/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/reducercommutativity/avg60-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 02:12:30,629 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 02:12:30,632 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 02:12:30,674 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 02:12:30,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 02:12:30,684 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 02:12:30,686 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 02:12:30,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 02:12:30,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 02:12:30,694 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 02:12:30,697 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 02:12:30,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 02:12:30,699 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 02:12:30,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 02:12:30,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 02:12:30,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 02:12:30,708 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 02:12:30,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 02:12:30,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 02:12:30,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 02:12:30,721 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 02:12:30,722 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 02:12:30,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 02:12:30,724 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 02:12:30,731 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 02:12:30,731 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 02:12:30,731 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 02:12:30,735 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 02:12:30,735 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 02:12:30,736 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 02:12:30,736 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 02:12:30,737 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 02:12:30,738 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 02:12:30,738 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 02:12:30,739 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 02:12:30,740 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 02:12:30,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 02:12:30,741 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 02:12:30,741 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 02:12:30,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 02:12:30,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 02:12:30,744 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 02:12:30,785 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 02:12:30,785 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 02:12:30,787 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 02:12:30,788 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 02:12:30,788 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 02:12:30,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 02:12:30,789 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 02:12:30,789 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 02:12:30,789 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 02:12:30,789 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 02:12:30,790 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 02:12:30,791 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 02:12:30,791 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 02:12:30,791 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 02:12:30,792 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 02:12:30,792 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 02:12:30,792 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 02:12:30,792 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 02:12:30,792 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 02:12:30,793 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 02:12:30,793 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 02:12:30,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 02:12:30,793 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 02:12:30,793 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 02:12:30,793 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 02:12:30,794 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 02:12:30,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 02:12:30,794 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 02:12:30,794 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 02:12:30,794 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 02:12:31,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 02:12:31,130 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 02:12:31,134 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 02:12:31,136 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 02:12:31,136 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 02:12:31,137 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/avg60-1.i [2020-10-15 02:12:31,208 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b374c7246/ad5901375b964020a02b54a242da9f2c/FLAG0ab69e10a [2020-10-15 02:12:31,700 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 02:12:31,701 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/avg60-1.i [2020-10-15 02:12:31,709 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b374c7246/ad5901375b964020a02b54a242da9f2c/FLAG0ab69e10a [2020-10-15 02:12:32,087 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b374c7246/ad5901375b964020a02b54a242da9f2c [2020-10-15 02:12:32,098 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 02:12:32,100 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 02:12:32,101 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 02:12:32,102 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 02:12:32,105 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 02:12:32,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:12:32" (1/1) ... [2020-10-15 02:12:32,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aa43bf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:32, skipping insertion in model container [2020-10-15 02:12:32,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:12:32" (1/1) ... [2020-10-15 02:12:32,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 02:12:32,136 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 02:12:32,359 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:12:32,372 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 02:12:32,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:12:32,440 INFO L208 MainTranslator]: Completed translation [2020-10-15 02:12:32,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:32 WrapperNode [2020-10-15 02:12:32,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 02:12:32,443 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 02:12:32,444 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 02:12:32,444 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 02:12:32,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:32" (1/1) ... [2020-10-15 02:12:32,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:32" (1/1) ... [2020-10-15 02:12:32,569 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:32" (1/1) ... [2020-10-15 02:12:32,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:32" (1/1) ... [2020-10-15 02:12:32,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:32" (1/1) ... [2020-10-15 02:12:32,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:32" (1/1) ... [2020-10-15 02:12:32,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:32" (1/1) ... [2020-10-15 02:12:32,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 02:12:32,590 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 02:12:32,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 02:12:32,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 02:12:32,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 02:12:32,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 02:12:32,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 02:12:32,665 INFO L138 BoogieDeclarations]: Found implementation of procedure avg [2020-10-15 02:12:32,665 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 02:12:32,665 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 02:12:32,665 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 02:12:32,665 INFO L130 BoogieDeclarations]: Found specification of procedure avg [2020-10-15 02:12:32,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 02:12:32,666 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 02:12:32,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 02:12:32,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 02:12:32,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 02:12:32,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 02:12:32,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 02:12:32,991 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 02:12:32,992 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-15 02:12:33,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:12:33 BoogieIcfgContainer [2020-10-15 02:12:33,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 02:12:33,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 02:12:33,008 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 02:12:33,024 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 02:12:33,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:12:32" (1/3) ... [2020-10-15 02:12:33,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61140887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:12:33, skipping insertion in model container [2020-10-15 02:12:33,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:12:32" (2/3) ... [2020-10-15 02:12:33,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61140887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:12:33, skipping insertion in model container [2020-10-15 02:12:33,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:12:33" (3/3) ... [2020-10-15 02:12:33,035 INFO L109 eAbstractionObserver]: Analyzing ICFG avg60-1.i [2020-10-15 02:12:33,057 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 02:12:33,067 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 02:12:33,080 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 02:12:33,101 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 02:12:33,102 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 02:12:33,102 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 02:12:33,102 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 02:12:33,102 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 02:12:33,103 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 02:12:33,103 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 02:12:33,103 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 02:12:33,122 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-15 02:12:33,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-15 02:12:33,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:12:33,130 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:12:33,131 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:12:33,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:12:33,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1283808693, now seen corresponding path program 1 times [2020-10-15 02:12:33,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:12:33,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169506852] [2020-10-15 02:12:33,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:12:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:33,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:33,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:33,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:33,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:33,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:34,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:35,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:35,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-15 02:12:35,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:12:35,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1748 [2020-10-15 02:12:35,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:35,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:35,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 02:12:35,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:12:35,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 02:12:35,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 02:12:35,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:12:35,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:35,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:35,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:35,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:12:35,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:35,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 02:12:35,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:35,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:35,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:12:35,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:12:35,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:12:35,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:35,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:12:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:35,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:35,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:35,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:35,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:12:35,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:12:35,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-15 02:12:35,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:35,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:35,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:12:35,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:12:35,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 02:12:35,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:35,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-15 02:12:35,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:35,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:35,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:35,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:35,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:12:35,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:12:35,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-15 02:12:35,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:35,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:35,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:12:35,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:12:35,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 02:12:35,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:35,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-15 02:12:35,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:35,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:35,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:35,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:35,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:12:35,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:12:35,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-15 02:12:35,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:35,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:35,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:12:35,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:12:35,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 02:12:35,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 02:12:35,758 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-15 02:12:35,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169506852] [2020-10-15 02:12:35,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:12:35,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 02:12:35,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411598963] [2020-10-15 02:12:35,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 02:12:35,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:12:35,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 02:12:35,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:12:35,794 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 11 states. [2020-10-15 02:12:36,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:12:36,215 INFO L93 Difference]: Finished difference Result 83 states and 120 transitions. [2020-10-15 02:12:36,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 02:12:36,218 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-15 02:12:36,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:12:36,230 INFO L225 Difference]: With dead ends: 83 [2020-10-15 02:12:36,230 INFO L226 Difference]: Without dead ends: 50 [2020-10-15 02:12:36,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-10-15 02:12:36,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-15 02:12:36,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 37. [2020-10-15 02:12:36,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-15 02:12:36,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2020-10-15 02:12:36,294 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 32 [2020-10-15 02:12:36,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:12:36,294 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2020-10-15 02:12:36,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 02:12:36,295 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2020-10-15 02:12:36,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-15 02:12:36,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:12:36,299 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:12:36,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 02:12:36,299 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:12:36,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:12:36,300 INFO L82 PathProgramCache]: Analyzing trace with hash -883673527, now seen corresponding path program 1 times [2020-10-15 02:12:36,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:12:36,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1966981200] [2020-10-15 02:12:36,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:12:36,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:36,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:36,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:36,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:36,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:36,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:37,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:37,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-15 02:12:37,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:12:37,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1313 [2020-10-15 02:12:37,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:37,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:37,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:12:37,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-15 02:12:37,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 02:12:37,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:37,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:12:37,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:37,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:37,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:37,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:12:37,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:37,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:12:37,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:37,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:37,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:12:37,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:12:37,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:12:37,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:37,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:12:37,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:37,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:37,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:37,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:37,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:12:37,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:12:37,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-15 02:12:37,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:37,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:37,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:12:37,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:12:37,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 02:12:37,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:37,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-15 02:12:37,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:37,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:37,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:37,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:37,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:12:37,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:12:37,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 02:12:37,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:37,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:37,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:12:37,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:12:37,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 02:12:37,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:37,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-15 02:12:37,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:37,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:37,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:37,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-15 02:12:37,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:37,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-15 02:12:37,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:37,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:37,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:12:37,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:12:37,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 02:12:37,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:37,781 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-15 02:12:37,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1966981200] [2020-10-15 02:12:37,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:12:37,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 02:12:37,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159490910] [2020-10-15 02:12:37,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:12:37,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:12:37,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:12:37,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:12:37,786 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand 5 states. [2020-10-15 02:12:37,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:12:37,891 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2020-10-15 02:12:37,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:12:37,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-15 02:12:37,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:12:37,893 INFO L225 Difference]: With dead ends: 58 [2020-10-15 02:12:37,893 INFO L226 Difference]: Without dead ends: 30 [2020-10-15 02:12:37,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 02:12:37,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-15 02:12:37,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-15 02:12:37,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-15 02:12:37,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-15 02:12:37,902 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 34 [2020-10-15 02:12:37,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:12:37,902 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-15 02:12:37,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:12:37,903 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-15 02:12:37,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-15 02:12:37,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:12:37,904 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:12:37,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 02:12:37,905 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:12:37,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:12:37,906 INFO L82 PathProgramCache]: Analyzing trace with hash -919236729, now seen corresponding path program 2 times [2020-10-15 02:12:37,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:12:37,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619463867] [2020-10-15 02:12:37,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:12:37,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:37,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:37,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:37,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:37,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:38,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:42,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:42,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-15 02:12:42,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:12:42,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 02:12:42,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:42,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:42,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:12:42,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-15 02:12:42,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 02:12:42,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:42,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:12:42,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:42,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:42,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:42,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:12:42,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:42,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:12:42,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:42,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:42,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:12:42,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:12:42,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:12:42,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:42,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:12:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:42,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:42,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:43,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:43,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 02:12:43,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:12:43,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-15 02:12:43,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:43,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:43,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:12:43,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:12:43,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 02:12:43,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:43,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 02:12:43,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:43,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:43,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:43,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:43,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 02:12:43,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:12:43,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-15 02:12:43,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:43,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:43,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:12:43,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:12:43,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 02:12:43,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:43,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-15 02:12:43,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:43,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:43,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:43,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 02:12:43,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:43,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-15 02:12:43,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:43,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:43,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:12:43,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:12:43,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 02:12:43,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:43,158 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-15 02:12:43,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [619463867] [2020-10-15 02:12:43,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:12:43,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-15 02:12:43,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296608507] [2020-10-15 02:12:43,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 02:12:43,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:12:43,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 02:12:43,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:12:43,163 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 6 states. [2020-10-15 02:12:43,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:12:43,307 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-10-15 02:12:43,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 02:12:43,308 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-10-15 02:12:43,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:12:43,310 INFO L225 Difference]: With dead ends: 52 [2020-10-15 02:12:43,310 INFO L226 Difference]: Without dead ends: 32 [2020-10-15 02:12:43,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-15 02:12:43,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-15 02:12:43,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-15 02:12:43,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-15 02:12:43,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-15 02:12:43,325 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 44 [2020-10-15 02:12:43,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:12:43,325 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-15 02:12:43,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 02:12:43,326 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-15 02:12:43,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-15 02:12:43,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:12:43,330 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:12:43,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 02:12:43,331 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:12:43,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:12:43,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1824311803, now seen corresponding path program 3 times [2020-10-15 02:12:43,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:12:43,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938834307] [2020-10-15 02:12:43,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:12:43,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:43,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:43,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:43,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:43,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:44,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:48,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:48,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-15 02:12:48,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:12:48,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 02:12:48,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:48,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:48,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:12:48,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-15 02:12:48,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:12:48,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:48,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:12:48,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:48,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:48,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:48,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:12:48,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:48,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 02:12:48,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:48,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:48,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:12:48,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:12:48,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:12:48,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 02:12:48,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:12:48,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:48,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:48,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:48,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:48,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 02:12:48,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:12:48,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-15 02:12:48,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:48,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:48,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:12:48,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:12:48,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:12:48,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:48,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-15 02:12:48,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:48,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:48,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:48,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 02:12:48,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:48,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-15 02:12:48,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:48,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:48,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:12:48,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:12:48,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:12:48,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:48,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-15 02:12:48,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:48,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:48,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:48,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:48,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 02:12:48,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:12:48,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-15 02:12:48,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:48,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:48,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:12:48,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:12:48,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:12:48,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:48,595 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 27 proven. 