/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 08:57:05,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 08:57:05,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 08:57:05,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 08:57:05,676 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 08:57:05,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 08:57:05,678 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 08:57:05,680 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 08:57:05,682 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 08:57:05,683 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 08:57:05,684 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 08:57:05,685 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 08:57:05,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 08:57:05,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 08:57:05,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 08:57:05,689 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 08:57:05,690 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 08:57:05,691 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 08:57:05,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 08:57:05,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 08:57:05,696 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 08:57:05,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 08:57:05,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 08:57:05,699 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 08:57:05,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 08:57:05,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 08:57:05,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 08:57:05,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 08:57:05,703 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 08:57:05,704 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 08:57:05,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 08:57:05,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 08:57:05,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 08:57:05,707 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 08:57:05,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 08:57:05,708 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 08:57:05,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 08:57:05,709 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 08:57:05,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 08:57:05,710 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 08:57:05,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 08:57:05,712 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 [2020-10-14 08:57:05,736 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 08:57:05,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 08:57:05,737 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 08:57:05,738 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 08:57:05,738 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 08:57:05,738 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 08:57:05,738 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 08:57:05,738 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 08:57:05,739 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 08:57:05,739 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 08:57:05,739 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 08:57:05,739 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 08:57:05,739 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 08:57:05,740 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 08:57:05,740 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 08:57:05,740 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 08:57:05,740 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 08:57:05,740 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 08:57:05,740 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 08:57:05,741 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 08:57:05,741 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 08:57:05,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:57:05,741 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 08:57:05,741 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 08:57:05,742 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 08:57:05,742 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 08:57:05,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 08:57:05,742 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 08:57:05,742 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 08:57:05,743 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 08:57:06,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 08:57:06,087 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 08:57:06,092 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 08:57:06,095 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 08:57:06,095 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 08:57:06,096 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2020-10-14 08:57:06,172 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6290147a9/63c65b7db1d34233b6591cddb2027ad1/FLAG08dc8066f [2020-10-14 08:57:06,703 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 08:57:06,704 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2020-10-14 08:57:06,728 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6290147a9/63c65b7db1d34233b6591cddb2027ad1/FLAG08dc8066f [2020-10-14 08:57:07,008 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6290147a9/63c65b7db1d34233b6591cddb2027ad1 [2020-10-14 08:57:07,018 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 08:57:07,020 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 08:57:07,021 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 08:57:07,021 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 08:57:07,025 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 08:57:07,026 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:57:07" (1/1) ... [2020-10-14 08:57:07,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1613be08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:57:07, skipping insertion in model container [2020-10-14 08:57:07,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:57:07" (1/1) ... [2020-10-14 08:57:07,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 08:57:07,085 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 08:57:07,579 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:57:07,596 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 08:57:07,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:57:07,759 INFO L208 MainTranslator]: Completed translation [2020-10-14 08:57:07,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:57:07 WrapperNode [2020-10-14 08:57:07,760 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 08:57:07,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 08:57:07,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 08:57:07,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 08:57:07,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:57:07" (1/1) ... [2020-10-14 08:57:07,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:57:07" (1/1) ... [2020-10-14 08:57:07,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:57:07" (1/1) ... [2020-10-14 08:57:07,792 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:57:07" (1/1) ... [2020-10-14 08:57:07,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:57:07" (1/1) ... [2020-10-14 08:57:07,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:57:07" (1/1) ... [2020-10-14 08:57:07,832 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:57:07" (1/1) ... [2020-10-14 08:57:07,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 08:57:07,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 08:57:07,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 08:57:07,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 08:57:07,840 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:57:07" (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 [2020-10-14 08:57:07,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 08:57:07,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 08:57:07,905 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 08:57:07,905 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 08:57:07,905 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 08:57:07,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 08:57:07,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 08:57:07,906 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 08:57:07,906 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 08:57:07,906 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 08:57:07,906 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 08:57:07,906 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 08:57:07,907 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 08:57:07,907 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 08:57:07,907 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 08:57:07,907 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 08:57:07,907 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-14 08:57:07,908 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-14 08:57:07,908 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-14 08:57:07,908 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 08:57:07,908 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 08:57:07,908 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 08:57:07,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 08:57:07,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 08:57:08,850 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 08:57:08,851 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 08:57:08,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:57:08 BoogieIcfgContainer [2020-10-14 08:57:08,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 08:57:08,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 08:57:08,858 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 08:57:08,861 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 08:57:08,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:57:07" (1/3) ... [2020-10-14 08:57:08,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@523f078a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:57:08, skipping insertion in model container [2020-10-14 08:57:08,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:57:07" (2/3) ... [2020-10-14 08:57:08,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@523f078a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:57:08, skipping insertion in model container [2020-10-14 08:57:08,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:57:08" (3/3) ... [2020-10-14 08:57:08,865 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2020-10-14 08:57:08,875 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 08:57:08,883 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 08:57:08,897 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 08:57:08,923 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 08:57:08,923 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 08:57:08,923 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 08:57:08,923 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 08:57:08,924 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 08:57:08,924 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 08:57:08,924 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 08:57:08,924 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 08:57:08,945 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-10-14 08:57:08,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-14 08:57:08,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:57:08,958 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:57:08,959 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:57:08,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:57:08,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1581776616, now seen corresponding path program 1 times [2020-10-14 08:57:08,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:57:08,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239171835] [2020-10-14 08:57:08,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:57:09,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:09,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:09,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:09,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:09,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:10,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:10,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:10,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:11,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:11,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:11,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:12,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:12,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:12,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:13,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:13,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:13,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:14,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:14,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:57:14,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 08:57:14,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 08:57:14,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-14 08:57:14,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:57:14,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:57:14,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:57:14,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 08:57:14,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 08:57:14,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 08:57:14,904 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-14 08:57:14,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:57:14,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:14,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:14,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:57:14,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:57:14,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:57:14,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 08:57:14,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:57:14,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:57:14,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:57:14,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:57:14,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:57:14,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:57:14,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:57:14,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239171835] [2020-10-14 08:57:14,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:57:14,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:57:14,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499789921] [2020-10-14 08:57:15,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:57:15,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:57:15,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:57:15,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:57:15,023 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 4 states. [2020-10-14 08:57:15,428 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 08:57:16,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:57:16,763 INFO L93 Difference]: Finished difference Result 399 states and 662 transitions. [2020-10-14 08:57:16,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:57:16,765 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2020-10-14 08:57:16,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:57:16,782 INFO L225 Difference]: With dead ends: 399 [2020-10-14 08:57:16,782 INFO L226 Difference]: Without dead ends: 306 [2020-10-14 08:57:16,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:57:16,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-14 08:57:16,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 304. [2020-10-14 08:57:16,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-10-14 08:57:16,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 434 transitions. [2020-10-14 08:57:16,858 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 434 transitions. Word has length 112 [2020-10-14 08:57:16,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:57:16,859 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 434 transitions. [2020-10-14 08:57:16,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:57:16,860 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 434 transitions. [2020-10-14 08:57:16,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 08:57:16,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:57:16,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:57:16,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 08:57:16,864 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:57:16,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:57:16,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1235271490, now seen corresponding path program 1 times [2020-10-14 08:57:16,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:57:16,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087963863] [2020-10-14 08:57:16,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:57:16,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:16,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:17,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:17,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:17,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:17,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:17,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:17,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:17,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:17,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:18,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:18,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:18,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:19,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:19,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:19,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:20,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:21,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:21,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:57:21,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 08:57:21,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 08:57:21,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 08:57:21,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:57:21,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:57:21,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:57:21,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:57:21,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 08:57:21,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:57:22,258 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-14 08:57:22,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:57:22,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:22,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:22,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:57:22,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:57:22,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:57:22,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 08:57:22,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:57:22,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:57:22,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:57:22,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:57:22,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:57:22,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:57:22,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:57:22,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087963863] [2020-10-14 08:57:22,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:57:22,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:57:22,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400721043] [2020-10-14 08:57:22,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:57:22,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:57:22,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:57:22,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:57:22,338 INFO L87 Difference]: Start difference. First operand 304 states and 434 transitions. Second operand 6 states. [2020-10-14 08:57:22,591 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-14 08:57:23,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:57:23,381 INFO L93 Difference]: Finished difference Result 523 states and 776 transitions. [2020-10-14 08:57:23,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:57:23,382 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2020-10-14 08:57:23,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:57:23,387 INFO L225 Difference]: With dead ends: 523 [2020-10-14 08:57:23,387 INFO L226 Difference]: Without dead ends: 304 [2020-10-14 08:57:23,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:57:23,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-10-14 08:57:23,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2020-10-14 08:57:23,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-10-14 08:57:23,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 431 transitions. [2020-10-14 08:57:23,414 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 431 transitions. Word has length 114 [2020-10-14 08:57:23,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:57:23,415 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 431 transitions. [2020-10-14 08:57:23,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:57:23,415 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 431 transitions. [2020-10-14 08:57:23,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-14 08:57:23,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:57:23,418 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:57:23,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 08:57:23,418 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:57:23,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:57:23,419 INFO L82 PathProgramCache]: Analyzing trace with hash -107954188, now seen corresponding path program 1 times [2020-10-14 08:57:23,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:57:23,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287919862] [2020-10-14 08:57:23,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:57:23,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:23,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:23,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:23,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:23,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:23,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:23,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:23,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:24,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:24,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:24,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:24,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:24,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:25,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:28,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:57:28,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 08:57:28,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:57:28,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 08:57:28,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:57:28,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:57:28,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:57:28,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:57:28,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 08:57:28,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:57:28,719 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-14 08:57:28,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:57:28,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:28,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:28,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:57:28,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:57:28,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:57:28,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 08:57:28,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:57:28,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:57:28,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:57:28,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:57:28,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:57:28,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 08:57:28,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:57:28,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287919862] [2020-10-14 08:57:28,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:57:28,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:57:28,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123749454] [2020-10-14 08:57:28,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:57:28,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:57:28,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:57:28,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:57:28,816 INFO L87 Difference]: Start difference. First operand 304 states and 431 transitions. Second operand 6 states. [2020-10-14 08:57:29,042 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-14 08:57:29,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:57:29,824 INFO L93 Difference]: Finished difference Result 531 states and 780 transitions. [2020-10-14 08:57:29,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:57:29,825 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2020-10-14 08:57:29,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:57:29,830 INFO L225 Difference]: With dead ends: 531 [2020-10-14 08:57:29,830 INFO L226 Difference]: Without dead ends: 304 [2020-10-14 08:57:29,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:57:29,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-10-14 08:57:29,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2020-10-14 08:57:29,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-10-14 08:57:29,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 428 transitions. [2020-10-14 08:57:29,878 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 428 transitions. Word has length 115 [2020-10-14 08:57:29,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:57:29,878 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 428 transitions. [2020-10-14 08:57:29,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:57:29,878 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 428 transitions. [2020-10-14 08:57:29,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-14 08:57:29,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:57:29,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:57:29,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 08:57:29,886 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:57:29,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:57:29,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1648082594, now seen corresponding path program 1 times [2020-10-14 08:57:29,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:57:29,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352947516] [2020-10-14 08:57:29,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:57:29,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:29,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:29,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:30,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:30,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:30,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:30,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:30,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:30,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:30,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:30,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:34,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:57:34,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 08:57:34,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 08:57:34,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:57:34,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:57:34,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:57:34,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 08:57:34,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 08:57:34,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 08:57:34,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:57:35,189 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-14 08:57:35,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:57:35,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:35,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:35,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:57:35,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:57:35,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:57:35,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:57:35,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:57:35,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:57:35,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:57:35,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:57:35,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:57:35,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:57:35,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:57:35,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352947516] [2020-10-14 08:57:35,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:57:35,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 08:57:35,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206544938] [2020-10-14 08:57:35,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 08:57:35,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:57:35,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 08:57:35,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-14 08:57:35,240 INFO L87 Difference]: Start difference. First operand 304 states and 428 transitions. Second operand 7 states. [2020-10-14 08:57:35,504 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-14 08:57:37,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:57:37,028 INFO L93 Difference]: Finished difference Result 1795 states and 2725 transitions. [2020-10-14 08:57:37,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 08:57:37,029 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2020-10-14 08:57:37,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:57:37,038 INFO L225 Difference]: With dead ends: 1795 [2020-10-14 08:57:37,039 INFO L226 Difference]: Without dead ends: 1572 [2020-10-14 08:57:37,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-14 08:57:37,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2020-10-14 08:57:37,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 741. [2020-10-14 08:57:37,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 741 states. [2020-10-14 08:57:37,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1096 transitions. [2020-10-14 08:57:37,103 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1096 transitions. Word has length 116 [2020-10-14 08:57:37,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:57:37,104 INFO L479 AbstractCegarLoop]: Abstraction has 741 states and 1096 transitions. [2020-10-14 08:57:37,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 08:57:37,105 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1096 transitions. [2020-10-14 08:57:37,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-14 08:57:37,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:57:37,108 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:57:37,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 08:57:37,109 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:57:37,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:57:37,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1720288923, now seen corresponding path program 1 times [2020-10-14 08:57:37,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:57:37,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053246735] [2020-10-14 08:57:37,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:57:37,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:37,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:37,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:37,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:37,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:37,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:37,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:38,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:38,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:41,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:41,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:41,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:42,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:57:42,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 08:57:42,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:57:42,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 08:57:42,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:57:42,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:57:42,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:57:42,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:57:42,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 08:57:42,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:57:42,471 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-14 08:57:42,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:57:42,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:42,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:42,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:57:42,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:57:42,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:57:42,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 08:57:42,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:57:42,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:57:42,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:57:42,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:57:42,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:57:42,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:57:42,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:57:42,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053246735] [2020-10-14 08:57:42,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:57:42,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:57:42,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395317159] [2020-10-14 08:57:42,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:57:42,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:57:42,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:57:42,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:57:42,554 INFO L87 Difference]: Start difference. First operand 741 states and 1096 transitions. Second operand 6 states. [2020-10-14 08:57:42,892 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-14 08:57:43,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:57:43,697 INFO L93 Difference]: Finished difference Result 1397 states and 2100 transitions. [2020-10-14 08:57:43,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:57:43,698 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2020-10-14 08:57:43,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:57:43,703 INFO L225 Difference]: With dead ends: 1397 [2020-10-14 08:57:43,703 INFO L226 Difference]: Without dead ends: 741 [2020-10-14 08:57:43,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:57:43,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-10-14 08:57:43,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 741. [2020-10-14 08:57:43,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 741 states. [2020-10-14 08:57:43,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1088 transitions. [2020-10-14 08:57:43,779 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1088 transitions. Word has length 117 [2020-10-14 08:57:43,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:57:43,780 INFO L479 AbstractCegarLoop]: Abstraction has 741 states and 1088 transitions. [2020-10-14 08:57:43,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:57:43,780 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1088 transitions. [2020-10-14 08:57:43,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 08:57:43,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:57:43,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:57:43,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 08:57:43,782 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:57:43,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:57:43,782 INFO L82 PathProgramCache]: Analyzing trace with hash -232755616, now seen corresponding path program 1 times [2020-10-14 08:57:43,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:57:43,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905204708] [2020-10-14 08:57:43,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:57:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:43,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:43,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:43,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:43,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:44,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:44,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:44,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:44,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:47,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:48,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:48,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:48,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:48,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:57:48,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 08:57:48,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:57:48,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 08:57:48,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:57:48,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:57:48,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:57:48,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:57:48,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 08:57:48,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:57:49,061 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-14 08:57:49,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:57:49,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:49,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:49,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:57:49,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:57:49,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:57:49,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 08:57:49,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:57:49,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:57:49,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:57:49,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:57:49,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:57:49,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:57:49,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:57:49,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905204708] [2020-10-14 08:57:49,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:57:49,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:57:49,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25753033] [2020-10-14 08:57:49,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:57:49,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:57:49,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:57:49,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:57:49,127 INFO L87 Difference]: Start difference. First operand 741 states and 1088 transitions. Second operand 6 states. [2020-10-14 08:57:49,372 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-14 08:57:50,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:57:50,584 INFO L93 Difference]: Finished difference Result 1673 states and 2518 transitions. [2020-10-14 08:57:50,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:57:50,584 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2020-10-14 08:57:50,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:57:50,592 INFO L225 Difference]: With dead ends: 1673 [2020-10-14 08:57:50,593 INFO L226 Difference]: Without dead ends: 1213 [2020-10-14 08:57:50,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:57:50,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2020-10-14 08:57:50,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 966. [2020-10-14 08:57:50,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2020-10-14 08:57:50,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1436 transitions. [2020-10-14 08:57:50,659 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1436 transitions. Word has length 118 [2020-10-14 08:57:50,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:57:50,659 INFO L479 AbstractCegarLoop]: Abstraction has 966 states and 1436 transitions. [2020-10-14 08:57:50,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:57:50,659 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1436 transitions. [2020-10-14 08:57:50,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 08:57:50,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:57:50,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:57:50,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 08:57:50,662 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:57:50,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:57:50,662 INFO L82 PathProgramCache]: Analyzing trace with hash 230000915, now seen corresponding path program 1 times [2020-10-14 08:57:50,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:57:50,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718961942] [2020-10-14 08:57:50,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:57:50,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:50,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:50,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:50,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:50,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:50,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:50,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:51,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:51,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:53,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:53,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:53,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:53,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:55,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:55,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:57:55,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 08:57:55,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:57:55,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-14 08:57:55,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:57:55,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:57:55,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:57:55,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 08:57:55,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 08:57:55,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:57:55,994 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-14 08:57:55,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:57:55,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:56,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:56,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:57:56,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:57:56,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:57:56,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:57:56,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:57:56,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:57:56,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:57:56,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:57:56,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:57:56,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:57:56,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:57:56,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718961942] [2020-10-14 08:57:56,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:57:56,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:57:56,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362619307] [2020-10-14 08:57:56,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:57:56,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:57:56,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:57:56,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:57:56,043 INFO L87 Difference]: Start difference. First operand 966 states and 1436 transitions. Second operand 6 states. [2020-10-14 08:57:56,293 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-14 08:57:57,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:57:57,378 INFO L93 Difference]: Finished difference Result 2511 states and 3806 transitions. [2020-10-14 08:57:57,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:57:57,379 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2020-10-14 08:57:57,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:57:57,387 INFO L225 Difference]: With dead ends: 2511 [2020-10-14 08:57:57,388 INFO L226 Difference]: Without dead ends: 1816 [2020-10-14 08:57:57,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:57:57,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1816 states. [2020-10-14 08:57:57,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1816 to 1522. [2020-10-14 08:57:57,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1522 states. [2020-10-14 08:57:57,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 2298 transitions. [2020-10-14 08:57:57,500 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 2298 transitions. Word has length 118 [2020-10-14 08:57:57,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:57:57,501 INFO L479 AbstractCegarLoop]: Abstraction has 1522 states and 2298 transitions. [2020-10-14 08:57:57,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:57:57,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 2298 transitions. [2020-10-14 08:57:57,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 08:57:57,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:57:57,505 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:57:57,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 08:57:57,505 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:57:57,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:57:57,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1573806333, now seen corresponding path program 1 times [2020-10-14 08:57:57,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:57:57,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379483769] [2020-10-14 08:57:57,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:57:57,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:57,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:57,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:57,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:57,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:57,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:58,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:58,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:58,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:58,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:58,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:59,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:59,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:02,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:02,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 08:58:02,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:58:02,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 08:58:02,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:02,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:02,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:58:02,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:58:02,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 08:58:02,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:58:02,786 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-14 08:58:02,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:58:02,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:02,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:02,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:02,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:58:02,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:58:02,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 08:58:02,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:02,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:02,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:58:02,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:58:02,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:58:02,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:58:02,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:58:02,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379483769] [2020-10-14 08:58:02,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:58:02,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:58:02,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261345869] [2020-10-14 08:58:02,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:58:02,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:58:02,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:58:02,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:58:02,838 INFO L87 Difference]: Start difference. First operand 1522 states and 2298 transitions. Second operand 6 states. [2020-10-14 08:58:03,084 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-14 08:58:03,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:58:03,854 INFO L93 Difference]: Finished difference Result 2967 states and 4514 transitions. [2020-10-14 08:58:03,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:58:03,854 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2020-10-14 08:58:03,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:58:03,861 INFO L225 Difference]: With dead ends: 2967 [2020-10-14 08:58:03,861 INFO L226 Difference]: Without dead ends: 1522 [2020-10-14 08:58:03,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:58:03,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2020-10-14 08:58:03,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 1522. [2020-10-14 08:58:03,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1522 states. [2020-10-14 08:58:03,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 2281 transitions. [2020-10-14 08:58:03,960 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 2281 transitions. Word has length 118 [2020-10-14 08:58:03,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:58:03,960 INFO L479 AbstractCegarLoop]: Abstraction has 1522 states and 2281 transitions. [2020-10-14 08:58:03,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:58:03,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 2281 transitions. [2020-10-14 08:58:03,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-14 08:58:03,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:58:03,963 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:58:03,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 08:58:03,963 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:58:03,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:58:03,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1225453197, now seen corresponding path program 1 times [2020-10-14 08:58:03,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:58:03,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817746763] [2020-10-14 08:58:03,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:58:03,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:04,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:04,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:04,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:04,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:04,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:04,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:04,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:04,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:07,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:07,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:07,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:07,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:08,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:08,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:08,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:08,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 08:58:08,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:58:08,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 08:58:08,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:08,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:08,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:58:08,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 08:58:08,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 08:58:08,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:58:09,240 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-14 08:58:09,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:58:09,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:09,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:09,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:09,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:58:09,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:58:09,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:58:09,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:09,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:09,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:58:09,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:58:09,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:58:09,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:58:09,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:58:09,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817746763] [2020-10-14 08:58:09,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:58:09,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:58:09,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413553949] [2020-10-14 08:58:09,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:58:09,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:58:09,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:58:09,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:58:09,273 INFO L87 Difference]: Start difference. First operand 1522 states and 2281 transitions. Second operand 6 states. [2020-10-14 08:58:09,515 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-14 08:58:10,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:58:10,338 INFO L93 Difference]: Finished difference Result 3261 states and 4920 transitions. [2020-10-14 08:58:10,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:58:10,338 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2020-10-14 08:58:10,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:58:10,348 INFO L225 Difference]: With dead ends: 3261 [2020-10-14 08:58:10,348 INFO L226 Difference]: Without dead ends: 2096 [2020-10-14 08:58:10,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:58:10,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2096 states. [2020-10-14 08:58:10,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2096 to 1760. [2020-10-14 08:58:10,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1760 states. [2020-10-14 08:58:10,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1760 states to 1760 states and 2645 transitions. [2020-10-14 08:58:10,465 INFO L78 Accepts]: Start accepts. Automaton has 1760 states and 2645 transitions. Word has length 119 [2020-10-14 08:58:10,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:58:10,465 INFO L479 AbstractCegarLoop]: Abstraction has 1760 states and 2645 transitions. [2020-10-14 08:58:10,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:58:10,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states and 2645 transitions. [2020-10-14 08:58:10,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-14 08:58:10,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:58:10,468 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:58:10,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 08:58:10,468 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:58:10,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:58:10,469 INFO L82 PathProgramCache]: Analyzing trace with hash -169645518, now seen corresponding path program 1 times [2020-10-14 08:58:10,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:58:10,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617252162] [2020-10-14 08:58:10,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:58:10,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:10,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:10,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:10,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:10,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:10,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:11,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:11,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:11,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:11,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:15,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:15,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 08:58:15,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:58:15,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 08:58:15,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:15,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:15,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:58:15,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-14 08:58:15,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 08:58:15,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:58:15,721 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-14 08:58:15,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:58:15,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:15,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:15,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:15,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:58:15,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:58:15,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:58:15,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:15,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:15,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:58:15,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:58:15,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:58:15,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:58:15,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:58:15,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617252162] [2020-10-14 08:58:15,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:58:15,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:58:15,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125301018] [2020-10-14 08:58:15,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:58:15,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:58:15,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:58:15,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:58:15,754 INFO L87 Difference]: Start difference. First operand 1760 states and 2645 transitions. Second operand 4 states. [2020-10-14 08:58:15,970 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 08:58:16,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:58:16,714 INFO L93 Difference]: Finished difference Result 3397 states and 5153 transitions. [2020-10-14 08:58:16,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:58:16,715 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2020-10-14 08:58:16,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:58:16,723 INFO L225 Difference]: With dead ends: 3397 [2020-10-14 08:58:16,723 INFO L226 Difference]: Without dead ends: 1997 [2020-10-14 08:58:16,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:58:16,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2020-10-14 08:58:16,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1995. [2020-10-14 08:58:16,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1995 states. [2020-10-14 08:58:16,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 3000 transitions. [2020-10-14 08:58:16,844 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 3000 transitions. Word has length 119 [2020-10-14 08:58:16,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:58:16,845 INFO L479 AbstractCegarLoop]: Abstraction has 1995 states and 3000 transitions. [2020-10-14 08:58:16,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:58:16,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 3000 transitions. [2020-10-14 08:58:16,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-14 08:58:16,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:58:16,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:58:16,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 08:58:16,847 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:58:16,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:58:16,848 INFO L82 PathProgramCache]: Analyzing trace with hash -410863245, now seen corresponding path program 1 times [2020-10-14 08:58:16,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:58:16,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696743595] [2020-10-14 08:58:16,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:58:16,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:16,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:16,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:16,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:17,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:17,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:17,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:17,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:17,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:20,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:20,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:20,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:20,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:21,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:21,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 08:58:21,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:58:21,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 08:58:21,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:21,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:21,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:58:21,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-14 08:58:21,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:58:21,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:58:22,084 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-14 08:58:22,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:58:22,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:22,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:22,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:22,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:58:22,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:58:22,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:58:22,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:22,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:22,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:58:22,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:58:22,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:58:22,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:58:22,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:58:22,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696743595] [2020-10-14 08:58:22,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:58:22,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:58:22,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62502925] [2020-10-14 08:58:22,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:58:22,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:58:22,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:58:22,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:58:22,119 INFO L87 Difference]: Start difference. First operand 1995 states and 3000 transitions. Second operand 4 states. [2020-10-14 08:58:23,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:58:23,188 INFO L93 Difference]: Finished difference Result 5130 states and 7759 transitions. [2020-10-14 08:58:23,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:58:23,189 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2020-10-14 08:58:23,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:58:23,201 INFO L225 Difference]: With dead ends: 5130 [2020-10-14 08:58:23,201 INFO L226 Difference]: Without dead ends: 3495 [2020-10-14 08:58:23,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:58:23,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3495 states. [2020-10-14 08:58:23,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3495 to 3493. [2020-10-14 08:58:23,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3493 states. [2020-10-14 08:58:23,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3493 states to 3493 states and 5221 transitions. [2020-10-14 08:58:23,408 INFO L78 Accepts]: Start accepts. Automaton has 3493 states and 5221 transitions. Word has length 119 [2020-10-14 08:58:23,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:58:23,409 INFO L479 AbstractCegarLoop]: Abstraction has 3493 states and 5221 transitions. [2020-10-14 08:58:23,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:58:23,409 INFO L276 IsEmpty]: Start isEmpty. Operand 3493 states and 5221 transitions. [2020-10-14 08:58:23,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-14 08:58:23,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:58:23,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:58:23,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 08:58:23,412 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:58:23,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:58:23,412 INFO L82 PathProgramCache]: Analyzing trace with hash 451810873, now seen corresponding path program 1 times [2020-10-14 08:58:23,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:58:23,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [222617698] [2020-10-14 08:58:23,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:58:23,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:23,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:23,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:23,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:23,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:23,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:23,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:23,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:24,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:27,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:27,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:27,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:27,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:27,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:28,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:28,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:28,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 08:58:28,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:58:28,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:58:28,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:28,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:28,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:58:28,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 08:58:28,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 08:58:28,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:58:28,679 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-14 08:58:28,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:58:28,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:28,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:28,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:28,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:58:28,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:58:28,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:58:28,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:28,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:28,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:58:28,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:58:28,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:58:28,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:58:28,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:58:28,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [222617698] [2020-10-14 08:58:28,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:58:28,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:58:28,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056275704] [2020-10-14 08:58:28,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:58:28,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:58:28,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:58:28,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:58:28,716 INFO L87 Difference]: Start difference. First operand 3493 states and 5221 transitions. Second operand 6 states. [2020-10-14 08:58:28,963 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-14 08:58:30,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:58:30,166 INFO L93 Difference]: Finished difference Result 7571 states and 11333 transitions. [2020-10-14 08:58:30,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:58:30,176 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2020-10-14 08:58:30,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:58:30,193 INFO L225 Difference]: With dead ends: 7571 [2020-10-14 08:58:30,193 INFO L226 Difference]: Without dead ends: 4438 [2020-10-14 08:58:30,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:58:30,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4438 states. [2020-10-14 08:58:30,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4438 to 3942. [2020-10-14 08:58:30,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3942 states. [2020-10-14 08:58:30,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3942 states to 3942 states and 5898 transitions. [2020-10-14 08:58:30,430 INFO L78 Accepts]: Start accepts. Automaton has 3942 states and 5898 transitions. Word has length 119 [2020-10-14 08:58:30,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:58:30,430 INFO L479 AbstractCegarLoop]: Abstraction has 3942 states and 5898 transitions. [2020-10-14 08:58:30,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:58:30,431 INFO L276 IsEmpty]: Start isEmpty. Operand 3942 states and 5898 transitions. [2020-10-14 08:58:30,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-14 08:58:30,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:58:30,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:58:30,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 08:58:30,434 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:58:30,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:58:30,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1038398722, now seen corresponding path program 1 times [2020-10-14 08:58:30,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:58:30,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891294113] [2020-10-14 08:58:30,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:58:30,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:30,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:30,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:30,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:30,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:30,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:30,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:31,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:31,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:34,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:34,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:34,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:34,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:34,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:35,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:35,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:35,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 08:58:35,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:58:35,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 08:58:35,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:35,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:35,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:58:35,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 08:58:35,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 08:58:35,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:58:35,715 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-14 08:58:35,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:58:35,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:35,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:35,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:35,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:58:35,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:58:35,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:58:35,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:35,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:35,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:58:35,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:58:35,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:58:35,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:58:35,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:58:35,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891294113] [2020-10-14 08:58:35,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:58:35,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:58:35,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232505511] [2020-10-14 08:58:35,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:58:35,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:58:35,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:58:35,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:58:35,747 INFO L87 Difference]: Start difference. First operand 3942 states and 5898 transitions. Second operand 6 states. [2020-10-14 08:58:35,997 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-14 08:58:37,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:58:37,172 INFO L93 Difference]: Finished difference Result 8627 states and 12914 transitions. [2020-10-14 08:58:37,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:58:37,172 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2020-10-14 08:58:37,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:58:37,190 INFO L225 Difference]: With dead ends: 8627 [2020-10-14 08:58:37,190 INFO L226 Difference]: Without dead ends: 5045 [2020-10-14 08:58:37,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:58:37,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5045 states. [2020-10-14 08:58:37,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5045 to 4409. [2020-10-14 08:58:37,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4409 states. [2020-10-14 08:58:37,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4409 states to 4409 states and 6602 transitions. [2020-10-14 08:58:37,451 INFO L78 Accepts]: Start accepts. Automaton has 4409 states and 6602 transitions. Word has length 119 [2020-10-14 08:58:37,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:58:37,451 INFO L479 AbstractCegarLoop]: Abstraction has 4409 states and 6602 transitions. [2020-10-14 08:58:37,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:58:37,451 INFO L276 IsEmpty]: Start isEmpty. Operand 4409 states and 6602 transitions. [2020-10-14 08:58:37,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-14 08:58:37,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:58:37,453 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:58:37,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 08:58:37,454 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:58:37,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:58:37,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1566150292, now seen corresponding path program 1 times [2020-10-14 08:58:37,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:58:37,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572525703] [2020-10-14 08:58:37,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:58:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:37,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:37,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:37,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:37,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:37,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:37,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:38,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:38,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:41,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:41,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:41,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:41,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:41,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:41,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:42,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:42,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:42,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 08:58:42,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 08:58:42,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:58:42,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:42,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:42,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:58:42,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 08:58:42,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 08:58:42,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:58:42,717 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-14 08:58:42,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:58:42,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:42,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:42,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:42,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:58:42,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:58:42,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:58:42,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:42,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:42,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:58:42,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:58:42,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:58:42,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:58:42,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:58:42,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572525703] [2020-10-14 08:58:42,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:58:42,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:58:42,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171402384] [2020-10-14 08:58:42,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:58:42,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:58:42,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:58:42,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:58:42,748 INFO L87 Difference]: Start difference. First operand 4409 states and 6602 transitions. Second operand 6 states. [2020-10-14 08:58:42,990 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-14 08:58:44,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:58:44,258 INFO L93 Difference]: Finished difference Result 9833 states and 14723 transitions. [2020-10-14 08:58:44,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:58:44,258 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2020-10-14 08:58:44,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:58:44,273 INFO L225 Difference]: With dead ends: 9833 [2020-10-14 08:58:44,274 INFO L226 Difference]: Without dead ends: 5802 [2020-10-14 08:58:44,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:58:44,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5802 states. [2020-10-14 08:58:44,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5802 to 4906. [2020-10-14 08:58:44,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4906 states. [2020-10-14 08:58:44,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4906 states to 4906 states and 7354 transitions. [2020-10-14 08:58:44,511 INFO L78 Accepts]: Start accepts. Automaton has 4906 states and 7354 transitions. Word has length 119 [2020-10-14 08:58:44,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:58:44,512 INFO L479 AbstractCegarLoop]: Abstraction has 4906 states and 7354 transitions. [2020-10-14 08:58:44,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:58:44,512 INFO L276 IsEmpty]: Start isEmpty. Operand 4906 states and 7354 transitions. [2020-10-14 08:58:44,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-14 08:58:44,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:58:44,514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:58:44,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 08:58:44,515 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:58:44,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:58:44,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1437851807, now seen corresponding path program 1 times [2020-10-14 08:58:44,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:58:44,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761370906] [2020-10-14 08:58:44,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:58:44,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:44,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:44,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:44,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:44,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:44,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:44,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:45,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:45,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:45,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:45,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:45,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:49,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:49,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 08:58:49,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:58:49,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:58:49,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:49,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:49,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:58:49,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:58:49,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 08:58:49,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:58:49,810 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-14 08:58:49,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:58:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:49,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:49,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:49,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:58:49,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:58:49,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 08:58:49,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:49,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:49,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:58:49,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:58:49,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:58:49,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:58:49,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:58:49,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761370906] [2020-10-14 08:58:49,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:58:49,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:58:49,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31865684] [2020-10-14 08:58:49,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:58:49,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:58:49,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:58:49,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:58:49,873 INFO L87 Difference]: Start difference. First operand 4906 states and 7354 transitions. Second operand 6 states. [2020-10-14 08:58:50,120 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 08:58:51,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:58:51,437 INFO L93 Difference]: Finished difference Result 14414 states and 21658 transitions. [2020-10-14 08:58:51,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:58:51,438 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2020-10-14 08:58:51,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:58:51,464 INFO L225 Difference]: With dead ends: 14414 [2020-10-14 08:58:51,464 INFO L226 Difference]: Without dead ends: 9577 [2020-10-14 08:58:51,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 08:58:51,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9577 states. [2020-10-14 08:58:52,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9577 to 9575. [2020-10-14 08:58:52,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9575 states. [2020-10-14 08:58:52,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9575 states to 9575 states and 14313 transitions. [2020-10-14 08:58:52,098 INFO L78 Accepts]: Start accepts. Automaton has 9575 states and 14313 transitions. Word has length 119 [2020-10-14 08:58:52,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:58:52,098 INFO L479 AbstractCegarLoop]: Abstraction has 9575 states and 14313 transitions. [2020-10-14 08:58:52,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:58:52,098 INFO L276 IsEmpty]: Start isEmpty. Operand 9575 states and 14313 transitions. [2020-10-14 08:58:52,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-14 08:58:52,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:58:52,101 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:58:52,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 08:58:52,101 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:58:52,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:58:52,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1070996230, now seen corresponding path program 1 times [2020-10-14 08:58:52,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:58:52,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545983394] [2020-10-14 08:58:52,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:58:52,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:52,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:52,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:52,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:52,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:52,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:52,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:53,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:53,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:55,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:55,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:55,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:55,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:55,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:57,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:57,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 08:58:57,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:58:57,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:58:57,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:57,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:57,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:58:57,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 08:58:57,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 08:58:57,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:58:57,368 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-14 08:58:57,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:58:57,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:57,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:57,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:57,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:58:57,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:58:57,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:58:57,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:57,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:57,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:58:57,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:58:57,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:58:57,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:58:57,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:58:57,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545983394] [2020-10-14 08:58:57,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:58:57,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:58:57,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665466990] [2020-10-14 08:58:57,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:58:57,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:58:57,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:58:57,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:58:57,402 INFO L87 Difference]: Start difference. First operand 9575 states and 14313 transitions. Second operand 6 states. [2020-10-14 08:58:57,656 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-14 08:58:59,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:58:59,175 INFO L93 Difference]: Finished difference Result 21848 states and 32580 transitions. [2020-10-14 08:58:59,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:58:59,176 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2020-10-14 08:58:59,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:58:59,198 INFO L225 Difference]: With dead ends: 21848 [2020-10-14 08:58:59,198 INFO L226 Difference]: Without dead ends: 12950 [2020-10-14 08:58:59,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:58:59,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12950 states. [2020-10-14 08:58:59,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12950 to 10525. [2020-10-14 08:58:59,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10525 states. [2020-10-14 08:58:59,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10525 states to 10525 states and 15740 transitions. [2020-10-14 08:58:59,922 INFO L78 Accepts]: Start accepts. Automaton has 10525 states and 15740 transitions. Word has length 120 [2020-10-14 08:58:59,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:58:59,923 INFO L479 AbstractCegarLoop]: Abstraction has 10525 states and 15740 transitions. [2020-10-14 08:58:59,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:58:59,923 INFO L276 IsEmpty]: Start isEmpty. Operand 10525 states and 15740 transitions. [2020-10-14 08:58:59,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-14 08:58:59,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:58:59,927 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:58:59,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 08:58:59,927 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:58:59,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:58:59,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1430830754, now seen corresponding path program 1 times [2020-10-14 08:58:59,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:58:59,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717382998] [2020-10-14 08:58:59,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:58:59,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:59,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:59,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:00,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:00,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:00,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:00,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:00,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:00,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:01,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:01,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:01,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:01,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:02,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:02,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:02,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:03,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:03,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:03,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:04,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:04,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 08:59:04,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 08:59:04,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 08:59:04,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:04,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:04,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:59:04,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:59:04,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 08:59:04,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:59:05,205 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-14 08:59:05,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:59:05,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:59:05,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:05,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:05,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:59:05,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:59:05,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 08:59:05,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:05,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:05,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:59:05,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:59:05,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:59:05,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:59:05,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:59:05,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717382998] [2020-10-14 08:59:05,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:59:05,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:59:05,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186446383] [2020-10-14 08:59:05,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:59:05,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:59:05,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:59:05,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:59:05,247 INFO L87 Difference]: Start difference. First operand 10525 states and 15740 transitions. Second operand 6 states. [2020-10-14 08:59:05,507 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-14 08:59:07,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:59:07,357 INFO L93 Difference]: Finished difference Result 23944 states and 35781 transitions. [2020-10-14 08:59:07,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:59:07,358 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2020-10-14 08:59:07,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:59:07,386 INFO L225 Difference]: With dead ends: 23944 [2020-10-14 08:59:07,386 INFO L226 Difference]: Without dead ends: 17134 [2020-10-14 08:59:07,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:59:07,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17134 states. [2020-10-14 08:59:08,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17134 to 13871. [2020-10-14 08:59:08,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13871 states. [2020-10-14 08:59:08,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13871 states to 13871 states and 20623 transitions. [2020-10-14 08:59:08,347 INFO L78 Accepts]: Start accepts. Automaton has 13871 states and 20623 transitions. Word has length 121 [2020-10-14 08:59:08,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:59:08,347 INFO L479 AbstractCegarLoop]: Abstraction has 13871 states and 20623 transitions. [2020-10-14 08:59:08,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:59:08,348 INFO L276 IsEmpty]: Start isEmpty. Operand 13871 states and 20623 transitions. [2020-10-14 08:59:08,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-14 08:59:08,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:59:08,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:59:08,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 08:59:08,353 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:59:08,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:59:08,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1179918259, now seen corresponding path program 1 times [2020-10-14 08:59:08,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:59:08,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303972409] [2020-10-14 08:59:08,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:59:08,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:59:08,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:08,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:08,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:08,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:08,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:10,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:10,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:10,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:10,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:11,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:11,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:13,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:13,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 08:59:13,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:59:13,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 08:59:13,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:13,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:13,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:59:13,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:59:13,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 08:59:13,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:59:13,638 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-14 08:59:13,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:59:13,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:59:13,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:13,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:13,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:59:13,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:59:13,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 08:59:13,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:13,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:13,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:59:13,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:59:13,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:59:13,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:59:13,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:59:13,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303972409] [2020-10-14 08:59:13,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:59:13,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:59:13,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999799041] [2020-10-14 08:59:13,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:59:13,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:59:13,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:59:13,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:59:13,680 INFO L87 Difference]: Start difference. First operand 13871 states and 20623 transitions. Second operand 6 states. [2020-10-14 08:59:13,922 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 08:59:15,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:59:15,546 INFO L93 Difference]: Finished difference Result 26891 states and 39961 transitions. [2020-10-14 08:59:15,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:59:15,547 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2020-10-14 08:59:15,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:59:15,564 INFO L225 Difference]: With dead ends: 26891 [2020-10-14 08:59:15,564 INFO L226 Difference]: Without dead ends: 13499 [2020-10-14 08:59:15,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 08:59:15,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13499 states. [2020-10-14 08:59:16,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13499 to 13497. [2020-10-14 08:59:16,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13497 states. [2020-10-14 08:59:16,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13497 states to 13497 states and 20032 transitions. [2020-10-14 08:59:16,627 INFO L78 Accepts]: Start accepts. Automaton has 13497 states and 20032 transitions. Word has length 121 [2020-10-14 08:59:16,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:59:16,627 INFO L479 AbstractCegarLoop]: Abstraction has 13497 states and 20032 transitions. [2020-10-14 08:59:16,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:59:16,627 INFO L276 IsEmpty]: Start isEmpty. Operand 13497 states and 20032 transitions. [2020-10-14 08:59:16,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 08:59:16,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:59:16,631 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:59:16,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 08:59:16,631 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:59:16,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:59:16,632 INFO L82 PathProgramCache]: Analyzing trace with hash 326063880, now seen corresponding path program 1 times [2020-10-14 08:59:16,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:59:16,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089547191] [2020-10-14 08:59:16,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:59:16,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:59:16,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:16,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:16,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:16,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:16,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:17,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:19,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:19,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:19,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:19,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:19,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:19,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:20,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:21,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:21,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 08:59:21,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:59:21,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 08:59:21,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:21,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:21,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:59:21,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-14 08:59:21,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 08:59:21,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:59:21,899 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-14 08:59:21,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:59:21,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:59:21,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:21,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:21,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:59:21,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:59:21,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:59:21,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:21,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:21,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:59:21,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:59:21,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:59:21,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:59:21,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:59:21,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1089547191] [2020-10-14 08:59:21,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:59:21,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:59:21,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844518203] [2020-10-14 08:59:21,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:59:21,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:59:21,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:59:21,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:59:21,935 INFO L87 Difference]: Start difference. First operand 13497 states and 20032 transitions. Second operand 5 states. [2020-10-14 08:59:24,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:59:24,422 INFO L93 Difference]: Finished difference Result 22211 states and 32937 transitions. [2020-10-14 08:59:24,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 08:59:24,423 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-14 08:59:24,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:59:24,450 INFO L225 Difference]: With dead ends: 22211 [2020-10-14 08:59:24,450 INFO L226 Difference]: Without dead ends: 22209 [2020-10-14 08:59:24,458 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:59:24,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22209 states. [2020-10-14 08:59:25,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22209 to 13513. [2020-10-14 08:59:25,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13513 states. [2020-10-14 08:59:25,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13513 states to 13513 states and 19976 transitions. [2020-10-14 08:59:25,624 INFO L78 Accepts]: Start accepts. Automaton has 13513 states and 19976 transitions. Word has length 122 [2020-10-14 08:59:25,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:59:25,624 INFO L479 AbstractCegarLoop]: Abstraction has 13513 states and 19976 transitions. [2020-10-14 08:59:25,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:59:25,624 INFO L276 IsEmpty]: Start isEmpty. Operand 13513 states and 19976 transitions. [2020-10-14 08:59:25,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 08:59:25,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:59:25,627 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:59:25,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 08:59:25,627 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:59:25,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:59:25,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1670946436, now seen corresponding path program 1 times [2020-10-14 08:59:25,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:59:25,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302668890] [2020-10-14 08:59:25,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:59:25,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:59:25,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:25,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:25,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:25,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:26,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:26,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:28,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:28,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:28,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:28,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:28,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:30,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:30,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:30,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:30,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:30,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 08:59:30,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:59:30,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 08:59:30,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:30,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:30,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:59:30,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:59:30,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 08:59:30,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:59:31,219 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-14 08:59:31,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:59:31,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:59:31,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:31,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:31,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:59:31,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:59:31,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:59:31,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:31,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:31,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:59:31,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:59:31,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:59:31,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:59:31,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:59:31,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302668890] [2020-10-14 08:59:31,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:59:31,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:59:31,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567401404] [2020-10-14 08:59:31,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:59:31,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:59:31,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:59:31,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:59:31,263 INFO L87 Difference]: Start difference. First operand 13513 states and 19976 transitions. Second operand 9 states. [2020-10-14 08:59:31,543 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-14 08:59:36,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:59:36,276 INFO L93 Difference]: Finished difference Result 40053 states and 59070 transitions. [2020-10-14 08:59:36,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 08:59:36,277 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 122 [2020-10-14 08:59:36,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:59:36,305 INFO L225 Difference]: With dead ends: 40053 [2020-10-14 08:59:36,305 INFO L226 Difference]: Without dead ends: 27019 [2020-10-14 08:59:36,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2020-10-14 08:59:36,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27019 states. [2020-10-14 08:59:37,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27019 to 13513. [2020-10-14 08:59:37,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13513 states. [2020-10-14 08:59:37,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13513 states to 13513 states and 19952 transitions. [2020-10-14 08:59:37,770 INFO L78 Accepts]: Start accepts. Automaton has 13513 states and 19952 transitions. Word has length 122 [2020-10-14 08:59:37,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:59:37,770 INFO L479 AbstractCegarLoop]: Abstraction has 13513 states and 19952 transitions. [2020-10-14 08:59:37,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:59:37,771 INFO L276 IsEmpty]: Start isEmpty. Operand 13513 states and 19952 transitions. [2020-10-14 08:59:37,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-14 08:59:37,773 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:59:37,773 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:59:37,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 08:59:37,773 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:59:37,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:59:37,773 INFO L82 PathProgramCache]: Analyzing trace with hash -140717366, now seen corresponding path program 1 times [2020-10-14 08:59:37,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:59:37,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80900513] [2020-10-14 08:59:37,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:59:37,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:59:37,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:37,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:37,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:38,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:38,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:39,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:39,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:39,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:39,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:39,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:40,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:40,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:40,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:40,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:40,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:41,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:42,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:42,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:42,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 08:59:42,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 08:59:42,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:59:42,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:42,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:42,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 08:59:42,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:59:42,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 08:59:42,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:59:43,166 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-14 08:59:43,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:59:43,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:59:43,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:43,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:43,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:59:43,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:59:43,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 08:59:43,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:43,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:43,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:59:43,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:59:43,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:59:43,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:59:43,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:59:43,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80900513] [2020-10-14 08:59:43,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:59:43,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:59:43,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115636899] [2020-10-14 08:59:43,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 08:59:43,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:59:43,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 08:59:43,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-14 08:59:43,240 INFO L87 Difference]: Start difference. First operand 13513 states and 19952 transitions. Second operand 11 states. [2020-10-14 08:59:43,529 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-14 08:59:48,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:59:48,051 INFO L93 Difference]: Finished difference Result 40248 states and 59306 transitions. [2020-10-14 08:59:48,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 08:59:48,051 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 123 [2020-10-14 08:59:48,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:59:48,077 INFO L225 Difference]: With dead ends: 40248 [2020-10-14 08:59:48,077 INFO L226 Difference]: Without dead ends: 27094 [2020-10-14 08:59:48,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2020-10-14 08:59:48,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27094 states. [2020-10-14 08:59:49,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27094 to 13513. [2020-10-14 08:59:49,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13513 states. [2020-10-14 08:59:49,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13513 states to 13513 states and 19932 transitions. [2020-10-14 08:59:49,649 INFO L78 Accepts]: Start accepts. Automaton has 13513 states and 19932 transitions. Word has length 123 [2020-10-14 08:59:49,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:59:49,649 INFO L479 AbstractCegarLoop]: Abstraction has 13513 states and 19932 transitions. [2020-10-14 08:59:49,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 08:59:49,650 INFO L276 IsEmpty]: Start isEmpty. Operand 13513 states and 19932 transitions. [2020-10-14 08:59:49,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-14 08:59:49,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:59:49,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:59:49,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 08:59:49,652 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:59:49,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:59:49,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1188196874, now seen corresponding path program 1 times [2020-10-14 08:59:49,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:59:49,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378526758] [2020-10-14 08:59:49,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:59:49,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:59:49,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:49,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:49,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:49,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:50,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:50,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:52,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:52,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:52,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:53,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:53,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:54,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:54,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 08:59:54,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:59:54,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-14 08:59:54,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:54,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:54,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:59:54,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:59:54,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 08:59:54,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:59:55,186 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-14 08:59:55,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:59:55,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:59:55,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:55,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:55,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:59:55,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:59:55,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:59:55,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:55,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:55,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:59:55,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:59:55,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:59:55,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:59:55,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:59:55,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378526758] [2020-10-14 08:59:55,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:59:55,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:59:55,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326723039] [2020-10-14 08:59:55,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:59:55,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:59:55,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:59:55,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:59:55,231 INFO L87 Difference]: Start difference. First operand 13513 states and 19932 transitions. Second operand 10 states. [2020-10-14 08:59:55,495 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-14 09:00:00,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:00:00,433 INFO L93 Difference]: Finished difference Result 39746 states and 58727 transitions. [2020-10-14 09:00:00,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 09:00:00,435 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 123 [2020-10-14 09:00:00,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:00:00,464 INFO L225 Difference]: With dead ends: 39746 [2020-10-14 09:00:00,464 INFO L226 Difference]: Without dead ends: 26680 [2020-10-14 09:00:00,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2020-10-14 09:00:00,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26680 states. [2020-10-14 09:00:02,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26680 to 13485. [2020-10-14 09:00:02,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13485 states. [2020-10-14 09:00:02,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13485 states to 13485 states and 19876 transitions. [2020-10-14 09:00:02,540 INFO L78 Accepts]: Start accepts. Automaton has 13485 states and 19876 transitions. Word has length 123 [2020-10-14 09:00:02,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:00:02,540 INFO L479 AbstractCegarLoop]: Abstraction has 13485 states and 19876 transitions. [2020-10-14 09:00:02,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 09:00:02,540 INFO L276 IsEmpty]: Start isEmpty. Operand 13485 states and 19876 transitions. [2020-10-14 09:00:02,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-14 09:00:02,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:00:02,542 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:00:02,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 09:00:02,542 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:00:02,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:00:02,543 INFO L82 PathProgramCache]: Analyzing trace with hash 543884602, now seen corresponding path program 1 times [2020-10-14 09:00:02,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:00:02,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872705209] [2020-10-14 09:00:02,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:00:02,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:00:02,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:02,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:02,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:02,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:04,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:04,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:04,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:04,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:05,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:06,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:06,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:06,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:06,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:07,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:07,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:07,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:00:07,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 09:00:07,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 09:00:07,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 09:00:07,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:00:07,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:00:07,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 09:00:07,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:00:07,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 09:00:07,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:00:07,904 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-14 09:00:07,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:00:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:00:07,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:07,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:00:07,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:00:07,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:00:07,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:00:07,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:00:07,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:00:07,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:00:07,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:00:07,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:00:07,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:00:07,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:00:07,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872705209] [2020-10-14 09:00:07,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:00:07,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 09:00:07,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657661360] [2020-10-14 09:00:07,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 09:00:07,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:00:07,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 09:00:07,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:00:07,954 INFO L87 Difference]: Start difference. First operand 13485 states and 19876 transitions. Second operand 11 states. [2020-10-14 09:00:08,241 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-14 09:00:10,290 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2020-10-14 09:00:13,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:00:13,859 INFO L93 Difference]: Finished difference Result 40272 states and 59274 transitions. [2020-10-14 09:00:13,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 09:00:13,860 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 124 [2020-10-14 09:00:13,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:00:13,884 INFO L225 Difference]: With dead ends: 40272 [2020-10-14 09:00:13,884 INFO L226 Difference]: Without dead ends: 27077 [2020-10-14 09:00:13,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2020-10-14 09:00:13,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27077 states. [2020-10-14 09:00:16,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27077 to 13485. [2020-10-14 09:00:16,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13485 states. [2020-10-14 09:00:16,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13485 states to 13485 states and 19861 transitions. [2020-10-14 09:00:16,118 INFO L78 Accepts]: Start accepts. Automaton has 13485 states and 19861 transitions. Word has length 124 [2020-10-14 09:00:16,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:00:16,119 INFO L479 AbstractCegarLoop]: Abstraction has 13485 states and 19861 transitions. [2020-10-14 09:00:16,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 09:00:16,119 INFO L276 IsEmpty]: Start isEmpty. Operand 13485 states and 19861 transitions. [2020-10-14 09:00:16,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-14 09:00:16,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:00:16,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:00:16,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 09:00:16,121 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:00:16,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:00:16,121 INFO L82 PathProgramCache]: Analyzing trace with hash -321320537, now seen corresponding path program 1 times [2020-10-14 09:00:16,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:00:16,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202214528] [2020-10-14 09:00:16,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:00:16,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:00:16,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:16,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:16,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:16,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:16,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:20,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:20,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:21,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:21,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:00:21,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 09:00:21,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:00:21,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 09:00:21,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:00:21,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:00:21,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 09:00:21,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:00:21,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 09:00:21,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:00:21,569 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-14 09:00:21,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:00:21,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:00:21,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:21,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:00:21,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:00:21,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:00:21,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:00:21,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:00:21,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:00:21,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:00:21,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:00:21,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:00:21,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:00:21,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:00:21,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202214528] [2020-10-14 09:00:21,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:00:21,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 09:00:21,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137202061] [2020-10-14 09:00:21,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 09:00:21,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:00:21,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 09:00:21,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:00:21,614 INFO L87 Difference]: Start difference. First operand 13485 states and 19861 transitions. Second operand 10 states. [2020-10-14 09:00:21,862 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-14 09:00:27,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:00:27,807 INFO L93 Difference]: Finished difference Result 39701 states and 58625 transitions. [2020-10-14 09:00:27,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 09:00:27,807 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 124 [2020-10-14 09:00:27,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:00:27,831 INFO L225 Difference]: With dead ends: 39701 [2020-10-14 09:00:27,831 INFO L226 Difference]: Without dead ends: 26595 [2020-10-14 09:00:27,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2020-10-14 09:00:27,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26595 states. [2020-10-14 09:00:30,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26595 to 13426. [2020-10-14 09:00:30,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13426 states. [2020-10-14 09:00:30,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13426 states to 13426 states and 19772 transitions. [2020-10-14 09:00:30,414 INFO L78 Accepts]: Start accepts. Automaton has 13426 states and 19772 transitions. Word has length 124 [2020-10-14 09:00:30,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:00:30,414 INFO L479 AbstractCegarLoop]: Abstraction has 13426 states and 19772 transitions. [2020-10-14 09:00:30,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 09:00:30,415 INFO L276 IsEmpty]: Start isEmpty. Operand 13426 states and 19772 transitions. [2020-10-14 09:00:30,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-14 09:00:30,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:00:30,416 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:00:30,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 09:00:30,417 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:00:30,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:00:30,417 INFO L82 PathProgramCache]: Analyzing trace with hash 996580692, now seen corresponding path program 1 times [2020-10-14 09:00:30,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:00:30,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [418647434] [2020-10-14 09:00:30,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:00:30,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:00:30,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:30,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:30,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:31,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:31,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:31,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:32,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:32,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:32,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:33,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:33,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:33,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:34,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:35,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:00:35,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 09:00:35,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 09:00:35,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 09:00:35,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:00:35,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:00:35,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 09:00:35,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:00:35,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 09:00:35,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:00:35,812 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-14 09:00:35,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:00:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:00:35,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:35,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:00:35,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:00:35,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:00:35,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:00:35,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:00:35,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:00:35,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:00:35,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:00:35,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:00:35,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:00:35,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:00:35,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [418647434] [2020-10-14 09:00:35,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:00:35,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 09:00:35,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336371757] [2020-10-14 09:00:35,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 09:00:35,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:00:35,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 09:00:35,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:00:35,864 INFO L87 Difference]: Start difference. First operand 13426 states and 19772 transitions. Second operand 11 states. [2020-10-14 09:00:36,166 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-14 09:00:41,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:00:41,706 INFO L93 Difference]: Finished difference Result 33321 states and 49073 transitions. [2020-10-14 09:00:41,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 09:00:41,707 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 125 [2020-10-14 09:00:41,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:00:41,730 INFO L225 Difference]: With dead ends: 33321 [2020-10-14 09:00:41,730 INFO L226 Difference]: Without dead ends: 20152 [2020-10-14 09:00:41,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2020-10-14 09:00:41,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20152 states. [2020-10-14 09:00:44,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20152 to 13426. [2020-10-14 09:00:44,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13426 states. [2020-10-14 09:00:44,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13426 states to 13426 states and 19763 transitions. [2020-10-14 09:00:44,451 INFO L78 Accepts]: Start accepts. Automaton has 13426 states and 19763 transitions. Word has length 125 [2020-10-14 09:00:44,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:00:44,452 INFO L479 AbstractCegarLoop]: Abstraction has 13426 states and 19763 transitions. [2020-10-14 09:00:44,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 09:00:44,452 INFO L276 IsEmpty]: Start isEmpty. Operand 13426 states and 19763 transitions. [2020-10-14 09:00:44,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-14 09:00:44,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:00:44,455 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:00:44,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 09:00:44,455 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:00:44,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:00:44,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1460581610, now seen corresponding path program 1 times [2020-10-14 09:00:44,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:00:44,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023805974] [2020-10-14 09:00:44,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:00:44,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:00:44,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:44,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:44,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:44,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:45,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:45,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:49,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:00:49,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 09:00:49,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 09:00:49,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 09:00:49,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:00:49,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:00:49,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 09:00:49,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:00:49,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 09:00:49,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:00:49,695 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 25 [2020-10-14 09:00:49,932 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-14 09:00:49,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:00:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:00:49,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:00:49,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:00:49,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:00:49,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:00:49,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:00:49,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:00:49,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:00:49,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:00:49,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:00:49,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:00:49,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:00:49,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:00:49,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023805974] [2020-10-14 09:00:49,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:00:49,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 09:00:49,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633555271] [2020-10-14 09:00:49,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 09:00:49,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:00:49,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 09:00:49,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:00:49,977 INFO L87 Difference]: Start difference. First operand 13426 states and 19763 transitions. Second operand 10 states. [2020-10-14 09:00:50,242 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-14 09:00:55,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:00:55,861 INFO L93 Difference]: Finished difference Result 33005 states and 48716 transitions. [2020-10-14 09:00:55,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 09:00:55,861 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 125 [2020-10-14 09:00:55,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:00:55,881 INFO L225 Difference]: With dead ends: 33005 [2020-10-14 09:00:55,881 INFO L226 Difference]: Without dead ends: 19875 [2020-10-14 09:00:55,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2020-10-14 09:00:55,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19875 states. [2020-10-14 09:00:58,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19875 to 13325. [2020-10-14 09:00:58,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13325 states. [2020-10-14 09:00:59,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13325 states to 13325 states and 19629 transitions. [2020-10-14 09:00:59,013 INFO L78 Accepts]: Start accepts. Automaton has 13325 states and 19629 transitions. Word has length 125 [2020-10-14 09:00:59,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:00:59,013 INFO L479 AbstractCegarLoop]: Abstraction has 13325 states and 19629 transitions. [2020-10-14 09:00:59,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 09:00:59,013 INFO L276 IsEmpty]: Start isEmpty. Operand 13325 states and 19629 transitions. [2020-10-14 09:00:59,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-14 09:00:59,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:00:59,015 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:00:59,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 09:00:59,015 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:00:59,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:00:59,015 INFO L82 PathProgramCache]: Analyzing trace with hash -68025724, now seen corresponding path program 1 times [2020-10-14 09:00:59,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:00:59,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [740068280] [2020-10-14 09:00:59,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:00:59,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat