:03,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611052075] [2020-10-15 03:16:03,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:03,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:16:03,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871288886] [2020-10-15 03:16:03,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:16:03,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:03,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:16:03,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:16:03,861 INFO L87 Difference]: Start difference. First operand 274 states and 350 transitions. Second operand 6 states. [2020-10-15 03:16:04,007 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-15 03:16:04,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:04,587 INFO L93 Difference]: Finished difference Result 622 states and 849 transitions. [2020-10-15 03:16:04,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:16:04,588 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-10-15 03:16:04,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:04,591 INFO L225 Difference]: With dead ends: 622 [2020-10-15 03:16:04,591 INFO L226 Difference]: Without dead ends: 540 [2020-10-15 03:16:04,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:16:04,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2020-10-15 03:16:04,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 404. [2020-10-15 03:16:04,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 404 states. [2020-10-15 03:16:04,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 538 transitions. [2020-10-15 03:16:04,642 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 538 transitions. Word has length 55 [2020-10-15 03:16:04,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:04,643 INFO L479 AbstractCegarLoop]: Abstraction has 404 states and 538 transitions. [2020-10-15 03:16:04,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:16:04,643 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 538 transitions. [2020-10-15 03:16:04,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-15 03:16:04,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:04,644 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] [2020-10-15 03:16:04,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:16:04,645 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:04,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:04,646 INFO L82 PathProgramCache]: Analyzing trace with hash -749860132, now seen corresponding path program 1 times [2020-10-15 03:16:04,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:04,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93875938] [2020-10-15 03:16:04,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:04,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:04,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:04,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:04,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:04,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:05,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:05,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:05,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:06,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:06,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:06,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:09,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:09,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:09,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-15 03:16:09,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:16:09,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 03:16:09,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:09,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:09,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:16:09,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:16:09,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 03:16:09,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:16:09,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:09,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:09,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:09,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:09,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:09,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:09,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:16:09,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:09,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:09,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:16:09,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:09,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:16:09,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:09,871 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 03:16:09,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [93875938] [2020-10-15 03:16:09,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:09,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:16:09,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837154682] [2020-10-15 03:16:09,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:16:09,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:09,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:16:09,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:16:09,874 INFO L87 Difference]: Start difference. First operand 404 states and 538 transitions. Second operand 6 states. [2020-10-15 03:16:10,020 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-15 03:16:10,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:10,837 INFO L93 Difference]: Finished difference Result 802 states and 1105 transitions. [2020-10-15 03:16:10,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:16:10,838 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-10-15 03:16:10,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:10,843 INFO L225 Difference]: With dead ends: 802 [2020-10-15 03:16:10,843 INFO L226 Difference]: Without dead ends: 684 [2020-10-15 03:16:10,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:16:10,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2020-10-15 03:16:10,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 532. [2020-10-15 03:16:10,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 532 states. [2020-10-15 03:16:10,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 723 transitions. [2020-10-15 03:16:10,922 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 723 transitions. Word has length 55 [2020-10-15 03:16:10,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:10,923 INFO L479 AbstractCegarLoop]: Abstraction has 532 states and 723 transitions. [2020-10-15 03:16:10,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:16:10,923 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 723 transitions. [2020-10-15 03:16:10,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-15 03:16:10,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:10,924 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] [2020-10-15 03:16:10,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:16:10,925 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:10,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:10,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1600057289, now seen corresponding path program 1 times [2020-10-15 03:16:10,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:10,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627457360] [2020-10-15 03:16:10,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:10,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:10,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:10,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:11,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:11,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:11,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:11,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:11,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:11,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:12,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:14,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:14,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:15,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:15,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-15 03:16:15,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:16:15,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:16:15,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:15,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:15,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:16:15,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-15 03:16:15,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 03:16:15,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:16:16,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:16,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:16,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:16,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:16,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:16,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:16:16,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:16,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:16,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:16:16,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:16,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:16:16,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:16,107 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 03:16:16,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [627457360] [2020-10-15 03:16:16,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:16,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:16:16,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568015463] [2020-10-15 03:16:16,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:16:16,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:16,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:16:16,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:16:16,109 INFO L87 Difference]: Start difference. First operand 532 states and 723 transitions. Second operand 6 states. [2020-10-15 03:16:16,247 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-15 03:16:16,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:16,834 INFO L93 Difference]: Finished difference Result 919 states and 1274 transitions. [2020-10-15 03:16:16,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:16:16,835 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-10-15 03:16:16,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:16,839 INFO L225 Difference]: With dead ends: 919 [2020-10-15 03:16:16,839 INFO L226 Difference]: Without dead ends: 801 [2020-10-15 03:16:16,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:16:16,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2020-10-15 03:16:16,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 626. [2020-10-15 03:16:16,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2020-10-15 03:16:16,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 859 transitions. [2020-10-15 03:16:16,926 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 859 transitions. Word has length 55 [2020-10-15 03:16:16,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:16,926 INFO L479 AbstractCegarLoop]: Abstraction has 626 states and 859 transitions. [2020-10-15 03:16:16,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:16:16,926 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 859 transitions. [2020-10-15 03:16:16,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-15 03:16:16,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:16,927 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 03:16:16,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:16:16,928 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:16,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:16,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1204095675, now seen corresponding path program 1 times [2020-10-15 03:16:16,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:16,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662932611] [2020-10-15 03:16:16,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:16,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:16,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:17,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:17,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:17,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:17,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:17,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:17,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:18,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:21,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:21,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-15 03:16:21,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:16:21,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:16:21,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:21,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:21,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:16:21,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:16:21,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 03:16:21,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:22,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:22,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:22,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:22,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:22,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:22,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:22,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:16:22,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:22,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:22,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:16:22,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:22,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:16:22,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:16:22,287 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 03:16:22,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662932611] [2020-10-15 03:16:22,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:22,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:16:22,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929742675] [2020-10-15 03:16:22,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:16:22,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:22,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:16:22,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:16:22,290 INFO L87 Difference]: Start difference. First operand 626 states and 859 transitions. Second operand 10 states. [2020-10-15 03:16:22,434 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-15 03:16:23,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:23,805 INFO L93 Difference]: Finished difference Result 2132 states and 3037 transitions. [2020-10-15 03:16:23,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:16:23,806 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2020-10-15 03:16:23,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:23,813 INFO L225 Difference]: With dead ends: 2132 [2020-10-15 03:16:23,813 INFO L226 Difference]: Without dead ends: 1903 [2020-10-15 03:16:23,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-10-15 03:16:23,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1903 states. [2020-10-15 03:16:23,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1903 to 604. [2020-10-15 03:16:23,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 604 states. [2020-10-15 03:16:23,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 826 transitions. [2020-10-15 03:16:23,925 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 826 transitions. Word has length 56 [2020-10-15 03:16:23,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:23,925 INFO L479 AbstractCegarLoop]: Abstraction has 604 states and 826 transitions. [2020-10-15 03:16:23,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:16:23,925 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 826 transitions. [2020-10-15 03:16:23,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-15 03:16:23,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:23,926 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, 1, 1, 1, 1, 1] [2020-10-15 03:16:23,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:16:23,926 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:23,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:23,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1938989571, now seen corresponding path program 1 times [2020-10-15 03:16:23,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:23,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36164823] [2020-10-15 03:16:23,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:23,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:23,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:24,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:24,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:24,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:24,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:24,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:24,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:25,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:28,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:28,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-15 03:16:28,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:16:28,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 03:16:28,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:28,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:28,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:16:28,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:16:28,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-15 03:16:28,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:29,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:29,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:29,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:29,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:29,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:29,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:29,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:16:29,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:29,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:29,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:16:29,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:29,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:16:29,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:16:29,348 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 03:16:29,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [36164823] [2020-10-15 03:16:29,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:29,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:16:29,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591247374] [2020-10-15 03:16:29,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:16:29,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:29,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:16:29,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:16:29,351 INFO L87 Difference]: Start difference. First operand 604 states and 826 transitions. Second operand 10 states. [2020-10-15 03:16:29,547 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-15 03:16:31,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:31,371 INFO L93 Difference]: Finished difference Result 2060 states and 2937 transitions. [2020-10-15 03:16:31,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:16:31,372 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2020-10-15 03:16:31,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:31,380 INFO L225 Difference]: With dead ends: 2060 [2020-10-15 03:16:31,380 INFO L226 Difference]: Without dead ends: 1847 [2020-10-15 03:16:31,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-10-15 03:16:31,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1847 states. [2020-10-15 03:16:31,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1847 to 592. [2020-10-15 03:16:31,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2020-10-15 03:16:31,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 809 transitions. [2020-10-15 03:16:31,512 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 809 transitions. Word has length 56 [2020-10-15 03:16:31,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:31,513 INFO L479 AbstractCegarLoop]: Abstraction has 592 states and 809 transitions. [2020-10-15 03:16:31,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:16:31,513 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 809 transitions. [2020-10-15 03:16:31,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-15 03:16:31,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:31,514 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 03:16:31,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:16:31,515 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:31,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:31,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1769669634, now seen corresponding path program 1 times [2020-10-15 03:16:31,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:31,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1837455268] [2020-10-15 03:16:31,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:31,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:31,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:31,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:31,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:31,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:32,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:32,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:32,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:32,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:32,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:36,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:36,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-15 03:16:36,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:16:36,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:16:36,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:36,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:36,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:16:36,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:16:36,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 03:16:36,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:36,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:36,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:36,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:36,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:36,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:36,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:36,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 03:16:36,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:36,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:36,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:16:36,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:36,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:16:36,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:36,906 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 03:16:36,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1837455268] [2020-10-15 03:16:36,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:36,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:16:36,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158389942] [2020-10-15 03:16:36,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:16:36,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:36,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:16:36,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:16:36,908 INFO L87 Difference]: Start difference. First operand 592 states and 809 transitions. Second operand 9 states. [2020-10-15 03:16:37,116 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:16:38,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:38,604 INFO L93 Difference]: Finished difference Result 2026 states and 2899 transitions. [2020-10-15 03:16:38,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 03:16:38,606 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-10-15 03:16:38,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:38,615 INFO L225 Difference]: With dead ends: 2026 [2020-10-15 03:16:38,615 INFO L226 Difference]: Without dead ends: 1795 [2020-10-15 03:16:38,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:16:38,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1795 states. [2020-10-15 03:16:38,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1795 to 559. [2020-10-15 03:16:38,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-15 03:16:38,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 766 transitions. [2020-10-15 03:16:38,800 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 766 transitions. Word has length 56 [2020-10-15 03:16:38,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:38,801 INFO L479 AbstractCegarLoop]: Abstraction has 559 states and 766 transitions. [2020-10-15 03:16:38,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:16:38,801 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 766 transitions. [2020-10-15 03:16:38,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-15 03:16:38,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:38,813 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] [2020-10-15 03:16:38,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:16:38,816 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:38,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:38,816 INFO L82 PathProgramCache]: Analyzing trace with hash 232658019, now seen corresponding path program 1 times [2020-10-15 03:16:38,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:38,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101839994] [2020-10-15 03:16:38,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:38,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:38,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:38,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:38,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:38,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:39,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:39,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:39,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:39,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:40,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:43,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:43,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 03:16:43,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:16:43,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 03:16:43,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:43,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:43,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:16:43,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:16:43,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 03:16:43,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:44,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:44,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:44,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:44,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:44,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:44,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:44,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:16:44,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:44,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:44,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:16:44,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:44,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:16:44,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:44,044 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 03:16:44,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101839994] [2020-10-15 03:16:44,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:44,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:16:44,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521002033] [2020-10-15 03:16:44,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:16:44,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:44,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:16:44,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:16:44,047 INFO L87 Difference]: Start difference. First operand 559 states and 766 transitions. Second operand 6 states. [2020-10-15 03:16:44,189 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-15 03:16:44,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:44,785 INFO L93 Difference]: Finished difference Result 1373 states and 1960 transitions. [2020-10-15 03:16:44,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:16:44,786 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 74 [2020-10-15 03:16:44,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:44,790 INFO L225 Difference]: With dead ends: 1373 [2020-10-15 03:16:44,790 INFO L226 Difference]: Without dead ends: 903 [2020-10-15 03:16:44,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:16:44,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2020-10-15 03:16:45,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 901. [2020-10-15 03:16:45,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2020-10-15 03:16:45,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1283 transitions. [2020-10-15 03:16:45,010 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1283 transitions. Word has length 74 [2020-10-15 03:16:45,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:45,011 INFO L479 AbstractCegarLoop]: Abstraction has 901 states and 1283 transitions. [2020-10-15 03:16:45,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:16:45,011 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1283 transitions. [2020-10-15 03:16:45,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 03:16:45,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:45,013 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 03:16:45,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:16:45,013 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:45,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:45,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1716134419, now seen corresponding path program 1 times [2020-10-15 03:16:45,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:45,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469053759] [2020-10-15 03:16:45,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:45,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:45,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:45,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:45,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:45,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:45,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:46,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:46,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:48,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:48,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:50,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:50,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 03:16:50,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:16:50,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:16:50,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:50,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:50,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:16:50,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:16:50,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 03:16:50,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:50,202 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 25 [2020-10-15 03:16:50,346 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-15 03:16:50,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:50,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:50,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:50,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:50,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:50,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:50,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:16:50,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:50,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:50,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:16:50,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:50,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:16:50,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:50,370 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 03:16:50,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1469053759] [2020-10-15 03:16:50,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:50,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:16:50,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424128625] [2020-10-15 03:16:50,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:16:50,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:50,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:16:50,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:16:50,373 INFO L87 Difference]: Start difference. First operand 901 states and 1283 transitions. Second operand 9 states. [2020-10-15 03:16:50,567 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-15 03:16:51,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:51,622 INFO L93 Difference]: Finished difference Result 2091 states and 3016 transitions. [2020-10-15 03:16:51,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 03:16:51,622 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2020-10-15 03:16:51,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:51,628 INFO L225 Difference]: With dead ends: 2091 [2020-10-15 03:16:51,628 INFO L226 Difference]: Without dead ends: 1289 [2020-10-15 03:16:51,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-10-15 03:16:51,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2020-10-15 03:16:51,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 901. [2020-10-15 03:16:51,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2020-10-15 03:16:51,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1279 transitions. [2020-10-15 03:16:51,908 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1279 transitions. Word has length 75 [2020-10-15 03:16:51,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:51,908 INFO L479 AbstractCegarLoop]: Abstraction has 901 states and 1279 transitions. [2020-10-15 03:16:51,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:16:51,908 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1279 transitions. [2020-10-15 03:16:51,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-15 03:16:51,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:51,910 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 03:16:51,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:16:51,910 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:51,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:51,910 INFO L82 PathProgramCache]: Analyzing trace with hash 2016559601, now seen corresponding path program 1 times [2020-10-15 03:16:51,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:51,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938500935] [2020-10-15 03:16:51,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:51,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:51,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:52,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:52,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:52,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:52,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:54,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:54,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:54,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:56,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:56,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 03:16:56,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:16:56,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:16:56,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:56,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:56,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:16:56,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 03:16:56,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-15 03:16:56,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:57,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:57,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:57,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:57,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:57,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:57,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:57,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:16:57,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:57,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:57,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:16:57,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:57,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:16:57,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:57,125 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 03:16:57,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938500935] [2020-10-15 03:16:57,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:57,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:16:57,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96395334] [2020-10-15 03:16:57,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:16:57,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:57,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:16:57,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:16:57,127 INFO L87 Difference]: Start difference. First operand 901 states and 1279 transitions. Second operand 6 states. [2020-10-15 03:16:57,244 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-15 03:16:58,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:58,281 INFO L93 Difference]: Finished difference Result 2925 states and 4222 transitions. [2020-10-15 03:16:58,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:16:58,282 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-10-15 03:16:58,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:58,289 INFO L225 Difference]: With dead ends: 2925 [2020-10-15 03:16:58,289 INFO L226 Difference]: Without dead ends: 2151 [2020-10-15 03:16:58,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:16:58,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2151 states. [2020-10-15 03:16:58,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2151 to 2147. [2020-10-15 03:16:58,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2147 states. [2020-10-15 03:16:58,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 3033 transitions. [2020-10-15 03:16:58,904 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 3033 transitions. Word has length 76 [2020-10-15 03:16:58,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:58,904 INFO L479 AbstractCegarLoop]: Abstraction has 2147 states and 3033 transitions. [2020-10-15 03:16:58,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:16:58,904 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 3033 transitions. [2020-10-15 03:16:58,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-15 03:16:58,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:58,906 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 03:16:58,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 03:16:58,906 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:58,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:58,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1949485684, now seen corresponding path program 1 times [2020-10-15 03:16:58,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:58,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118850411] [2020-10-15 03:16:58,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:58,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:58,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:58,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:58,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:59,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:59,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:59,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:01,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:03,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:03,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-15 03:17:03,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:17:03,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:17:03,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:03,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:03,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:17:03,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:17:03,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 03:17:03,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:04,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:17:04,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:04,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:04,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:04,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:17:04,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:17:04,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:17:04,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:04,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:04,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:17:04,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:17:04,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:17:04,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:04,082 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 03:17:04,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118850411] [2020-10-15 03:17:04,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:17:04,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:17:04,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646035693] [2020-10-15 03:17:04,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:17:04,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:17:04,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:17:04,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:17:04,084 INFO L87 Difference]: Start difference. First operand 2147 states and 3033 transitions. Second operand 6 states. [2020-10-15 03:17:05,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:17:05,697 INFO L93 Difference]: Finished difference Result 6111 states and 8743 transitions. [2020-10-15 03:17:05,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:17:05,698 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-10-15 03:17:05,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:17:05,712 INFO L225 Difference]: With dead ends: 6111 [2020-10-15 03:17:05,713 INFO L226 Difference]: Without dead ends: 4049 [2020-10-15 03:17:05,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:17:05,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4049 states. [2020-10-15 03:17:06,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4049 to 4047. [2020-10-15 03:17:06,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4047 states. [2020-10-15 03:17:06,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4047 states to 4047 states and 5747 transitions. [2020-10-15 03:17:06,934 INFO L78 Accepts]: Start accepts. Automaton has 4047 states and 5747 transitions. Word has length 77 [2020-10-15 03:17:06,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:17:06,935 INFO L479 AbstractCegarLoop]: Abstraction has 4047 states and 5747 transitions. [2020-10-15 03:17:06,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:17:06,935 INFO L276 IsEmpty]: Start isEmpty. Operand 4047 states and 5747 transitions. [2020-10-15 03:17:06,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-15 03:17:06,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:17:06,938 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] [2020-10-15 03:17:06,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 03:17:06,939 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:17:06,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:17:06,939 INFO L82 PathProgramCache]: Analyzing trace with hash 194540708, now seen corresponding path program 1 times [2020-10-15 03:17:06,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:17:06,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138890697] [2020-10-15 03:17:06,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:17:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:06,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:06,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:07,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:07,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:07,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:07,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:09,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:11,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:11,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-15 03:17:11,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:17:11,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:17:11,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:11,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:11,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:17:11,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:17:11,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 03:17:11,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:12,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:17:12,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:12,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:12,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:12,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:17:12,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:17:12,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:17:12,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:12,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:12,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:17:12,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:17:12,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:17:12,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:12,243 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 03:17:12,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2138890697] [2020-10-15 03:17:12,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:17:12,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:17:12,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725182304] [2020-10-15 03:17:12,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:17:12,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:17:12,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:17:12,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:17:12,245 INFO L87 Difference]: Start difference. First operand 4047 states and 5747 transitions. Second operand 8 states. [2020-10-15 03:17:12,414 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-15 03:17:14,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:17:14,948 INFO L93 Difference]: Finished difference Result 9401 states and 13351 transitions. [2020-10-15 03:17:14,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:17:14,949 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-10-15 03:17:14,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:17:14,974 INFO L225 Difference]: With dead ends: 9401 [2020-10-15 03:17:14,975 INFO L226 Difference]: Without dead ends: 6011 [2020-10-15 03:17:14,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-15 03:17:14,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6011 states. [2020-10-15 03:17:16,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6011 to 4047. [2020-10-15 03:17:16,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4047 states. [2020-10-15 03:17:16,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4047 states to 4047 states and 5745 transitions. [2020-10-15 03:17:16,216 INFO L78 Accepts]: Start accepts. Automaton has 4047 states and 5745 transitions. Word has length 78 [2020-10-15 03:17:16,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:17:16,216 INFO L479 AbstractCegarLoop]: Abstraction has 4047 states and 5745 transitions. [2020-10-15 03:17:16,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:17:16,217 INFO L276 IsEmpty]: Start isEmpty. Operand 4047 states and 5745 transitions. [2020-10-15 03:17:16,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-15 03:17:16,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:17:16,219 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 03:17:16,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 03:17:16,219 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:17:16,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:17:16,219 INFO L82 PathProgramCache]: Analyzing trace with hash -2080736852, now seen corresponding path program 1 times [2020-10-15 03:17:16,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:17:16,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [963416100] [2020-10-15 03:17:16,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:17:16,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:16,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:16,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:16,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:16,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:16,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:18,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:18,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-15 03:17:18,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:17:18,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2155 [2020-10-15 03:17:18,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:18,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:18,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:17:18,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:17:18,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 03:17:18,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:18,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:17:18,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:18,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:18,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:18,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:17:18,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:17:18,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:17:18,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:18,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:18,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:17:18,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:17:18,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:17:18,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:18,549 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 03:17:18,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [963416100] [2020-10-15 03:17:18,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:17:18,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:17:18,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619336779] [2020-10-15 03:17:18,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:17:18,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:17:18,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:17:18,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:17:18,556 INFO L87 Difference]: Start difference. First operand 4047 states and 5745 transitions. Second operand 6 states. [2020-10-15 03:17:18,728 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-15 03:17:20,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:17:20,341 INFO L93 Difference]: Finished difference Result 7873 states and 11258 transitions. [2020-10-15 03:17:20,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:17:20,342 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-10-15 03:17:20,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:17:20,351 INFO L225 Difference]: With dead ends: 7873 [2020-10-15 03:17:20,351 INFO L226 Difference]: Without dead ends: 3904 [2020-10-15 03:17:20,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:17:20,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3904 states. [2020-10-15 03:17:21,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3904 to 3904. [2020-10-15 03:17:21,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3904 states. [2020-10-15 03:17:21,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3904 states to 3904 states and 5486 transitions. [2020-10-15 03:17:21,659 INFO L78 Accepts]: Start accepts. Automaton has 3904 states and 5486 transitions. Word has length 79 [2020-10-15 03:17:21,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:17:21,660 INFO L479 AbstractCegarLoop]: Abstraction has 3904 states and 5486 transitions. [2020-10-15 03:17:21,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:17:21,660 INFO L276 IsEmpty]: Start isEmpty. Operand 3904 states and 5486 transitions. [2020-10-15 03:17:21,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-15 03:17:21,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:17:21,663 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 03:17:21,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 03:17:21,663 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:17:21,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:17:21,663 INFO L82 PathProgramCache]: Analyzing trace with hash 767739883, now seen corresponding path program 1 times [2020-10-15 03:17:21,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:17:21,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000103033] [2020-10-15 03:17:21,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:17:21,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:21,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:21,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:21,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:21,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:21,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:21,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:22,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:24,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:26,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:26,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-15 03:17:26,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:17:26,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 03:17:26,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:26,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:26,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:17:26,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:17:26,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 03:17:26,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:27,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:17:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:27,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:27,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:27,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:17:27,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:17:27,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:17:27,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:27,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:27,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:17:27,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:17:27,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:17:27,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:27,022 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 03:17:27,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000103033] [2020-10-15 03:17:27,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:17:27,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:17:27,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599714118] [2020-10-15 03:17:27,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:17:27,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:17:27,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:17:27,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:17:27,024 INFO L87 Difference]: Start difference. First operand 3904 states and 5486 transitions. Second operand 9 states. [2020-10-15 03:17:27,211 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-15 03:17:31,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:17:31,113 INFO L93 Difference]: Finished difference Result 11578 states and 16314 transitions. [2020-10-15 03:17:31,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 03:17:31,114 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 80 [2020-10-15 03:17:31,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:17:31,138 INFO L225 Difference]: With dead ends: 11578 [2020-10-15 03:17:31,138 INFO L226 Difference]: Without dead ends: 7752 [2020-10-15 03:17:31,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-10-15 03:17:31,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7752 states. [2020-10-15 03:17:32,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7752 to 3904. [2020-10-15 03:17:32,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3904 states. [2020-10-15 03:17:32,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3904 states to 3904 states and 5484 transitions. [2020-10-15 03:17:32,582 INFO L78 Accepts]: Start accepts. Automaton has 3904 states and 5484 transitions. Word has length 80 [2020-10-15 03:17:32,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:17:32,582 INFO L479 AbstractCegarLoop]: Abstraction has 3904 states and 5484 transitions. [2020-10-15 03:17:32,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:17:32,582 INFO L276 IsEmpty]: Start isEmpty. Operand 3904 states and 5484 transitions. [2020-10-15 03:17:32,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-15 03:17:32,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:17:32,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:17:32,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 03:17:32,585 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:17:32,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:17:32,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1364059825, now seen corresponding path program 1 times [2020-10-15 03:17:32,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:17:32,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310075350] [2020-10-15 03:17:32,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:17:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:32,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:32,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:32,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:32,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:33,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:36,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:37,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:37,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-15 03:17:37,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:17:37,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 03:17:37,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:37,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:37,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 03:17:37,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:17:37,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-15 03:17:37,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:38,233 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 35 [2020-10-15 03:17:38,603 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-15 03:17:38,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:17:38,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:38,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:38,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:38,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:17:38,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:17:38,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:17:38,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:38,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:38,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:17:38,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:17:38,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:17:38,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:38,640 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 03:17:38,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310075350] [2020-10-15 03:17:38,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:17:38,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-15 03:17:38,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225411894] [2020-10-15 03:17:38,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-15 03:17:38,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:17:38,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-15 03:17:38,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2020-10-15 03:17:38,644 INFO L87 Difference]: Start difference. First operand 3904 states and 5484 transitions. Second operand 18 states. [2020-10-15 03:17:38,790 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-10-15 03:17:39,344 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 158 [2020-10-15 03:17:39,901 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2020-10-15 03:17:40,186 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 59 [2020-10-15 03:17:49,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:17:49,331 INFO L93 Difference]: Finished difference Result 23641 states and 33237 transitions. [2020-10-15 03:17:49,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-15 03:17:49,332 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 81 [2020-10-15 03:17:49,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:17:49,382 INFO L225 Difference]: With dead ends: 23641 [2020-10-15 03:17:49,383 INFO L226 Difference]: Without dead ends: 19821 [2020-10-15 03:17:49,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=175, Invalid=817, Unknown=0, NotChecked=0, Total=992 [2020-10-15 03:17:49,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19821 states. [2020-10-15 03:17:50,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19821 to 3908. [2020-10-15 03:17:50,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3908 states. [2020-10-15 03:17:50,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3908 states to 3908 states and 5488 transitions. [2020-10-15 03:17:50,850 INFO L78 Accepts]: Start accepts. Automaton has 3908 states and 5488 transitions. Word has length 81 [2020-10-15 03:17:50,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:17:50,851 INFO L479 AbstractCegarLoop]: Abstraction has 3908 states and 5488 transitions. [2020-10-15 03:17:50,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-15 03:17:50,851 INFO L276 IsEmpty]: Start isEmpty. Operand 3908 states and 5488 transitions. [2020-10-15 03:17:50,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-15 03:17:50,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:17:50,854 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:17:50,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 03:17:50,854 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:17:50,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:17:50,855 INFO L82 PathProgramCache]: Analyzing trace with hash -446910163, now seen corresponding path program 1 times [2020-10-15 03:17:50,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:17:50,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561950059] [2020-10-15 03:17:50,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:17:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:50,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:50,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:50,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:51,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:51,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:51,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-15 03:17:51,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:17:51,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 708 [2020-10-15 03:17:51,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:51,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:51,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:17:51,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-15 03:17:51,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 03:17:51,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:51,765 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-15 03:17:51,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:17:51,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:51,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:51,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:51,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:17:51,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:17:51,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 03:17:51,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:51,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:51,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:17:51,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:17:51,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:17:51,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:51,784 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 03:17:51,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561950059] [2020-10-15 03:17:51,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:17:51,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:17:51,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821971947] [2020-10-15 03:17:51,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:17:51,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:17:51,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:17:51,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:17:51,793 INFO L87 Difference]: Start difference. First operand 3908 states and 5488 transitions. Second operand 4 states. [2020-10-15 03:17:51,931 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-15 03:17:54,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:17:54,795 INFO L93 Difference]: Finished difference Result 11088 states and 15482 transitions. [2020-10-15 03:17:54,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:17:54,796 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-10-15 03:17:54,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:17:54,828 INFO L225 Difference]: With dead ends: 11088 [2020-10-15 03:17:54,829 INFO L226 Difference]: Without dead ends: 7274 [2020-10-15 03:17:54,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:17:54,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7274 states. [2020-10-15 03:17:57,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7274 to 6936. [2020-10-15 03:17:57,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6936 states. [2020-10-15 03:17:57,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6936 states to 6936 states and 9588 transitions. [2020-10-15 03:17:57,828 INFO L78 Accepts]: Start accepts. Automaton has 6936 states and 9588 transitions. Word has length 82 [2020-10-15 03:17:57,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:17:57,829 INFO L479 AbstractCegarLoop]: Abstraction has 6936 states and 9588 transitions. [2020-10-15 03:17:57,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:17:57,829 INFO L276 IsEmpty]: Start isEmpty. Operand 6936 states and 9588 transitions. [2020-10-15 03:17:57,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-15 03:17:57,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:17:57,831 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 03:17:57,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 03:17:57,832 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:17:57,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:17:57,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1881861948, now seen corresponding path program 1 times [2020-10-15 03:17:57,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:17:57,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724228678] [2020-10-15 03:17:57,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:17:57,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:57,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:57,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:57,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:57,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:57,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:58,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:58,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:58,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:00,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:02,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:02,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-15 03:18:02,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:18:02,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:18:02,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:02,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:02,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:18:02,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:18:02,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-15 03:18:02,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:03,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:18:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:03,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:03,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:03,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:18:03,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:18:03,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:18:03,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:03,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:03,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:18:03,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:18:03,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:18:03,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:03,027 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 03:18:03,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724228678] [2020-10-15 03:18:03,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:18:03,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:18:03,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273267204] [2020-10-15 03:18:03,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:18:03,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:18:03,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:18:03,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:18:03,029 INFO L87 Difference]: Start difference. First operand 6936 states and 9588 transitions. Second operand 6 states. [2020-10-15 03:18:03,182 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-15 03:18:05,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:18:05,426 INFO L93 Difference]: Finished difference Result 11984 states and 16523 transitions. [2020-10-15 03:18:05,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:18:05,427 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2020-10-15 03:18:05,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:18:05,433 INFO L225 Difference]: With dead ends: 11984 [2020-10-15 03:18:05,433 INFO L226 Difference]: Without dead ends: 5142 [2020-10-15 03:18:05,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:18:05,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5142 states. [2020-10-15 03:18:06,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5142 to 3504. [2020-10-15 03:18:06,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3504 states. [2020-10-15 03:18:06,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3504 states to 3504 states and 4804 transitions. [2020-10-15 03:18:06,759 INFO L78 Accepts]: Start accepts. Automaton has 3504 states and 4804 transitions. Word has length 83 [2020-10-15 03:18:06,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:18:06,759 INFO L479 AbstractCegarLoop]: Abstraction has 3504 states and 4804 transitions. [2020-10-15 03:18:06,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:18:06,759 INFO L276 IsEmpty]: Start isEmpty. Operand 3504 states and 4804 transitions. [2020-10-15 03:18:06,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-15 03:18:06,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:18:06,761 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 03:18:06,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-15 03:18:06,761 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:18:06,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:18:06,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1109998295, now seen corresponding path program 1 times [2020-10-15 03:18:06,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:18:06,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880230644] [2020-10-15 03:18:06,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:18:06,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:06,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:06,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:06,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:07,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:07,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-15 03:18:07,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:18:07,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 507 [2020-10-15 03:18:07,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:07,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:07,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:18:07,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-15 03:18:07,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 03:18:07,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:07,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:18:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:07,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:07,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:07,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:18:07,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:18:07,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 03:18:07,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:07,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:07,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:18:07,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:18:07,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:18:07,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:07,450 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 03:18:07,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880230644] [2020-10-15 03:18:07,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:18:07,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:18:07,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601000286] [2020-10-15 03:18:07,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:18:07,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:18:07,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:18:07,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:18:07,452 INFO L87 Difference]: Start difference. First operand 3504 states and 4804 transitions. Second operand 4 states. [2020-10-15 03:18:07,600 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-15 03:18:10,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:18:10,299 INFO L93 Difference]: Finished difference Result 9900 states and 13454 transitions. [2020-10-15 03:18:10,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:18:10,300 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-10-15 03:18:10,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:18:10,309 INFO L225 Difference]: With dead ends: 9900 [2020-10-15 03:18:10,309 INFO L226 Difference]: Without dead ends: 6478 [2020-10-15 03:18:10,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:18:10,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6478 states. [2020-10-15 03:18:12,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6478 to 6140. [2020-10-15 03:18:12,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6140 states. [2020-10-15 03:18:12,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6140 states to 6140 states and 8288 transitions. [2020-10-15 03:18:12,694 INFO L78 Accepts]: Start accepts. Automaton has 6140 states and 8288 transitions. Word has length 83 [2020-10-15 03:18:12,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:18:12,694 INFO L479 AbstractCegarLoop]: Abstraction has 6140 states and 8288 transitions. [2020-10-15 03:18:12,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:18:12,694 INFO L276 IsEmpty]: Start isEmpty. Operand 6140 states and 8288 transitions. [2020-10-15 03:18:12,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-15 03:18:12,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:18:12,695 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 03:18:12,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-15 03:18:12,696 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:18:12,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:18:12,696 INFO L82 PathProgramCache]: Analyzing trace with hash -711138206, now seen corresponding path program 1 times [2020-10-15 03:18:12,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:18:12,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480254929] [2020-10-15 03:18:12,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:18:12,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:12,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:12,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:12,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:12,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-15 03:18:12,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:18:12,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-15 03:18:12,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:12,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:12,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:18:12,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-15 03:18:12,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 03:18:12,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:13,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:18:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:13,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:13,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:13,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:18:13,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:18:13,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 03:18:13,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:13,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:13,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:18:13,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:18:13,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:18:13,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:13,128 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 03:18:13,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1480254929] [2020-10-15 03:18:13,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:18:13,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:18:13,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281780811] [2020-10-15 03:18:13,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:18:13,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:18:13,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:18:13,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:18:13,129 INFO L87 Difference]: Start difference. First operand 6140 states and 8288 transitions. Second operand 4 states. [2020-10-15 03:18:13,264 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-15 03:18:17,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:18:17,481 INFO L93 Difference]: Finished difference Result 14214 states and 19105 transitions. [2020-10-15 03:18:17,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:18:17,481 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2020-10-15 03:18:17,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:18:17,494 INFO L225 Difference]: With dead ends: 14214 [2020-10-15 03:18:17,494 INFO L226 Difference]: Without dead ends: 9962 [2020-10-15 03:18:17,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:18:17,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9962 states. [2020-10-15 03:18:21,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9962 to 9474. [2020-10-15 03:18:21,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9474 states. [2020-10-15 03:18:21,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9474 states to 9474 states and 12614 transitions. [2020-10-15 03:18:21,161 INFO L78 Accepts]: Start accepts. Automaton has 9474 states and 12614 transitions. Word has length 84 [2020-10-15 03:18:21,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:18:21,162 INFO L479 AbstractCegarLoop]: Abstraction has 9474 states and 12614 transitions. [2020-10-15 03:18:21,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:18:21,162 INFO L276 IsEmpty]: Start isEmpty. Operand 9474 states and 12614 transitions. [2020-10-15 03:18:21,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-15 03:18:21,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:18:21,163 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 03:18:21,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 03:18:21,163 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:18:21,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:18:21,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1483734464, now seen corresponding path program 1 times [2020-10-15 03:18:21,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:18:21,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408544882] [2020-10-15 03:18:21,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:18:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:21,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:21,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:21,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 03:18:21,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:18:21,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-15 03:18:21,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:21,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:21,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:18:21,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-15 03:18:21,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 03:18:21,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:21,531 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-15 03:18:21,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:18:21,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:21,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:21,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:21,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:18:21,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:18:21,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:18:21,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:21,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:21,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:18:21,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:18:21,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:18:21,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:21,552 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 03:18:21,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408544882] [2020-10-15 03:18:21,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:18:21,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:18:21,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142822059] [2020-10-15 03:18:21,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:18:21,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:18:21,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:18:21,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:18:21,554 INFO L87 Difference]: Start difference. First operand 9474 states and 12614 transitions. Second operand 6 states. [2020-10-15 03:18:27,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:18:27,867 INFO L93 Difference]: Finished difference Result 14500 states and 19112 transitions. [2020-10-15 03:18:27,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:18:27,867 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-10-15 03:18:27,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:18:27,881 INFO L225 Difference]: With dead ends: 14500 [2020-10-15 03:18:27,882 INFO L226 Difference]: Without dead ends: 14498 [2020-10-15 03:18:27,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:18:27,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14498 states. [2020-10-15 03:18:31,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14498 to 9858. [2020-10-15 03:18:31,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9858 states. [2020-10-15 03:18:31,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9858 states to 9858 states and 12886 transitions. [2020-10-15 03:18:31,714 INFO L78 Accepts]: Start accepts. Automaton has 9858 states and 12886 transitions. Word has length 85 [2020-10-15 03:18:31,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:18:31,715 INFO L479 AbstractCegarLoop]: Abstraction has 9858 states and 12886 transitions. [2020-10-15 03:18:31,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:18:31,715 INFO L276 IsEmpty]: Start isEmpty. Operand 9858 states and 12886 transitions. [2020-10-15 03:18:31,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-15 03:18:31,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:18:31,718 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:18:31,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 03:18:31,718 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:18:31,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:18:31,718 INFO L82 PathProgramCache]: Analyzing trace with hash 427209510, now seen corresponding path program 1 times [2020-10-15 03:18:31,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:18:31,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924754805] [2020-10-15 03:18:31,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:18:31,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:31,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:31,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:32,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:32,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:32,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:32,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:33,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:33,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:34,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:35,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:35,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:36,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:36,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-15 03:18:36,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:18:36,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 03:18:36,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:36,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:36,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:18:36,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:18:36,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-15 03:18:36,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:37,027 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 25 [2020-10-15 03:18:37,271 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-15 03:18:37,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:18:37,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:37,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:37,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:37,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:18:37,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:18:37,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:18:37,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:37,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:37,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:18:37,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:18:37,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:18:37,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:18:37,352 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:18:37,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924754805] [2020-10-15 03:18:37,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:18:37,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-15 03:18:37,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435481834] [2020-10-15 03:18:37,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:18:37,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:18:37,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:18:37,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:18:37,355 INFO L87 Difference]: Start difference. First operand 9858 states and 12886 transitions. Second operand 10 states. [2020-10-15 03:18:37,547 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-15 03:18:48,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:18:48,223 INFO L93 Difference]: Finished difference Result 26170 states and 33828 transitions. [2020-10-15 03:18:48,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 03:18:48,225 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 107 [2020-10-15 03:18:48,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:18:48,252 INFO L225 Difference]: With dead ends: 26170 [2020-10-15 03:18:48,252 INFO L226 Difference]: Without dead ends: 21604 [2020-10-15 03:18:48,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=174, Invalid=476, Unknown=0, NotChecked=0, Total=650 [2020-10-15 03:18:48,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21604 states. [2020-10-15 03:18:54,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21604 to 14442. [2020-10-15 03:18:54,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14442 states. [2020-10-15 03:18:54,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14442 states to 14442 states and 18840 transitions. [2020-10-15 03:18:54,258 INFO L78 Accepts]: Start accepts. Automaton has 14442 states and 18840 transitions. Word has length 107 [2020-10-15 03:18:54,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:18:54,259 INFO L479 AbstractCegarLoop]: Abstraction has 14442 states and 18840 transitions. [2020-10-15 03:18:54,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:18:54,259 INFO L276 IsEmpty]: Start isEmpty. Operand 14442 states and 18840 transitions. [2020-10-15 03:18:54,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-15 03:18:54,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:18:54,261 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:18:54,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-15 03:18:54,262 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:18:54,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:18:54,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1346029651, now seen corresponding path program 1 times [2020-10-15 03:18:54,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:18:54,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [780174921] [2020-10-15 03:18:54,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:18:54,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:54,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:54,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:54,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:54,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:54,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:54,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:55,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:55,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:55,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:55,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:56,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:56,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:57,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:57,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:57,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:58,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:58,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:59,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:59,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-15 03:18:59,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-15 03:18:59,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:18:59,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:59,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:59,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:18:59,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:18:59,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-15 03:18:59,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:59,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:18:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:59,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:59,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:59,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:18:59,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:18:59,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:18:59,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:59,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:59,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:18:59,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:18:59,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:18:59,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:59,575 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:18:59,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [780174921] [2020-10-15 03:18:59,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:18:59,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 03:18:59,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115921946] [2020-10-15 03:18:59,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:18:59,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:18:59,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:18:59,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:18:59,577 INFO L87 Difference]: Start difference. First operand 14442 states and 18840 transitions. Second operand 9 states. [2020-10-15 03:18:59,753 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-15 03:19:11,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:19:11,029 INFO L93 Difference]: Finished difference Result 33238 states and 42884 transitions. [2020-10-15 03:19:11,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-15 03:19:11,030 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 107 [2020-10-15 03:19:11,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:19:11,054 INFO L225 Difference]: With dead ends: 33238 [2020-10-15 03:19:11,054 INFO L226 Difference]: Without dead ends: 21604 [2020-10-15 03:19:11,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=167, Invalid=483, Unknown=0, NotChecked=0, Total=650 [2020-10-15 03:19:11,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21604 states. [2020-10-15 03:19:17,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21604 to 14442. [2020-10-15 03:19:17,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14442 states. [2020-10-15 03:19:18,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14442 states to 14442 states and 18738 transitions. [2020-10-15 03:19:18,021 INFO L78 Accepts]: Start accepts. Automaton has 14442 states and 18738 transitions. Word has length 107 [2020-10-15 03:19:18,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:19:18,021 INFO L479 AbstractCegarLoop]: Abstraction has 14442 states and 18738 transitions. [2020-10-15 03:19:18,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:19:18,021 INFO L276 IsEmpty]: Start isEmpty. Operand 14442 states and 18738 transitions. [2020-10-15 03:19:18,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-15 03:19:18,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:19:18,025 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:19:18,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-15 03:19:18,025 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:19:18,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:19:18,026 INFO L82 PathProgramCache]: Analyzing trace with hash -466713149, now seen corresponding path program 1 times [2020-10-15 03:19:18,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:19:18,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825732665] [2020-10-15 03:19:18,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:19:18,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:18,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:18,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:18,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:18,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:18,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:18,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:18,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:21,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:21,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:21,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:22,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:22,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:22,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:23,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:23,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-15 03:19:23,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:19:23,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:19:23,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:23,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:23,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:19:23,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:19:23,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-15 03:19:23,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:19:23,438 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 24 [2020-10-15 03:19:23,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:19:23,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:23,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:23,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:23,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:19:23,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:19:23,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:19:23,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:23,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:23,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:19:23,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:19:23,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:19:23,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:19:23,737 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:19:23,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825732665] [2020-10-15 03:19:23,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:19:23,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-15 03:19:23,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092262788] [2020-10-15 03:19:23,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:19:23,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:19:23,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:19:23,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:19:23,751 INFO L87 Difference]: Start difference. First operand 14442 states and 18738 transitions. Second operand 10 states. [2020-10-15 03:19:23,979 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 130