54 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-15 02:12:48,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938834307] [2020-10-15 02:12:48,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:12:48,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-15 02:12:48,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136710017] [2020-10-15 02:12:48,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 02:12:48,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:12:48,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 02:12:48,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 02:12:48,599 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 7 states. [2020-10-15 02:12:48,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:12:48,741 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-15 02:12:48,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 02:12:48,741 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-10-15 02:12:48,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:12:48,742 INFO L225 Difference]: With dead ends: 56 [2020-10-15 02:12:48,743 INFO L226 Difference]: Without dead ends: 34 [2020-10-15 02:12:48,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:12:48,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-15 02:12:48,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-15 02:12:48,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-15 02:12:48,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-15 02:12:48,750 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 50 [2020-10-15 02:12:48,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:12:48,750 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-15 02:12:48,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 02:12:48,751 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-15 02:12:48,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-15 02:12:48,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:12:48,753 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:12:48,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 02:12:48,753 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:12:48,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:12:48,753 INFO L82 PathProgramCache]: Analyzing trace with hash 79349251, now seen corresponding path program 4 times [2020-10-15 02:12:48,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:12:48,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [987613781] [2020-10-15 02:12:48,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:12:48,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:48,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:48,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:48,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:48,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:50,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:53,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:53,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-15 02:12:53,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:12:53,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-15 02:12:53,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:53,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:53,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:12:53,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-15 02:12:53,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 02:12:53,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:53,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:12:53,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:53,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:53,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:53,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:12:53,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:53,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:12:53,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:53,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:53,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:12:53,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:12:53,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:12:53,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:53,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:12:53,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:53,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:53,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:53,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:53,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 02:12:53,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:12:53,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-15 02:12:53,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:53,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:53,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:12:53,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:12:53,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 02:12:53,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:53,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-15 02:12:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:53,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:53,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:53,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:53,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 02:12:53,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:12:53,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-15 02:12:53,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:53,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:53,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:12:53,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:12:53,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 02:12:53,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:53,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-15 02:12:53,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:53,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:54,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:54,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 02:12:54,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:54,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-15 02:12:54,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:54,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:54,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:12:54,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:12:54,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 02:12:54,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:54,018 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 48 proven. 96 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-15 02:12:54,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [987613781] [2020-10-15 02:12:54,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:12:54,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 02:12:54,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662151363] [2020-10-15 02:12:54,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 02:12:54,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:12:54,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 02:12:54,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-15 02:12:54,021 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 8 states. [2020-10-15 02:12:54,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:12:54,212 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-10-15 02:12:54,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 02:12:54,212 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-10-15 02:12:54,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:12:54,213 INFO L225 Difference]: With dead ends: 60 [2020-10-15 02:12:54,213 INFO L226 Difference]: Without dead ends: 36 [2020-10-15 02:12:54,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-15 02:12:54,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-15 02:12:54,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-15 02:12:54,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-15 02:12:54,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-15 02:12:54,220 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 56 [2020-10-15 02:12:54,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:12:54,221 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-15 02:12:54,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 02:12:54,221 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-15 02:12:54,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-15 02:12:54,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:12:54,222 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:12:54,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 02:12:54,223 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:12:54,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:12:54,223 INFO L82 PathProgramCache]: Analyzing trace with hash -754016383, now seen corresponding path program 5 times [2020-10-15 02:12:54,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:12:54,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362353881] [2020-10-15 02:12:54,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:12:54,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:54,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:54,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:54,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:54,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:59,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:59,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:59,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 02:12:59,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:12:59,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-15 02:12:59,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:59,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:59,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 02:12:59,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:12:59,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 02:12:59,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:59,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:12:59,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:59,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:59,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:59,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:12:59,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:59,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:12:59,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:59,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:59,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:12:59,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:12:59,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:12:59,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:59,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:12:59,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:59,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:59,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:59,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-15 02:12:59,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:12:59,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-15 02:12:59,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:59,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:59,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 02:12:59,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:12:59,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 02:12:59,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:59,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-15 02:12:59,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:59,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:59,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:59,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:59,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-15 02:12:59,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:12:59,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-15 02:12:59,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:59,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:59,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 02:12:59,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:12:59,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 02:12:59,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:59,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-15 02:12:59,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:59,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:59,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:59,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:12:59,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-15 02:12:59,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:12:59,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-15 02:12:59,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:12:59,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:12:59,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 02:12:59,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:12:59,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 02:12:59,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:12:59,543 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 75 proven. 150 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-15 02:12:59,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [362353881] [2020-10-15 02:12:59,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:12:59,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 02:12:59,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24806244] [2020-10-15 02:12:59,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 02:12:59,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:12:59,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 02:12:59,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-15 02:12:59,551 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 9 states. [2020-10-15 02:12:59,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:12:59,782 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2020-10-15 02:12:59,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 02:12:59,783 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-10-15 02:12:59,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:12:59,784 INFO L225 Difference]: With dead ends: 64 [2020-10-15 02:12:59,784 INFO L226 Difference]: Without dead ends: 38 [2020-10-15 02:12:59,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-15 02:12:59,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-15 02:12:59,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-15 02:12:59,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-15 02:12:59,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-15 02:12:59,798 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 62 [2020-10-15 02:12:59,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:12:59,798 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-15 02:12:59,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 02:12:59,798 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-15 02:12:59,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 02:12:59,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:12:59,800 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:12:59,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 02:12:59,801 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:12:59,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:12:59,805 INFO L82 PathProgramCache]: Analyzing trace with hash 2026447487, now seen corresponding path program 6 times [2020-10-15 02:12:59,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:12:59,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765457814] [2020-10-15 02:12:59,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:12:59,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:12:59,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:59,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:59,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:12:59,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:04,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:04,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 02:13:04,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:13:04,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 02:13:04,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:04,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:04,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:13:04,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:13:04,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 02:13:04,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:04,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:04,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:04,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:04,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:04,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:04,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:13:04,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:04,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:04,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:04,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:04,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:04,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:04,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:13:04,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:04,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:04,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:04,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 02:13:04,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:04,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-15 02:13:04,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:04,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:04,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:13:04,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:04,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 02:13:04,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:04,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 02:13:04,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:04,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:04,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:05,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:05,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 02:13:05,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:05,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-15 02:13:05,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:05,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:05,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:13:05,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:05,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 02:13:05,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:05,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-15 02:13:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:05,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:05,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:05,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:05,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 02:13:05,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:05,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-15 02:13:05,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:05,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:05,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:13:05,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:05,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 02:13:05,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:05,127 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 108 proven. 216 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-15 02:13:05,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765457814] [2020-10-15 02:13:05,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:05,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-15 02:13:05,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304574484] [2020-10-15 02:13:05,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 02:13:05,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:05,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 02:13:05,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-15 02:13:05,131 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 10 states. [2020-10-15 02:13:05,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:05,328 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-10-15 02:13:05,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 02:13:05,328 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-10-15 02:13:05,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:05,329 INFO L225 Difference]: With dead ends: 68 [2020-10-15 02:13:05,329 INFO L226 Difference]: Without dead ends: 40 [2020-10-15 02:13:05,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-15 02:13:05,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-15 02:13:05,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-15 02:13:05,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-15 02:13:05,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-15 02:13:05,336 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 68 [2020-10-15 02:13:05,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:05,336 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-15 02:13:05,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 02:13:05,336 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-15 02:13:05,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-15 02:13:05,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:05,338 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:13:05,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 02:13:05,338 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:05,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:05,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1267511037, now seen corresponding path program 7 times [2020-10-15 02:13:05,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:05,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373371579] [2020-10-15 02:13:05,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:05,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:05,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:05,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:05,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:10,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:10,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-15 02:13:10,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:13:10,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 02:13:10,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:10,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:10,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:13:10,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-15 02:13:10,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 02:13:10,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:10,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:10,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:10,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:10,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:10,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:10,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:13:10,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:10,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:10,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:10,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:10,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:10,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:10,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:13:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:10,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:10,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:10,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:10,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-15 02:13:10,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:10,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-15 02:13:10,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:10,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:10,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:13:10,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:10,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 02:13:10,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:10,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-15 02:13:10,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:10,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:10,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:10,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-15 02:13:10,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:10,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-15 02:13:10,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:10,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:10,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:13:10,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:10,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 02:13:10,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:10,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-15 02:13:10,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:10,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:10,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:10,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:10,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-15 02:13:10,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:10,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-15 02:13:10,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:10,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:10,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:13:10,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:10,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 02:13:10,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:10,662 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 147 proven. 294 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-15 02:13:10,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373371579] [2020-10-15 02:13:10,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:10,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 02:13:10,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685807949] [2020-10-15 02:13:10,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 02:13:10,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:10,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 02:13:10,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:13:10,667 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 11 states. [2020-10-15 02:13:10,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:10,871 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-10-15 02:13:10,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 02:13:10,871 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 74 [2020-10-15 02:13:10,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:10,872 INFO L225 Difference]: With dead ends: 72 [2020-10-15 02:13:10,873 INFO L226 Difference]: Without dead ends: 42 [2020-10-15 02:13:10,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-15 02:13:10,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-15 02:13:10,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-15 02:13:10,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-15 02:13:10,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-15 02:13:10,887 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 74 [2020-10-15 02:13:10,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:10,888 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-15 02:13:10,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 02:13:10,888 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-15 02:13:10,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-15 02:13:10,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:10,891 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:13:10,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 02:13:10,892 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:10,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:10,892 INFO L82 PathProgramCache]: Analyzing trace with hash 303277307, now seen corresponding path program 8 times [2020-10-15 02:13:10,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:10,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750560167] [2020-10-15 02:13:10,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:10,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:10,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:10,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:10,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:10,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:15,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:15,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-15 02:13:15,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:13:15,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 02:13:15,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:15,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:15,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 02:13:15,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-15 02:13:15,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 02:13:15,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:15,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:15,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:15,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:15,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:15,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:15,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:13:15,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:15,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:15,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:15,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:15,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:15,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:15,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:13:15,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:15,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:15,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:16,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:16,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 02:13:16,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:16,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-15 02:13:16,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:16,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:16,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 02:13:16,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:16,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 02:13:16,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:16,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-15 02:13:16,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:16,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:16,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:16,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 02:13:16,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:16,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-15 02:13:16,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:16,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:16,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 02:13:16,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:16,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 02:13:16,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:16,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-15 02:13:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:16,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:16,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:16,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:16,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 02:13:16,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:16,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-15 02:13:16,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:16,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:16,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 02:13:16,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:16,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 02:13:16,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:16,261 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 192 proven. 384 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-15 02:13:16,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750560167] [2020-10-15 02:13:16,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:16,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-15 02:13:16,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621437207] [2020-10-15 02:13:16,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 02:13:16,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:16,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 02:13:16,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-15 02:13:16,263 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 12 states. [2020-10-15 02:13:16,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:16,564 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-10-15 02:13:16,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 02:13:16,565 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 80 [2020-10-15 02:13:16,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:16,566 INFO L225 Difference]: With dead ends: 76 [2020-10-15 02:13:16,566 INFO L226 Difference]: Without dead ends: 44 [2020-10-15 02:13:16,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-15 02:13:16,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-15 02:13:16,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-15 02:13:16,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-15 02:13:16,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-15 02:13:16,573 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 80 [2020-10-15 02:13:16,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:16,573 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-15 02:13:16,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 02:13:16,573 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-15 02:13:16,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-15 02:13:16,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:16,574 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:13:16,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 02:13:16,575 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:16,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:16,575 INFO L82 PathProgramCache]: Analyzing trace with hash 439379065, now seen corresponding path program 9 times [2020-10-15 02:13:16,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:16,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969584452] [2020-10-15 02:13:16,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:16,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:16,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:16,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:16,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:21,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:21,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-15 02:13:21,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:13:21,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 02:13:21,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:21,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:21,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 02:13:21,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:13:21,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 02:13:21,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:21,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:21,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:21,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:21,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:21,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:21,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:21,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 02:13:21,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:21,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:21,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:21,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:21,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:21,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:21,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:13:21,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:21,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:21,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:21,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 02:13:21,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:21,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-15 02:13:21,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:21,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:21,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 02:13:21,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:21,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 02:13:21,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:21,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-15 02:13:21,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:21,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:21,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:21,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:21,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 02:13:21,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:21,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-15 02:13:21,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:21,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:21,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 02:13:21,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:21,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 02:13:21,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:21,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-15 02:13:21,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:21,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:21,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:21,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:21,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 02:13:21,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:21,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-15 02:13:21,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:21,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:21,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 02:13:21,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:21,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 02:13:21,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:21,922 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 243 proven. 486 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-15 02:13:21,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [969584452] [2020-10-15 02:13:21,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:21,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-15 02:13:21,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202015458] [2020-10-15 02:13:21,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 02:13:21,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:21,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 02:13:21,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-15 02:13:21,925 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 13 states. [2020-10-15 02:13:22,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:22,232 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-10-15 02:13:22,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 02:13:22,232 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 86 [2020-10-15 02:13:22,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:22,233 INFO L225 Difference]: With dead ends: 80 [2020-10-15 02:13:22,233 INFO L226 Difference]: Without dead ends: 46 [2020-10-15 02:13:22,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-15 02:13:22,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-15 02:13:22,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-15 02:13:22,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-15 02:13:22,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-15 02:13:22,239 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 86 [2020-10-15 02:13:22,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:22,240 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-15 02:13:22,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 02:13:22,240 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-15 02:13:22,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-15 02:13:22,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:22,241 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:13:22,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 02:13:22,241 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:22,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:22,242 INFO L82 PathProgramCache]: Analyzing trace with hash -825406089, now seen corresponding path program 10 times [2020-10-15 02:13:22,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:22,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187759868] [2020-10-15 02:13:22,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:22,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:22,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:22,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:22,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:22,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:27,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:27,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-15 02:13:27,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:13:27,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 02:13:27,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:27,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:27,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 02:13:27,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-15 02:13:27,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 02:13:27,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:27,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:27,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:27,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:27,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:27,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:27,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:27,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:13:27,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:27,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:27,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:27,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:27,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:27,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:27,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:13:27,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:27,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:27,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:27,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:27,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:27,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:27,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-15 02:13:27,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:27,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:27,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 02:13:27,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:27,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 02:13:27,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:27,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-15 02:13:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:27,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:27,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:27,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:27,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:27,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-15 02:13:27,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:27,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:27,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 02:13:27,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:27,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 02:13:27,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:27,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-15 02:13:27,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:27,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:27,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:27,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:27,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 02:13:27,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:27,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-15 02:13:27,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:27,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:27,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 02:13:27,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:27,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 02:13:27,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:27,637 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 300 proven. 600 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-15 02:13:27,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187759868] [2020-10-15 02:13:27,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:27,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-15 02:13:27,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445113915] [2020-10-15 02:13:27,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 02:13:27,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:27,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 02:13:27,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-15 02:13:27,639 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 14 states. [2020-10-15 02:13:27,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:27,997 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-10-15 02:13:27,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 02:13:27,998 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 92 [2020-10-15 02:13:27,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:27,999 INFO L225 Difference]: With dead ends: 84 [2020-10-15 02:13:27,999 INFO L226 Difference]: Without dead ends: 48 [2020-10-15 02:13:28,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-15 02:13:28,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-15 02:13:28,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-15 02:13:28,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-15 02:13:28,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-15 02:13:28,006 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 92 [2020-10-15 02:13:28,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:28,006 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-15 02:13:28,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 02:13:28,006 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-15 02:13:28,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-15 02:13:28,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:28,007 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:13:28,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 02:13:28,007 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:28,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:28,008 INFO L82 PathProgramCache]: Analyzing trace with hash -840122379, now seen corresponding path program 11 times [2020-10-15 02:13:28,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:28,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286156363] [2020-10-15 02:13:28,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:28,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:28,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:28,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:28,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:33,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:33,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-15 02:13:33,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:13:33,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 02:13:33,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:33,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:33,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 02:13:33,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-15 02:13:33,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 02:13:33,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:33,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:33,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:33,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:33,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:33,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:33,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:13:33,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:33,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:33,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:33,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:33,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:33,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:33,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:13:33,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:33,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:33,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:33,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:33,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-15 02:13:33,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:33,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-15 02:13:33,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:33,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:33,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 02:13:33,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:33,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 02:13:33,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:33,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-15 02:13:33,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:33,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:33,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:33,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-15 02:13:33,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:33,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-15 02:13:33,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:33,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:33,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 02:13:33,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:33,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 02:13:33,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:33,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-15 02:13:33,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:33,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:33,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:33,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:33,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-15 02:13:33,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:33,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-15 02:13:33,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:33,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:33,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 02:13:33,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:33,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 02:13:33,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:33,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 363 proven. 726 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-15 02:13:33,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286156363] [2020-10-15 02:13:33,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:33,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-15 02:13:33,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472734716] [2020-10-15 02:13:33,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 02:13:33,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:33,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 02:13:33,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-15 02:13:33,420 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 15 states. [2020-10-15 02:13:33,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:33,778 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2020-10-15 02:13:33,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 02:13:33,778 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 98 [2020-10-15 02:13:33,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:33,780 INFO L225 Difference]: With dead ends: 88 [2020-10-15 02:13:33,780 INFO L226 Difference]: Without dead ends: 50 [2020-10-15 02:13:33,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-15 02:13:33,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-15 02:13:33,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-15 02:13:33,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-15 02:13:33,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-15 02:13:33,787 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 98 [2020-10-15 02:13:33,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:33,787 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-15 02:13:33,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 02:13:33,788 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-15 02:13:33,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-15 02:13:33,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:33,789 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:13:33,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 02:13:33,789 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:33,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:33,790 INFO L82 PathProgramCache]: Analyzing trace with hash 2125011955, now seen corresponding path program 12 times [2020-10-15 02:13:33,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:33,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192292485] [2020-10-15 02:13:33,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:33,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:33,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:33,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:33,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:33,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:38,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:38,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-15 02:13:38,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:13:38,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-15 02:13:38,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:38,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:38,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 02:13:38,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:13:38,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 02:13:38,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:38,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:38,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:38,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:38,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:38,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:38,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:38,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:13:38,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:38,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:38,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:38,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:38,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:38,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:38,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:13:38,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:38,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:38,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:38,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-15 02:13:38,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:38,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-15 02:13:38,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:38,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:38,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 02:13:38,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:38,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 02:13:38,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:39,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-15 02:13:39,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:39,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:39,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:39,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:39,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-15 02:13:39,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:39,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-15 02:13:39,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:39,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:39,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 02:13:39,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:39,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 02:13:39,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:39,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-15 02:13:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:39,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:39,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:39,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:39,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-15 02:13:39,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:39,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-15 02:13:39,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:39,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:39,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 02:13:39,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:39,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 02:13:39,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:39,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 432 proven. 864 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-15 02:13:39,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [192292485] [2020-10-15 02:13:39,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:39,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-15 02:13:39,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611031230] [2020-10-15 02:13:39,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 02:13:39,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:39,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 02:13:39,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-15 02:13:39,299 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 16 states. [2020-10-15 02:13:39,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:39,714 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2020-10-15 02:13:39,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 02:13:39,714 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 104 [2020-10-15 02:13:39,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:39,716 INFO L225 Difference]: With dead ends: 92 [2020-10-15 02:13:39,716 INFO L226 Difference]: Without dead ends: 52 [2020-10-15 02:13:39,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-15 02:13:39,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-15 02:13:39,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-15 02:13:39,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-15 02:13:39,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-15 02:13:39,723 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 104 [2020-10-15 02:13:39,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:39,723 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-15 02:13:39,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 02:13:39,723 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-15 02:13:39,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-15 02:13:39,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:39,725 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:13:39,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 02:13:39,725 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:39,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:39,725 INFO L82 PathProgramCache]: Analyzing trace with hash 657768817, now seen corresponding path program 13 times [2020-10-15 02:13:39,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:39,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808766788] [2020-10-15 02:13:39,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:39,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:39,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:39,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:39,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:39,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:44,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:44,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-15 02:13:44,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:13:44,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 02:13:44,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:44,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:44,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 02:13:44,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-15 02:13:44,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 02:13:44,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:44,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:44,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:44,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:44,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:44,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:44,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:44,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:13:44,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:44,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:44,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:44,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:44,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:44,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:44,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:13:44,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:44,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:44,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:44,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:44,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-15 02:13:44,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:44,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-15 02:13:44,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:44,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:44,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 02:13:44,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:44,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 02:13:44,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:45,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-15 02:13:45,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:45,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:45,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:45,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-15 02:13:45,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:45,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-15 02:13:45,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:45,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:45,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 02:13:45,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:45,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 02:13:45,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:45,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-15 02:13:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:45,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:45,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:45,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:45,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-15 02:13:45,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:45,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-15 02:13:45,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:45,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:45,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 02:13:45,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:45,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 02:13:45,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:45,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1614 backedges. 507 proven. 1014 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-15 02:13:45,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808766788] [2020-10-15 02:13:45,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:45,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-15 02:13:45,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783198667] [2020-10-15 02:13:45,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 02:13:45,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:45,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 02:13:45,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-15 02:13:45,702 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 17 states. [2020-10-15 02:13:46,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:46,192 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2020-10-15 02:13:46,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 02:13:46,192 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 110 [2020-10-15 02:13:46,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:46,193 INFO L225 Difference]: With dead ends: 96 [2020-10-15 02:13:46,194 INFO L226 Difference]: Without dead ends: 54 [2020-10-15 02:13:46,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-15 02:13:46,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-15 02:13:46,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-15 02:13:46,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-15 02:13:46,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-15 02:13:46,201 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 110 [2020-10-15 02:13:46,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:46,201 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-15 02:13:46,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 02:13:46,202 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-15 02:13:46,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-15 02:13:46,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:46,203 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:13:46,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 02:13:46,203 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:46,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:46,203 INFO L82 PathProgramCache]: Analyzing trace with hash -2099638161, now seen corresponding path program 14 times [2020-10-15 02:13:46,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:46,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120215114] [2020-10-15 02:13:46,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:46,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:46,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:46,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:46,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:46,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:51,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:51,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-15 02:13:51,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:13:51,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-15 02:13:51,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:51,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:51,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 02:13:51,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-15 02:13:51,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 02:13:51,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:51,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:51,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:51,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:51,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:51,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:51,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:51,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:13:51,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:51,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:51,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:51,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:51,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:51,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:51,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:13:51,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:51,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:51,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:51,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:51,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-15 02:13:51,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:51,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-15 02:13:51,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:51,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:51,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 02:13:51,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:51,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 02:13:51,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:51,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-15 02:13:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:51,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:51,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:51,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-15 02:13:51,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:51,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-15 02:13:51,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:51,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:51,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 02:13:51,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:51,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 02:13:51,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:51,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-15 02:13:51,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:51,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:51,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:52,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:52,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-15 02:13:52,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:52,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-15 02:13:52,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:52,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:52,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 02:13:52,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:52,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 02:13:52,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:52,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 588 proven. 1176 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-15 02:13:52,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120215114] [2020-10-15 02:13:52,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:52,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-15 02:13:52,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211632644] [2020-10-15 02:13:52,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-15 02:13:52,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:52,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-15 02:13:52,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-15 02:13:52,068 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 18 states. [2020-10-15 02:13:52,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:52,515 INFO L93 Difference]: Finished difference Result 100 states and 110 transitions. [2020-10-15 02:13:52,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 02:13:52,516 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 116 [2020-10-15 02:13:52,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:52,517 INFO L225 Difference]: With dead ends: 100 [2020-10-15 02:13:52,517 INFO L226 Difference]: Without dead ends: 56 [2020-10-15 02:13:52,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-15 02:13:52,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-15 02:13:52,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-15 02:13:52,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-15 02:13:52,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-15 02:13:52,524 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 116 [2020-10-15 02:13:52,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:52,524 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-15 02:13:52,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-15 02:13:52,524 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-15 02:13:52,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-15 02:13:52,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:52,526 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:13:52,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 02:13:52,526 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:52,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:52,526 INFO L82 PathProgramCache]: Analyzing trace with hash -671389459, now seen corresponding path program 15 times [2020-10-15 02:13:52,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:52,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545772511] [2020-10-15 02:13:52,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:52,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:52,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:52,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:52,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:52,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:57,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:57,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-15 02:13:57,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:13:57,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 02:13:57,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:57,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:57,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 02:13:57,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-15 02:13:57,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 02:13:57,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:57,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:13:57,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:57,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:57,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:57,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:13:57,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:57,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:13:57,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:57,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:57,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:13:57,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:13:57,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:13:57,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:57,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:13:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:57,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:57,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:57,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:57,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-15 02:13:57,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:57,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-15 02:13:57,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:57,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:57,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 02:13:57,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:57,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 02:13:57,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:13:58,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-15 02:13:58,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:58,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:58,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:58,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-15 02:13:58,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:13:58,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-15 02:13:58,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:58,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:58,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 02:13:58,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:58,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 02:13:58,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:58,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-15 02:13:58,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:58,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:58,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:58,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:13:58,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-15 02:13:58,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:13:58,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-15 02:13:58,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:13:58,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:13:58,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 02:13:58,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:13:58,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 02:13:58,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:13:58,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2130 backedges. 675 proven. 1350 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-15 02:13:58,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545772511] [2020-10-15 02:13:58,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:13:58,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-15 02:13:58,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930383679] [2020-10-15 02:13:58,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 02:13:58,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:13:58,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 02:13:58,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-15 02:13:58,336 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 19 states. [2020-10-15 02:13:58,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:13:58,807 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2020-10-15 02:13:58,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 02:13:58,807 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 122 [2020-10-15 02:13:58,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:13:58,808 INFO L225 Difference]: With dead ends: 104 [2020-10-15 02:13:58,809 INFO L226 Difference]: Without dead ends: 58 [2020-10-15 02:13:58,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-15 02:13:58,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-15 02:13:58,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-15 02:13:58,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-15 02:13:58,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-15 02:13:58,817 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 122 [2020-10-15 02:13:58,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:13:58,817 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-15 02:13:58,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 02:13:58,817 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-15 02:13:58,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-15 02:13:58,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:13:58,819 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:13:58,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 02:13:58,819 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:13:58,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:13:58,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1911346453, now seen corresponding path program 16 times [2020-10-15 02:13:58,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:13:58,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473326916] [2020-10-15 02:13:58,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:13:58,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:13:58,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:58,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:58,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:13:58,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:03,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:03,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-15 02:14:03,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:14:03,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 02:14:03,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:03,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:03,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 02:14:03,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-15 02:14:03,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 02:14:03,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:03,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:14:03,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:03,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:03,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:03,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:14:03,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:03,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:14:03,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:03,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:03,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:14:03,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:14:03,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:14:03,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:03,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:14:03,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:03,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:03,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:03,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:03,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-15 02:14:03,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:03,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-15 02:14:03,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:03,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:03,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 02:14:03,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:03,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 02:14:03,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:04,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-15 02:14:04,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:04,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:04,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:04,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-15 02:14:04,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:04,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-15 02:14:04,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:04,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:04,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 02:14:04,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:04,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 02:14:04,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:04,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-15 02:14:04,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:04,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:04,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:04,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:04,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-15 02:14:04,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:04,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-15 02:14:04,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:04,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:04,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 02:14:04,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:04,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 02:14:04,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:04,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 768 proven. 1536 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-15 02:14:04,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473326916] [2020-10-15 02:14:04,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:14:04,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-15 02:14:04,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003776077] [2020-10-15 02:14:04,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 02:14:04,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:14:04,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 02:14:04,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-15 02:14:04,500 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 20 states. [2020-10-15 02:14:05,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:14:05,007 INFO L93 Difference]: Finished difference Result 108 states and 118 transitions. [2020-10-15 02:14:05,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 02:14:05,008 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 128 [2020-10-15 02:14:05,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:14:05,009 INFO L225 Difference]: With dead ends: 108 [2020-10-15 02:14:05,009 INFO L226 Difference]: Without dead ends: 60 [2020-10-15 02:14:05,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2020-10-15 02:14:05,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-15 02:14:05,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-15 02:14:05,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-15 02:14:05,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-15 02:14:05,016 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 128 [2020-10-15 02:14:05,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:14:05,016 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-15 02:14:05,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 02:14:05,017 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-15 02:14:05,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-15 02:14:05,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:14:05,018 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:14:05,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 02:14:05,018 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:14:05,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:14:05,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1135851113, now seen corresponding path program 17 times [2020-10-15 02:14:05,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:14:05,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [580114310] [2020-10-15 02:14:05,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:14:05,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:05,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:05,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:05,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:05,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:10,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:10,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-15 02:14:10,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:14:10,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-15 02:14:10,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:10,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:10,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 02:14:10,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-15 02:14:10,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 02:14:10,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:10,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:14:10,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:10,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:10,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:10,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:14:10,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:10,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:14:10,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:10,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:10,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:14:10,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:14:10,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:14:10,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:10,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:14:10,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:10,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:10,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:10,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:10,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-15 02:14:10,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:10,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-15 02:14:10,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:10,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:10,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 02:14:10,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:10,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 02:14:10,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:10,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-15 02:14:10,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:10,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:10,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:10,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-15 02:14:10,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:10,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-15 02:14:10,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:10,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:10,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 02:14:10,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:10,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 02:14:10,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:10,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-15 02:14:10,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:10,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:10,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:10,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:10,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-15 02:14:10,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:10,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-15 02:14:10,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:10,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:10,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 02:14:10,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:10,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 02:14:10,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:14:10,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2718 backedges. 867 proven. 1734 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-15 02:14:10,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [580114310] [2020-10-15 02:14:10,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:14:10,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-15 02:14:10,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229722103] [2020-10-15 02:14:10,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-15 02:14:10,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:14:10,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-15 02:14:10,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-15 02:14:10,810 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 21 states. [2020-10-15 02:14:11,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:14:11,371 INFO L93 Difference]: Finished difference Result 112 states and 122 transitions. [2020-10-15 02:14:11,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 02:14:11,371 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 134 [2020-10-15 02:14:11,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:14:11,372 INFO L225 Difference]: With dead ends: 112 [2020-10-15 02:14:11,373 INFO L226 Difference]: Without dead ends: 62 [2020-10-15 02:14:11,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 02:14:11,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-15 02:14:11,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-15 02:14:11,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-15 02:14:11,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-15 02:14:11,379 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 134 [2020-10-15 02:14:11,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:14:11,380 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-15 02:14:11,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-15 02:14:11,380 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-15 02:14:11,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-15 02:14:11,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:14:11,381 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:14:11,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 02:14:11,382 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:14:11,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:14:11,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1686596455, now seen corresponding path program 18 times [2020-10-15 02:14:11,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:14:11,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670567936] [2020-10-15 02:14:11,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:14:11,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:11,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:11,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:11,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:11,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:16,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:16,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-15 02:14:16,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:14:16,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-15 02:14:16,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:16,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:16,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 02:14:16,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:14:16,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 02:14:16,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:16,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:14:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:16,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:16,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:16,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:14:16,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:16,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:14:16,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:16,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:16,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:14:16,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:14:16,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:14:16,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:16,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:14:16,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:16,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:16,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:16,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-15 02:14:16,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:16,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-15 02:14:16,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:16,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:16,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 02:14:16,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:16,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 02:14:16,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:16,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-15 02:14:16,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:16,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:16,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:17,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:17,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-15 02:14:17,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:17,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-15 02:14:17,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:17,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:17,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 02:14:17,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:17,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 02:14:17,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:17,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-15 02:14:17,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:17,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:17,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:17,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:17,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-15 02:14:17,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:17,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-15 02:14:17,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:17,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:17,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 02:14:17,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:17,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 02:14:17,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:17,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3039 backedges. 972 proven. 1944 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-15 02:14:17,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670567936] [2020-10-15 02:14:17,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:14:17,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-15 02:14:17,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277266119] [2020-10-15 02:14:17,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-15 02:14:17,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:14:17,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-15 02:14:17,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-15 02:14:17,226 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 22 states. [2020-10-15 02:14:17,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:14:17,876 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2020-10-15 02:14:17,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-15 02:14:17,877 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 140 [2020-10-15 02:14:17,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:14:17,878 INFO L225 Difference]: With dead ends: 116 [2020-10-15 02:14:17,878 INFO L226 Difference]: Without dead ends: 64 [2020-10-15 02:14:17,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2020-10-15 02:14:17,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-15 02:14:17,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-15 02:14:17,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-15 02:14:17,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-15 02:14:17,891 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 140 [2020-10-15 02:14:17,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:14:17,891 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-15 02:14:17,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-15 02:14:17,891 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-15 02:14:17,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-15 02:14:17,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:14:17,898 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:14:17,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 02:14:17,898 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:14:17,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:14:17,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1062250981, now seen corresponding path program 19 times [2020-10-15 02:14:17,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:14:17,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617794738] [2020-10-15 02:14:17,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:14:17,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:17,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:17,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:17,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:17,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:22,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:22,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-15 02:14:22,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:14:22,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-15 02:14:22,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:22,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:22,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-15 02:14:22,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-15 02:14:22,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 02:14:22,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:22,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:14:22,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:22,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:22,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:22,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:14:22,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:22,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:14:22,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:22,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:22,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:14:22,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:14:22,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:14:22,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:22,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:14:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:22,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:22,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:23,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:23,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-15 02:14:23,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:23,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-15 02:14:23,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:23,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:23,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-15 02:14:23,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:23,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 02:14:23,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:23,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-15 02:14:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:23,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:23,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:23,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-15 02:14:23,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:23,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-15 02:14:23,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:23,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:23,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-15 02:14:23,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:23,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 02:14:23,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:23,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-15 02:14:23,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:23,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:23,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:23,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:23,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-15 02:14:23,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:23,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-15 02:14:23,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:23,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:23,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-15 02:14:23,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:23,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 02:14:23,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:23,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3378 backedges. 1083 proven. 2166 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-15 02:14:23,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617794738] [2020-10-15 02:14:23,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:14:23,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-15 02:14:23,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784823105] [2020-10-15 02:14:23,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-15 02:14:23,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:14:24,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-15 02:14:24,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-15 02:14:24,000 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 23 states. [2020-10-15 02:14:24,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:14:24,596 INFO L93 Difference]: Finished difference Result 120 states and 130 transitions. [2020-10-15 02:14:24,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 02:14:24,596 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 146 [2020-10-15 02:14:24,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:14:24,599 INFO L225 Difference]: With dead ends: 120 [2020-10-15 02:14:24,600 INFO L226 Difference]: Without dead ends: 66 [2020-10-15 02:14:24,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2020-10-15 02:14:24,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-15 02:14:24,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-15 02:14:24,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-15 02:14:24,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-15 02:14:24,610 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 146 [2020-10-15 02:14:24,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:14:24,610 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-15 02:14:24,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-15 02:14:24,611 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-15 02:14:24,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-15 02:14:24,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:14:24,612 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:14:24,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 02:14:24,617 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:14:24,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:14:24,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1679175197, now seen corresponding path program 20 times [2020-10-15 02:14:24,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:14:24,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310965000] [2020-10-15 02:14:24,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:14:24,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:24,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:24,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:24,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:24,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:29,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:29,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-15 02:14:29,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:14:29,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-15 02:14:29,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:29,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:29,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 02:14:29,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-15 02:14:29,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 02:14:29,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:29,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:14:29,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:29,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:29,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:29,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:14:29,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:29,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:14:29,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:29,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:29,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:14:29,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:14:29,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:14:29,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:29,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:14:29,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:29,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:29,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:29,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:29,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-15 02:14:29,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:29,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-15 02:14:29,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:29,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:29,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 02:14:29,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:29,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 02:14:29,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:30,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-15 02:14:30,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:30,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:30,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:30,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-15 02:14:30,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:30,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-15 02:14:30,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:30,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:30,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 02:14:30,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:30,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 02:14:30,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:30,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-15 02:14:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:30,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:30,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:30,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:30,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-15 02:14:30,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:30,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-15 02:14:30,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:30,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:30,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 02:14:30,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:30,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 02:14:30,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:30,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3735 backedges. 1200 proven. 2400 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-15 02:14:30,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310965000] [2020-10-15 02:14:30,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:14:30,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-15 02:14:30,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071458737] [2020-10-15 02:14:30,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-15 02:14:30,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:14:30,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-15 02:14:30,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-15 02:14:30,652 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 24 states. [2020-10-15 02:14:31,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:14:31,353 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2020-10-15 02:14:31,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-15 02:14:31,353 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 152 [2020-10-15 02:14:31,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:14:31,354 INFO L225 Difference]: With dead ends: 124 [2020-10-15 02:14:31,354 INFO L226 Difference]: Without dead ends: 68 [2020-10-15 02:14:31,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2020-10-15 02:14:31,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-15 02:14:31,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-15 02:14:31,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-15 02:14:31,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-15 02:14:31,365 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 152 [2020-10-15 02:14:31,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:14:31,366 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-15 02:14:31,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-15 02:14:31,366 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-15 02:14:31,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-15 02:14:31,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:14:31,373 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:14:31,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-15 02:14:31,373 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:14:31,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:14:31,374 INFO L82 PathProgramCache]: Analyzing trace with hash -783989919, now seen corresponding path program 21 times [2020-10-15 02:14:31,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:14:31,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509787371] [2020-10-15 02:14:31,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:14:31,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:31,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:31,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:31,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:31,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:36,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:36,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-15 02:14:36,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:14:36,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 02:14:36,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:36,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:36,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-15 02:14:36,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-15 02:14:36,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 02:14:36,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:36,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:14:36,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:36,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:36,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:36,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:14:36,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:36,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:14:36,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:36,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:36,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:14:36,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:14:36,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:14:36,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:36,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:14:36,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:36,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:36,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:36,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:36,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-15 02:14:36,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:36,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-15 02:14:36,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:36,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:36,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-15 02:14:36,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:36,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 02:14:36,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:37,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-15 02:14:37,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:37,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:37,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:37,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-15 02:14:37,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:37,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-15 02:14:37,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:37,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:37,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-15 02:14:37,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:37,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 02:14:37,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:37,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-15 02:14:37,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:37,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:37,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:37,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:37,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-15 02:14:37,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:37,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-15 02:14:37,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:37,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:37,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-15 02:14:37,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:37,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 02:14:37,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:37,430 INFO L134 CoverageAnalysis]: Checked inductivity of 4110 backedges. 1323 proven. 2646 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-10-15 02:14:37,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509787371] [2020-10-15 02:14:37,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:14:37,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-15 02:14:37,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525932769] [2020-10-15 02:14:37,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-15 02:14:37,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:14:37,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-15 02:14:37,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-15 02:14:37,432 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 25 states. [2020-10-15 02:14:38,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:14:38,151 INFO L93 Difference]: Finished difference Result 128 states and 138 transitions. [2020-10-15 02:14:38,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-15 02:14:38,152 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 158 [2020-10-15 02:14:38,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:14:38,153 INFO L225 Difference]: With dead ends: 128 [2020-10-15 02:14:38,153 INFO L226 Difference]: Without dead ends: 70 [2020-10-15 02:14:38,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2020-10-15 02:14:38,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-15 02:14:38,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-15 02:14:38,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-15 02:14:38,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-15 02:14:38,159 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 158 [2020-10-15 02:14:38,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:14:38,160 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-15 02:14:38,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-15 02:14:38,160 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-15 02:14:38,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-15 02:14:38,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:14:38,162 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:14:38,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-15 02:14:38,162 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:14:38,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:14:38,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1533894239, now seen corresponding path program 22 times [2020-10-15 02:14:38,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:14:38,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814378791] [2020-10-15 02:14:38,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:14:38,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:38,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:38,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:38,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:38,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:43,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:43,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-15 02:14:43,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:14:43,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 02:14:43,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:43,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:43,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-15 02:14:43,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-15 02:14:43,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 02:14:43,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:43,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:14:43,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:43,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:43,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:43,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:14:43,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:43,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:14:43,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:43,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:43,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:14:43,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:14:43,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:14:43,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:14:43,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:14:43,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:43,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:43,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:43,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:43,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-15 02:14:43,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:43,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-15 02:14:43,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:43,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:43,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-15 02:14:43,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:43,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 02:14:43,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:43,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-15 02:14:43,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:43,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:44,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:44,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-15 02:14:44,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:44,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-15 02:14:44,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:44,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:44,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-15 02:14:44,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:44,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 02:14:44,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:14:44,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-15 02:14:44,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:44,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:44,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:44,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:44,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-15 02:14:44,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:44,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-15 02:14:44,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:44,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:44,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-15 02:14:44,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:44,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 02:14:44,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:44,293 INFO L134 CoverageAnalysis]: Checked inductivity of 4503 backedges. 1452 proven. 2904 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-15 02:14:44,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814378791] [2020-10-15 02:14:44,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:14:44,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-15 02:14:44,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749602932] [2020-10-15 02:14:44,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-15 02:14:44,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:14:44,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-15 02:14:44,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-15 02:14:44,295 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 26 states. [2020-10-15 02:14:45,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:14:45,041 INFO L93 Difference]: Finished difference Result 132 states and 142 transitions. [2020-10-15 02:14:45,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-15 02:14:45,041 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 164 [2020-10-15 02:14:45,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:14:45,042 INFO L225 Difference]: With dead ends: 132 [2020-10-15 02:14:45,042 INFO L226 Difference]: Without dead ends: 72 [2020-10-15 02:14:45,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352 [2020-10-15 02:14:45,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-15 02:14:45,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-15 02:14:45,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-15 02:14:45,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-15 02:14:45,049 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 164 [2020-10-15 02:14:45,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:14:45,049 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-15 02:14:45,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-15 02:14:45,050 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-15 02:14:45,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-15 02:14:45,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:14:45,051 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:14:45,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 02:14:45,052 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:14:45,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:14:45,052 INFO L82 PathProgramCache]: Analyzing trace with hash -242973987, now seen corresponding path program 23 times [2020-10-15 02:14:45,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:14:45,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519817020] [2020-10-15 02:14:45,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:14:45,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:45,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:45,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:45,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:45,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:50,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:50,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-15 02:14:50,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:14:50,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-15 02:14:50,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:50,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:50,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-15 02:14:50,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-15 02:14:50,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-15 02:14:50,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:50,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:14:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:50,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:50,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:50,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:14:50,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:50,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:14:50,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:50,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:50,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:14:50,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:14:50,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:14:50,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:50,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:14:50,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:50,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:50,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:50,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:50,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-15 02:14:50,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:50,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-15 02:14:50,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:50,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:50,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-15 02:14:50,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:50,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-15 02:14:50,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:50,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-15 02:14:50,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:50,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:51,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:51,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-15 02:14:51,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:51,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-15 02:14:51,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:51,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:51,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-15 02:14:51,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:51,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-15 02:14:51,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:51,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-15 02:14:51,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:51,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:51,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:51,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:51,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-15 02:14:51,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:51,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-15 02:14:51,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:51,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:51,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-15 02:14:51,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:51,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-15 02:14:51,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:51,395 INFO L134 CoverageAnalysis]: Checked inductivity of 4914 backedges. 1587 proven. 3174 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-15 02:14:51,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519817020] [2020-10-15 02:14:51,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:14:51,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-15 02:14:51,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392783012] [2020-10-15 02:14:51,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-15 02:14:51,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:14:51,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-15 02:14:51,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-15 02:14:51,397 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 27 states. [2020-10-15 02:14:52,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:14:52,238 INFO L93 Difference]: Finished difference Result 136 states and 146 transitions. [2020-10-15 02:14:52,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-15 02:14:52,239 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 170 [2020-10-15 02:14:52,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:14:52,240 INFO L225 Difference]: With dead ends: 136 [2020-10-15 02:14:52,240 INFO L226 Difference]: Without dead ends: 74 [2020-10-15 02:14:52,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2020-10-15 02:14:52,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-15 02:14:52,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-15 02:14:52,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-15 02:14:52,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-15 02:14:52,246 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 170 [2020-10-15 02:14:52,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:14:52,246 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-15 02:14:52,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-15 02:14:52,247 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-15 02:14:52,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-15 02:14:52,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:14:52,248 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:14:52,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 02:14:52,248 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:14:52,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:14:52,249 INFO L82 PathProgramCache]: Analyzing trace with hash 465899739, now seen corresponding path program 24 times [2020-10-15 02:14:52,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:14:52,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852313138] [2020-10-15 02:14:52,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:14:52,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:52,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:52,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:52,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:52,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:57,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:57,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-15 02:14:57,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:14:57,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-15 02:14:57,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:57,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:57,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-15 02:14:57,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:14:57,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 02:14:57,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:57,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:14:57,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:57,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:57,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:57,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:14:57,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:57,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:14:57,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:57,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:57,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:14:57,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:14:57,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:14:57,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:57,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:14:57,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:57,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:57,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:57,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 02:14:57,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:14:57,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-15 02:14:57,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:57,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:57,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-15 02:14:57,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:57,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 02:14:57,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:58,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-15 02:14:58,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:58,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:58,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:58,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:58,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 02:14:58,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:58,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-15 02:14:58,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:58,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:58,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-15 02:14:58,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:58,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 02:14:58,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:58,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-15 02:14:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:58,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:58,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:58,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:14:58,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 02:14:58,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:14:58,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-15 02:14:58,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:14:58,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:14:58,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-15 02:14:58,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:14:58,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 02:14:58,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:14:58,709 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 1728 proven. 3456 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-15 02:14:58,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852313138] [2020-10-15 02:14:58,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:14:58,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-15 02:14:58,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084772548] [2020-10-15 02:14:58,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-15 02:14:58,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:14:58,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-15 02:14:58,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-15 02:14:58,713 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 28 states. [2020-10-15 02:14:59,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:14:59,635 INFO L93 Difference]: Finished difference Result 140 states and 150 transitions. [2020-10-15 02:14:59,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-15 02:14:59,636 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 176 [2020-10-15 02:14:59,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:14:59,637 INFO L225 Difference]: With dead ends: 140 [2020-10-15 02:14:59,637 INFO L226 Difference]: Without dead ends: 76 [2020-10-15 02:14:59,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756 [2020-10-15 02:14:59,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-15 02:14:59,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-15 02:14:59,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-15 02:14:59,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-15 02:14:59,646 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 176 [2020-10-15 02:14:59,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:14:59,646 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-15 02:14:59,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-15 02:14:59,646 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-15 02:14:59,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-15 02:14:59,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:14:59,648 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:14:59,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-15 02:14:59,648 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:14:59,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:14:59,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1233217625, now seen corresponding path program 25 times [2020-10-15 02:14:59,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:14:59,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768861012] [2020-10-15 02:14:59,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:14:59,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:14:59,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:59,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:59,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:14:59,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:04,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:04,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-15 02:15:04,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:15:04,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 02:15:04,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:04,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:04,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-15 02:15:04,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-15 02:15:04,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-15 02:15:04,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:04,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:15:04,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:04,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:04,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:04,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:15:04,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:15:04,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:15:04,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:04,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:04,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:15:04,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:15:04,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:15:04,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:04,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:15:04,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:04,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:04,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:04,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:04,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-15 02:15:04,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:15:04,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-15 02:15:04,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:04,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:04,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-15 02:15:04,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:04,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-15 02:15:04,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:05,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-15 02:15:05,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:05,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:05,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:05,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-15 02:15:05,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:15:05,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-15 02:15:05,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:05,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:05,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-15 02:15:05,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:05,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-15 02:15:05,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:05,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-15 02:15:05,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:05,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:05,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:05,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:05,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-15 02:15:05,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:15:05,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-15 02:15:05,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:05,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:05,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-15 02:15:05,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:05,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-15 02:15:05,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:06,008 INFO L134 CoverageAnalysis]: Checked inductivity of 5790 backedges. 1875 proven. 3750 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2020-10-15 02:15:06,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768861012] [2020-10-15 02:15:06,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:15:06,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-15 02:15:06,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674819275] [2020-10-15 02:15:06,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-15 02:15:06,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:15:06,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-15 02:15:06,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-15 02:15:06,011 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 29 states. [2020-10-15 02:15:06,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:15:06,951 INFO L93 Difference]: Finished difference Result 144 states and 154 transitions. [2020-10-15 02:15:06,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 02:15:06,952 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 182 [2020-10-15 02:15:06,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:15:06,953 INFO L225 Difference]: With dead ends: 144 [2020-10-15 02:15:06,953 INFO L226 Difference]: Without dead ends: 78 [2020-10-15 02:15:06,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970 [2020-10-15 02:15:06,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-15 02:15:06,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-15 02:15:06,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-15 02:15:06,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-15 02:15:06,964 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 182 [2020-10-15 02:15:06,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:15:06,964 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-15 02:15:06,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-15 02:15:06,964 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-15 02:15:06,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-15 02:15:06,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:15:06,965 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:15:06,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-15 02:15:06,966 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:15:06,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:15:06,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1730406743, now seen corresponding path program 26 times [2020-10-15 02:15:06,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:15:06,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198450189] [2020-10-15 02:15:06,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:15:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:06,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:06,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:07,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:07,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:11,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:11,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-15 02:15:11,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:15:11,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 02:15:11,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:11,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:11,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-15 02:15:11,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-15 02:15:11,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 02:15:11,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:12,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:15:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:12,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:12,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:12,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:15:12,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:15:12,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:15:12,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:12,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:12,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:15:12,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:15:12,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:15:12,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:12,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:15:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:12,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:12,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:12,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:12,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-15 02:15:12,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:15:12,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-10-15 02:15:12,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:12,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:12,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-15 02:15:12,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:12,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 02:15:12,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:12,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-15 02:15:12,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:12,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:13,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:13,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-15 02:15:13,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:15:13,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-15 02:15:13,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:13,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:13,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-15 02:15:13,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:13,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 02:15:13,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:13,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-15 02:15:13,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:13,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:13,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:13,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:13,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-15 02:15:13,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:15:13,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-15 02:15:13,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:13,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:13,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-15 02:15:13,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:13,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 02:15:13,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:13,414 INFO L134 CoverageAnalysis]: Checked inductivity of 6255 backedges. 2028 proven. 4056 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-10-15 02:15:13,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198450189] [2020-10-15 02:15:13,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:15:13,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-15 02:15:13,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957541429] [2020-10-15 02:15:13,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-15 02:15:13,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:15:13,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-15 02:15:13,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-15 02:15:13,417 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 30 states. [2020-10-15 02:15:14,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:15:14,411 INFO L93 Difference]: Finished difference Result 148 states and 158 transitions. [2020-10-15 02:15:14,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-15 02:15:14,413 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 188 [2020-10-15 02:15:14,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:15:14,414 INFO L225 Difference]: With dead ends: 148 [2020-10-15 02:15:14,414 INFO L226 Difference]: Without dead ends: 80 [2020-10-15 02:15:14,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192 [2020-10-15 02:15:14,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-15 02:15:14,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-15 02:15:14,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-15 02:15:14,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-15 02:15:14,420 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 188 [2020-10-15 02:15:14,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:15:14,421 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-15 02:15:14,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-15 02:15:14,421 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-15 02:15:14,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-15 02:15:14,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:15:14,422 INFO L422 BasicCegarLoop]: trace histogram [81, 81, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:15:14,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-15 02:15:14,423 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:15:14,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:15:14,423 INFO L82 PathProgramCache]: Analyzing trace with hash -198249515, now seen corresponding path program 27 times [2020-10-15 02:15:14,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:15:14,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032974661] [2020-10-15 02:15:14,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:15:14,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:14,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:14,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:14,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:14,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:19,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:19,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-15 02:15:19,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:15:19,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-15 02:15:19,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:19,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:19,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-15 02:15:19,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-15 02:15:19,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 02:15:19,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:19,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:15:19,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:19,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:19,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:19,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:15:19,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:15:19,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:15:19,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:19,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:19,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:15:19,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:15:19,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:15:19,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:19,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:15:19,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:19,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:19,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:19,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:19,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-15 02:15:19,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:15:19,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-10-15 02:15:19,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:19,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:19,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-15 02:15:19,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:19,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 02:15:19,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:20,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-15 02:15:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:20,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:20,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:20,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-15 02:15:20,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:15:20,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-15 02:15:20,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:20,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:20,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-15 02:15:20,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:20,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 02:15:20,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:20,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-15 02:15:20,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:20,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:20,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:20,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:20,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-15 02:15:20,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:15:20,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-10-15 02:15:20,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:20,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:20,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-15 02:15:20,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:20,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 02:15:20,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:20,999 INFO L134 CoverageAnalysis]: Checked inductivity of 6738 backedges. 2187 proven. 4374 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-10-15 02:15:20,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1032974661] [2020-10-15 02:15:20,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:15:21,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-15 02:15:21,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223573048] [2020-10-15 02:15:21,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-15 02:15:21,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:15:21,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-15 02:15:21,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-15 02:15:21,001 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 31 states. [2020-10-15 02:15:22,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:15:22,006 INFO L93 Difference]: Finished difference Result 152 states and 162 transitions. [2020-10-15 02:15:22,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-15 02:15:22,006 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 194 [2020-10-15 02:15:22,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:15:22,008 INFO L225 Difference]: With dead ends: 152 [2020-10-15 02:15:22,008 INFO L226 Difference]: Without dead ends: 82 [2020-10-15 02:15:22,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2020-10-15 02:15:22,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-15 02:15:22,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-15 02:15:22,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-15 02:15:22,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-15 02:15:22,015 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 194 [2020-10-15 02:15:22,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:15:22,015 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-15 02:15:22,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-15 02:15:22,015 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-15 02:15:22,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-15 02:15:22,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:15:22,017 INFO L422 BasicCegarLoop]: trace histogram [84, 84, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:15:22,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-15 02:15:22,017 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:15:22,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:15:22,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1724061741, now seen corresponding path program 28 times [2020-10-15 02:15:22,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:15:22,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918576992] [2020-10-15 02:15:22,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:15:22,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:22,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:22,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:22,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:22,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:27,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:27,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-15 02:15:27,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:15:27,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-15 02:15:27,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:27,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:27,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-15 02:15:27,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-15 02:15:27,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-15 02:15:27,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:27,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:15:27,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:27,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:27,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:27,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:15:27,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:15:27,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:15:27,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:27,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:27,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:15:27,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:15:27,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:15:27,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:27,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:15:27,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:27,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:27,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:27,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:27,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-15 02:15:27,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:15:27,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 358 [2020-10-15 02:15:27,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:27,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:27,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-15 02:15:27,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:27,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-15 02:15:27,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:28,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-15 02:15:28,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:28,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:28,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:28,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-15 02:15:28,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:15:28,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-15 02:15:28,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:28,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:28,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-15 02:15:28,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:28,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-15 02:15:28,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:28,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-15 02:15:28,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:28,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:28,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:28,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:28,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-15 02:15:28,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:15:28,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-10-15 02:15:28,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:28,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:28,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-15 02:15:28,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:28,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-15 02:15:28,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:28,680 INFO L134 CoverageAnalysis]: Checked inductivity of 7239 backedges. 2352 proven. 4704 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2020-10-15 02:15:28,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918576992] [2020-10-15 02:15:28,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:15:28,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-15 02:15:28,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503991233] [2020-10-15 02:15:28,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-15 02:15:28,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:15:28,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-15 02:15:28,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-15 02:15:28,682 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 32 states. [2020-10-15 02:15:29,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:15:29,801 INFO L93 Difference]: Finished difference Result 156 states and 166 transitions. [2020-10-15 02:15:29,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-15 02:15:29,802 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 200 [2020-10-15 02:15:29,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:15:29,802 INFO L225 Difference]: With dead ends: 156 [2020-10-15 02:15:29,803 INFO L226 Difference]: Without dead ends: 84 [2020-10-15 02:15:29,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1395, Invalid=2265, Unknown=0, NotChecked=0, Total=3660 [2020-10-15 02:15:29,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-15 02:15:29,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-15 02:15:29,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-15 02:15:29,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-15 02:15:29,820 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 200 [2020-10-15 02:15:29,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:15:29,820 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-15 02:15:29,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-15 02:15:29,820 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-15 02:15:29,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-15 02:15:29,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:15:29,827 INFO L422 BasicCegarLoop]: trace histogram [87, 87, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:15:29,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-15 02:15:29,827 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:15:29,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:15:29,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1040196945, now seen corresponding path program 29 times [2020-10-15 02:15:29,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:15:29,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1987559327] [2020-10-15 02:15:29,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:15:29,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:29,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:29,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:29,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:29,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:34,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:34,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-15 02:15:34,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:15:34,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-15 02:15:34,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:34,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:34,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-15 02:15:34,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-15 02:15:34,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-15 02:15:34,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:34,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:15:34,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:34,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:34,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:34,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:15:34,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:15:34,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:15:34,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:34,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:34,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:15:34,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:15:34,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:15:34,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:15:34,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:15:34,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:34,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:34,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:35,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:35,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-15 02:15:35,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:15:35,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-10-15 02:15:35,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:35,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:35,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-15 02:15:35,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:35,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-15 02:15:35,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:35,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-15 02:15:35,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:35,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:36,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:36,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-15 02:15:36,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:15:36,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-15 02:15:36,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:36,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:36,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-15 02:15:36,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:36,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-15 02:15:36,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:36,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-15 02:15:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:36,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:36,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:36,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:36,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-15 02:15:36,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:15:36,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 328 [2020-10-15 02:15:36,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:36,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:36,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-15 02:15:36,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:36,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-15 02:15:36,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:36,652 INFO L134 CoverageAnalysis]: Checked inductivity of 7758 backedges. 2523 proven. 5046 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-10-15 02:15:36,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1987559327] [2020-10-15 02:15:36,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:15:36,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-15 02:15:36,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039879893] [2020-10-15 02:15:36,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-15 02:15:36,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:15:36,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-15 02:15:36,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-15 02:15:36,655 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 33 states. [2020-10-15 02:15:37,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:15:37,820 INFO L93 Difference]: Finished difference Result 160 states and 170 transitions. [2020-10-15 02:15:37,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-15 02:15:37,821 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 206 [2020-10-15 02:15:37,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:15:37,822 INFO L225 Difference]: With dead ends: 160 [2020-10-15 02:15:37,822 INFO L226 Difference]: Without dead ends: 86 [2020-10-15 02:15:37,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2020-10-15 02:15:37,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-15 02:15:37,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-15 02:15:37,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-15 02:15:37,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-15 02:15:37,829 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 206 [2020-10-15 02:15:37,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:15:37,830 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-15 02:15:37,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-15 02:15:37,830 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-15 02:15:37,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-15 02:15:37,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:15:37,831 INFO L422 BasicCegarLoop]: trace histogram [90, 90, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:15:37,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-15 02:15:37,832 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:15:37,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:15:37,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1622995889, now seen corresponding path program 30 times [2020-10-15 02:15:37,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:15:37,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398717195] [2020-10-15 02:15:37,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:15:37,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:37,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:37,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:37,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:37,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:42,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:42,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-15 02:15:42,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:15:42,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-15 02:15:42,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:42,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:42,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-15 02:15:42,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-15 02:15:42,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 02:15:42,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:42,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:15:42,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:42,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:42,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:42,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:15:42,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:15:42,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:15:42,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:42,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:42,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:15:42,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:15:42,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:15:42,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:42,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:15:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:42,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:42,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:43,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:43,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 02:15:43,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:15:43,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 571 [2020-10-15 02:15:43,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:43,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:43,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-15 02:15:43,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:43,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 02:15:43,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:44,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-15 02:15:44,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:44,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:44,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:44,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 02:15:44,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:15:44,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-10-15 02:15:44,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:44,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:44,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-15 02:15:44,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:44,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 02:15:44,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:44,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-15 02:15:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:44,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:44,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:44,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:44,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 02:15:44,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:15:44,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-10-15 02:15:44,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:44,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:44,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-15 02:15:44,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:44,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 02:15:44,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:44,826 INFO L134 CoverageAnalysis]: Checked inductivity of 8295 backedges. 2700 proven. 5400 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-15 02:15:44,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398717195] [2020-10-15 02:15:44,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:15:44,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-15 02:15:44,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625680677] [2020-10-15 02:15:44,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-15 02:15:44,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:15:44,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-15 02:15:44,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 02:15:44,829 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 34 states. [2020-10-15 02:15:46,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:15:46,023 INFO L93 Difference]: Finished difference Result 164 states and 174 transitions. [2020-10-15 02:15:46,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-15 02:15:46,023 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 212 [2020-10-15 02:15:46,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:15:46,024 INFO L225 Difference]: With dead ends: 164 [2020-10-15 02:15:46,024 INFO L226 Difference]: Without dead ends: 88 [2020-10-15 02:15:46,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1584, Invalid=2576, Unknown=0, NotChecked=0, Total=4160 [2020-10-15 02:15:46,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-15 02:15:46,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-15 02:15:46,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-15 02:15:46,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-15 02:15:46,032 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 212 [2020-10-15 02:15:46,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:15:46,032 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-15 02:15:46,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-15 02:15:46,032 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-15 02:15:46,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-15 02:15:46,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:15:46,034 INFO L422 BasicCegarLoop]: trace histogram [93, 93, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:15:46,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-15 02:15:46,034 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:15:46,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:15:46,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1692925133, now seen corresponding path program 31 times [2020-10-15 02:15:46,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:15:46,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162709864] [2020-10-15 02:15:46,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:15:46,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:46,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:46,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:46,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:46,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:51,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:51,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-15 02:15:51,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:15:51,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-15 02:15:51,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:51,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:51,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-15 02:15:51,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:15:51,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-15 02:15:51,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:51,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:15:51,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:51,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:51,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:51,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:15:51,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:15:51,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:15:51,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:51,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:51,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:15:51,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:15:51,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:15:51,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:51,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:15:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:51,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:51,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:51,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-15 02:15:51,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:15:51,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-10-15 02:15:51,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:51,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:51,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-15 02:15:51,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:51,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-15 02:15:51,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:52,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-15 02:15:52,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:52,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:52,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:52,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:52,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-15 02:15:52,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:15:52,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-10-15 02:15:52,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:52,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:52,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-15 02:15:52,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:52,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-15 02:15:52,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:52,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-15 02:15:52,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:52,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:52,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:52,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:52,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-15 02:15:52,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:15:52,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 346 [2020-10-15 02:15:52,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:52,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:52,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-15 02:15:52,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:52,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-15 02:15:52,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:52,923 INFO L134 CoverageAnalysis]: Checked inductivity of 8850 backedges. 2883 proven. 5766 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2020-10-15 02:15:52,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162709864] [2020-10-15 02:15:52,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:15:52,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-15 02:15:52,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428960361] [2020-10-15 02:15:52,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-15 02:15:52,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:15:52,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-15 02:15:52,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-15 02:15:52,926 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 35 states. [2020-10-15 02:15:54,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:15:54,177 INFO L93 Difference]: Finished difference Result 168 states and 178 transitions. [2020-10-15 02:15:54,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-15 02:15:54,178 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 218 [2020-10-15 02:15:54,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:15:54,179 INFO L225 Difference]: With dead ends: 168 [2020-10-15 02:15:54,179 INFO L226 Difference]: Without dead ends: 90 [2020-10-15 02:15:54,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1683, Invalid=2739, Unknown=0, NotChecked=0, Total=4422 [2020-10-15 02:15:54,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-15 02:15:54,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-15 02:15:54,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-15 02:15:54,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-15 02:15:54,187 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 218 [2020-10-15 02:15:54,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:15:54,188 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-15 02:15:54,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-15 02:15:54,188 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-15 02:15:54,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-15 02:15:54,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:15:54,190 INFO L422 BasicCegarLoop]: trace histogram [96, 96, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:15:54,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-15 02:15:54,190 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:15:54,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:15:54,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1209444661, now seen corresponding path program 32 times [2020-10-15 02:15:54,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:15:54,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990954831] [2020-10-15 02:15:54,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:15:54,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:54,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:54,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:54,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:54,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:59,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:59,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-15 02:15:59,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:15:59,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-15 02:15:59,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:59,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:59,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-15 02:15:59,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:15:59,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-15 02:15:59,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:59,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:15:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:59,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:59,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:59,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:15:59,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:15:59,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:15:59,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:59,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:59,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:15:59,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:15:59,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:15:59,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:15:59,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:15:59,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:15:59,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:15:59,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:15:59,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 02:15:59,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:15:59,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 515 [2020-10-15 02:15:59,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:15:59,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:15:59,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-15 02:15:59,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:15:59,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-15 02:15:59,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:00,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-15 02:16:00,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:00,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:00,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:00,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:00,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 02:16:00,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:00,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 373 [2020-10-15 02:16:00,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:00,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:00,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-15 02:16:00,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:00,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-15 02:16:00,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:00,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-15 02:16:00,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:00,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:00,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:01,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:01,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 02:16:01,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:01,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 420 [2020-10-15 02:16:01,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:01,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:01,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-15 02:16:01,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:01,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-15 02:16:01,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:01,408 INFO L134 CoverageAnalysis]: Checked inductivity of 9423 backedges. 3072 proven. 6144 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2020-10-15 02:16:01,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990954831] [2020-10-15 02:16:01,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:16:01,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-15 02:16:01,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665371777] [2020-10-15 02:16:01,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-15 02:16:01,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:16:01,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-15 02:16:01,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-15 02:16:01,411 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 36 states. [2020-10-15 02:16:02,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:16:02,679 INFO L93 Difference]: Finished difference Result 172 states and 182 transitions. [2020-10-15 02:16:02,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-15 02:16:02,679 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 224 [2020-10-15 02:16:02,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:16:02,681 INFO L225 Difference]: With dead ends: 172 [2020-10-15 02:16:02,681 INFO L226 Difference]: Without dead ends: 92 [2020-10-15 02:16:02,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1785, Invalid=2907, Unknown=0, NotChecked=0, Total=4692 [2020-10-15 02:16:02,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-15 02:16:02,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-15 02:16:02,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-15 02:16:02,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-10-15 02:16:02,687 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 224 [2020-10-15 02:16:02,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:16:02,687 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-10-15 02:16:02,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-15 02:16:02,687 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-10-15 02:16:02,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-15 02:16:02,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:16:02,689 INFO L422 BasicCegarLoop]: trace histogram [99, 99, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:16:02,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-15 02:16:02,689 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:16:02,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:16:02,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1482259017, now seen corresponding path program 33 times [2020-10-15 02:16:02,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:16:02,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599336527] [2020-10-15 02:16:02,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:16:02,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:02,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:02,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:02,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:02,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:07,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:07,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-15 02:16:07,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:16:07,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 02:16:07,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:07,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:07,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-15 02:16:07,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 02:16:07,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-15 02:16:07,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:07,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:16:07,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:07,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:07,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:07,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:16:07,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:07,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:16:07,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:07,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:07,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:16:07,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:07,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:16:07,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:07,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:16:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:07,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:08,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:08,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 02:16:08,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:08,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 416 [2020-10-15 02:16:08,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:08,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:08,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-15 02:16:08,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:08,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-15 02:16:08,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:08,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-15 02:16:08,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:08,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:09,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:09,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:09,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 02:16:09,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:09,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 460 [2020-10-15 02:16:09,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:09,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:09,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-15 02:16:09,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:09,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-15 02:16:09,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:09,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-15 02:16:09,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:09,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:09,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:09,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:09,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 02:16:09,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:09,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 425 [2020-10-15 02:16:09,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:09,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:09,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-15 02:16:09,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:09,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-15 02:16:09,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:09,932 INFO L134 CoverageAnalysis]: Checked inductivity of 10014 backedges. 3267 proven. 6534 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2020-10-15 02:16:09,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599336527] [2020-10-15 02:16:09,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:16:09,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-15 02:16:09,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438414667] [2020-10-15 02:16:09,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-15 02:16:09,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:16:09,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-15 02:16:09,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-15 02:16:09,934 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 37 states. [2020-10-15 02:16:11,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:16:11,279 INFO L93 Difference]: Finished difference Result 176 states and 186 transitions. [2020-10-15 02:16:11,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-15 02:16:11,280 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 230 [2020-10-15 02:16:11,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:16:11,281 INFO L225 Difference]: With dead ends: 176 [2020-10-15 02:16:11,281 INFO L226 Difference]: Without dead ends: 94 [2020-10-15 02:16:11,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1890, Invalid=3080, Unknown=0, NotChecked=0, Total=4970 [2020-10-15 02:16:11,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-15 02:16:11,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-15 02:16:11,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-15 02:16:11,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2020-10-15 02:16:11,288 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 230 [2020-10-15 02:16:11,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:16:11,288 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2020-10-15 02:16:11,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-15 02:16:11,289 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2020-10-15 02:16:11,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-15 02:16:11,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:16:11,290 INFO L422 BasicCegarLoop]: trace histogram [102, 102, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:16:11,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-15 02:16:11,290 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:16:11,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:16:11,290 INFO L82 PathProgramCache]: Analyzing trace with hash 862111559, now seen corresponding path program 34 times [2020-10-15 02:16:11,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:16:11,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453065554] [2020-10-15 02:16:11,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:16:11,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:11,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:11,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:11,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:11,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:16,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:16,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-15 02:16:16,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:16:16,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-15 02:16:16,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:16,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:16,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-15 02:16:16,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-15 02:16:16,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-15 02:16:16,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:16,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:16:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:16,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:16,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:16,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:16:16,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:16,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:16:16,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:16,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:16,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:16:16,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:16,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:16:16,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:16,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:16:16,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:16,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:16,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:16,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:16,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 02:16:16,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:16,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 440 [2020-10-15 02:16:16,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:16,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:16,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-15 02:16:16,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:16,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-15 02:16:16,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:17,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-15 02:16:17,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:17,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:18,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:18,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 02:16:18,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:18,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 488 [2020-10-15 02:16:18,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:18,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:18,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-15 02:16:18,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:18,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-15 02:16:18,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:18,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-15 02:16:18,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:18,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:18,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:18,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:18,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 02:16:18,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:18,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 469 [2020-10-15 02:16:18,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:18,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:18,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-15 02:16:18,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:18,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-15 02:16:18,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:18,700 INFO L134 CoverageAnalysis]: Checked inductivity of 10623 backedges. 3468 proven. 6936 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2020-10-15 02:16:18,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453065554] [2020-10-15 02:16:18,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:16:18,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-15 02:16:18,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122056605] [2020-10-15 02:16:18,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-15 02:16:18,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:16:18,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-15 02:16:18,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-15 02:16:18,702 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 38 states. [2020-10-15 02:16:20,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:16:20,196 INFO L93 Difference]: Finished difference Result 180 states and 190 transitions. [2020-10-15 02:16:20,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-15 02:16:20,197 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 236 [2020-10-15 02:16:20,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:16:20,198 INFO L225 Difference]: With dead ends: 180 [2020-10-15 02:16:20,198 INFO L226 Difference]: Without dead ends: 96 [2020-10-15 02:16:20,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1998, Invalid=3258, Unknown=0, NotChecked=0, Total=5256 [2020-10-15 02:16:20,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-15 02:16:20,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-15 02:16:20,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-15 02:16:20,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2020-10-15 02:16:20,205 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 236 [2020-10-15 02:16:20,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:16:20,205 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2020-10-15 02:16:20,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-15 02:16:20,206 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2020-10-15 02:16:20,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-15 02:16:20,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:16:20,207 INFO L422 BasicCegarLoop]: trace histogram [105, 105, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:16:20,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-15 02:16:20,208 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:16:20,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:16:20,208 INFO L82 PathProgramCache]: Analyzing trace with hash 2034736581, now seen corresponding path program 35 times [2020-10-15 02:16:20,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:16:20,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905730128] [2020-10-15 02:16:20,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:16:20,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:20,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:20,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:20,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:20,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:25,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:25,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-15 02:16:25,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:16:25,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5281 [2020-10-15 02:16:25,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:25,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:25,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-15 02:16:25,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-15 02:16:25,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-15 02:16:25,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:25,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:16:25,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:25,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:25,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:25,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:16:25,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:25,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:16:25,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:25,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:25,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:16:25,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:16:25,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:16:25,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:25,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-15 02:16:25,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:25,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:25,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:26,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:26,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 02:16:26,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:26,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 459 [2020-10-15 02:16:26,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:26,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:26,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-15 02:16:26,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:26,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-15 02:16:26,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:26,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-15 02:16:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:26,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:27,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:27,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 02:16:27,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:16:27,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 448 [2020-10-15 02:16:27,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:27,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:27,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-15 02:16:27,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:27,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-15 02:16:27,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:27,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-15 02:16:27,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:27,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:27,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:27,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:16:27,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 02:16:27,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:16:27,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 464 [2020-10-15 02:16:27,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:16:27,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:16:27,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-15 02:16:27,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:16:27,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-15 02:16:27,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:16:27,919 INFO L134 CoverageAnalysis]: Checked inductivity of 11250 backedges. 3675 proven. 7350 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2020-10-15 02:16:27,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905730128] [2020-10-15 02:16:27,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:16:27,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-15 02:16:27,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765157731] [2020-10-15 02:16:27,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-15 02:16:27,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:16:27,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-15 02:16:27,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 02:16:27,921 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 39 states. [2020-10-15 02:16:29,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:16:29,401 INFO L93 Difference]: Finished difference Result 184 states and 194 transitions. [2020-10-15 02:16:29,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-15 02:16:29,402 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 242 [2020-10-15 02:16:29,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:16:29,405 INFO L225 Difference]: With dead ends: 184 [2020-10-15 02:16:29,405 INFO L226 Difference]: Without dead ends: 98 [2020-10-15 02:16:29,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2109, Invalid=3441, Unknown=0, NotChecked=0, Total=5550 [2020-10-15 02:16:29,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-15 02:16:29,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-15 02:16:29,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-15 02:16:29,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-10-15 02:16:29,412 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 242 [2020-10-15 02:16:29,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:16:29,413 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-10-15 02:16:29,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-15 02:16:29,413 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-10-15 02:16:29,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-15 02:16:29,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:16:29,414 INFO L422 BasicCegarLoop]: trace histogram [108, 108, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:16:29,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-15 02:16:29,415 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:16:29,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:16:29,415 INFO L82 PathProgramCache]: Analyzing trace with hash 862084547, now seen corresponding path program 36 times [2020-10-15 02:16:29,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:16:29,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [841870421] [2020-10-15 02:16:29,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:16:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:16:29,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:29,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:29,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:16:29,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking...