/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/reducercommutativity/sep40-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 07:41:22,345 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 07:41:22,348 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 07:41:22,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 07:41:22,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 07:41:22,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 07:41:22,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 07:41:22,377 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 07:41:22,378 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 07:41:22,379 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 07:41:22,380 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 07:41:22,381 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 07:41:22,381 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 07:41:22,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 07:41:22,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 07:41:22,384 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 07:41:22,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 07:41:22,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 07:41:22,387 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 07:41:22,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 07:41:22,390 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 07:41:22,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 07:41:22,392 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 07:41:22,393 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 07:41:22,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 07:41:22,396 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 07:41:22,396 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 07:41:22,397 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 07:41:22,397 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 07:41:22,398 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 07:41:22,398 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 07:41:22,399 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 07:41:22,400 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 07:41:22,400 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 07:41:22,401 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 07:41:22,402 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 07:41:22,402 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 07:41:22,403 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 07:41:22,403 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 07:41:22,404 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 07:41:22,404 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 07:41:22,405 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 07:41:22,428 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 07:41:22,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 07:41:22,430 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 07:41:22,430 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 07:41:22,430 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 07:41:22,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 07:41:22,430 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 07:41:22,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 07:41:22,431 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 07:41:22,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 07:41:22,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 07:41:22,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 07:41:22,432 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 07:41:22,432 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 07:41:22,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 07:41:22,432 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 07:41:22,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 07:41:22,433 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 07:41:22,433 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 07:41:22,433 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 07:41:22,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 07:41:22,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 07:41:22,434 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 07:41:22,434 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 07:41:22,434 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 07:41:22,434 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 07:41:22,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 07:41:22,435 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 07:41:22,435 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 07:41:22,435 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 07:41:22,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 07:41:22,776 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 07:41:22,780 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 07:41:22,781 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 07:41:22,782 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 07:41:22,783 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sep40-1.i [2020-10-14 07:41:22,843 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8ff9920f/a1a70c7777c64eb2b78716756749d369/FLAG13ba4cf2e [2020-10-14 07:41:23,336 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 07:41:23,337 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/sep40-1.i [2020-10-14 07:41:23,344 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8ff9920f/a1a70c7777c64eb2b78716756749d369/FLAG13ba4cf2e [2020-10-14 07:41:23,689 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8ff9920f/a1a70c7777c64eb2b78716756749d369 [2020-10-14 07:41:23,698 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 07:41:23,700 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 07:41:23,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 07:41:23,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 07:41:23,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 07:41:23,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:41:23" (1/1) ... [2020-10-14 07:41:23,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12fcc4f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:41:23, skipping insertion in model container [2020-10-14 07:41:23,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:41:23" (1/1) ... [2020-10-14 07:41:23,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 07:41:23,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 07:41:23,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 07:41:23,943 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 07:41:23,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 07:41:23,983 INFO L208 MainTranslator]: Completed translation [2020-10-14 07:41:23,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:41:23 WrapperNode [2020-10-14 07:41:23,983 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 07:41:23,984 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 07:41:23,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 07:41:23,984 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 07:41:24,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:41:23" (1/1) ... [2020-10-14 07:41:24,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:41:23" (1/1) ... [2020-10-14 07:41:24,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:41:23" (1/1) ... [2020-10-14 07:41:24,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:41:23" (1/1) ... [2020-10-14 07:41:24,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:41:23" (1/1) ... [2020-10-14 07:41:24,117 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:41:23" (1/1) ... [2020-10-14 07:41:24,118 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:41:23" (1/1) ... [2020-10-14 07:41:24,121 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 07:41:24,122 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 07:41:24,122 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 07:41:24,122 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 07:41:24,123 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:41:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 07:41:24,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 07:41:24,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 07:41:24,187 INFO L138 BoogieDeclarations]: Found implementation of procedure sep [2020-10-14 07:41:24,187 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 07:41:24,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 07:41:24,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 07:41:24,189 INFO L130 BoogieDeclarations]: Found specification of procedure sep [2020-10-14 07:41:24,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 07:41:24,190 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 07:41:24,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 07:41:24,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 07:41:24,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 07:41:24,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 07:41:24,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 07:41:24,460 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 07:41:24,460 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 07:41:24,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:41:24 BoogieIcfgContainer [2020-10-14 07:41:24,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 07:41:24,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 07:41:24,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 07:41:24,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 07:41:24,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:41:23" (1/3) ... [2020-10-14 07:41:24,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5085b60e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:41:24, skipping insertion in model container [2020-10-14 07:41:24,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:41:23" (2/3) ... [2020-10-14 07:41:24,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5085b60e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:41:24, skipping insertion in model container [2020-10-14 07:41:24,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:41:24" (3/3) ... [2020-10-14 07:41:24,475 INFO L109 eAbstractionObserver]: Analyzing ICFG sep40-1.i [2020-10-14 07:41:24,489 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 07:41:24,498 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 07:41:24,518 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 07:41:24,549 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 07:41:24,549 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 07:41:24,549 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 07:41:24,549 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 07:41:24,549 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 07:41:24,550 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 07:41:24,550 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 07:41:24,550 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 07:41:24,573 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-10-14 07:41:24,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 07:41:24,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:41:24,583 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] [2020-10-14 07:41:24,584 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:41:24,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:41:24,591 INFO L82 PathProgramCache]: Analyzing trace with hash 794343521, now seen corresponding path program 1 times [2020-10-14 07:41:24,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:41:24,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781904981] [2020-10-14 07:41:24,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:41:24,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:24,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:24,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:24,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:24,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:25,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:25,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:25,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:25,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 07:41:25,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 07:41:25,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1078 [2020-10-14 07:41:25,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:25,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:25,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:25,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 07:41:25,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:25,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 07:41:25,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:41:25,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:25,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:25,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:25,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:41:25,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:25,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 07:41:25,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:25,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:25,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:25,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:25,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:25,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:25,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:41:25,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:25,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:25,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:25,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:25,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:41:25,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:25,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 07:41:25,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:25,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:25,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:25,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 07:41:25,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:25,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:25,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 07:41:25,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:25,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:25,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:25,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:25,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:41:25,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:25,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 07:41:25,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:25,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:25,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:25,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 07:41:25,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:25,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:25,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:41:25,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:25,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:25,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:25,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:25,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:41:25,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:25,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 07:41:25,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:25,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:25,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:25,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:41:25,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:25,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:25,921 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 07:41:25,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781904981] [2020-10-14 07:41:25,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:41:25,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-10-14 07:41:25,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939043706] [2020-10-14 07:41:25,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 07:41:25,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:41:25,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 07:41:25,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 07:41:25,952 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-10-14 07:41:26,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:41:26,070 INFO L93 Difference]: Finished difference Result 56 states and 75 transitions. [2020-10-14 07:41:26,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 07:41:26,072 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-14 07:41:26,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:41:26,083 INFO L225 Difference]: With dead ends: 56 [2020-10-14 07:41:26,084 INFO L226 Difference]: Without dead ends: 27 [2020-10-14 07:41:26,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 07:41:26,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-14 07:41:26,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-14 07:41:26,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-14 07:41:26,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2020-10-14 07:41:26,172 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 32 [2020-10-14 07:41:26,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:41:26,173 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2020-10-14 07:41:26,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 07:41:26,173 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2020-10-14 07:41:26,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 07:41:26,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:41:26,176 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] [2020-10-14 07:41:26,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 07:41:26,177 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:41:26,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:41:26,177 INFO L82 PathProgramCache]: Analyzing trace with hash 2140793590, now seen corresponding path program 1 times [2020-10-14 07:41:26,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:41:26,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468400751] [2020-10-14 07:41:26,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:41:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:26,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:26,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:26,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:26,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:26,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:26,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:27,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:27,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 07:41:27,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 07:41:27,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1307 [2020-10-14 07:41:27,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:27,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:27,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:41:27,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 07:41:27,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 07:41:27,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:27,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:41:27,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:27,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:27,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:27,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:41:27,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:27,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 07:41:27,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:27,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:27,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:27,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:27,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:27,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:27,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:41:27,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:27,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:27,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:27,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:27,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:41:27,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:27,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 07:41:27,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:27,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:27,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:27,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:27,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:27,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:27,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 07:41:27,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:27,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:27,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:27,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:27,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:41:27,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:27,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 07:41:27,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:27,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:27,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:27,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:27,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:27,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:27,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:41:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:27,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:27,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:27,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:27,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:41:27,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:27,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 07:41:27,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:27,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:27,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:27,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:41:27,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:27,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:27,604 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-14 07:41:27,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468400751] [2020-10-14 07:41:27,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:41:27,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 07:41:27,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925636236] [2020-10-14 07:41:27,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:41:27,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:41:27,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:41:27,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:41:27,608 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand 4 states. [2020-10-14 07:41:27,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:41:27,698 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2020-10-14 07:41:27,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:41:27,699 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-14 07:41:27,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:41:27,700 INFO L225 Difference]: With dead ends: 42 [2020-10-14 07:41:27,700 INFO L226 Difference]: Without dead ends: 29 [2020-10-14 07:41:27,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:41:27,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-14 07:41:27,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-10-14 07:41:27,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-14 07:41:27,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2020-10-14 07:41:27,710 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 32 [2020-10-14 07:41:27,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:41:27,712 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2020-10-14 07:41:27,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:41:27,713 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2020-10-14 07:41:27,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 07:41:27,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:41:27,714 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] [2020-10-14 07:41:27,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 07:41:27,715 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:41:27,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:41:27,715 INFO L82 PathProgramCache]: Analyzing trace with hash -377617996, now seen corresponding path program 1 times [2020-10-14 07:41:27,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:41:27,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332244063] [2020-10-14 07:41:27,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:41:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:27,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:27,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:27,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:27,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:27,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:28,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:29,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:29,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 07:41:29,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 07:41:29,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1580 [2020-10-14 07:41:29,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:29,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:29,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:41:29,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 07:41:29,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 07:41:29,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:29,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:41:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:29,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:29,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:29,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:41:29,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:29,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:41:29,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:29,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:29,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:29,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:29,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:29,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:29,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:41:29,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:29,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:29,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:29,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:29,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:41:29,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:29,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 07:41:29,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:29,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:29,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:29,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:29,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:29,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:29,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 07:41:29,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:29,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:29,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:29,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:41:29,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:29,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 07:41:29,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:29,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:29,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:41:29,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:41:29,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 07:41:29,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:29,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 07:41:29,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:29,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:29,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:29,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:29,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:41:29,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:29,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 07:41:29,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:29,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:29,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:29,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:41:29,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:29,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:29,387 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 07:41:29,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332244063] [2020-10-14 07:41:29,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:41:29,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-14 07:41:29,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830888] [2020-10-14 07:41:29,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:41:29,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:41:29,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:41:29,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:41:29,390 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 4 states. [2020-10-14 07:41:29,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:41:29,475 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2020-10-14 07:41:29,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:41:29,475 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-14 07:41:29,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:41:29,476 INFO L225 Difference]: With dead ends: 50 [2020-10-14 07:41:29,477 INFO L226 Difference]: Without dead ends: 31 [2020-10-14 07:41:29,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:41:29,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-14 07:41:29,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-10-14 07:41:29,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 07:41:29,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2020-10-14 07:41:29,485 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 34 [2020-10-14 07:41:29,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:41:29,485 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2020-10-14 07:41:29,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:41:29,485 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2020-10-14 07:41:29,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 07:41:29,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:41:29,487 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-14 07:41:29,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 07:41:29,488 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:41:29,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:41:29,488 INFO L82 PathProgramCache]: Analyzing trace with hash 502203169, now seen corresponding path program 1 times [2020-10-14 07:41:29,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:41:29,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984110567] [2020-10-14 07:41:29,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:41:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:29,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:29,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:29,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:29,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:29,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:32,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:34,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:34,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 07:41:34,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 07:41:34,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 07:41:34,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:34,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:34,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:41:34,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:41:34,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 07:41:34,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:34,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:41:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:34,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:34,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:34,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:41:34,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:34,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:41:34,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:34,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:34,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:34,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:34,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:34,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:34,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:41:34,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:34,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:34,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:34,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:34,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 07:41:34,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:34,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 07:41:34,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:34,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:34,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:34,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 07:41:34,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:34,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:34,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 07:41:34,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:34,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:34,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:34,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:34,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 07:41:34,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:34,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 07:41:34,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:34,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:34,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:34,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 07:41:34,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:34,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:34,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 07:41:34,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:34,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:34,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:34,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:34,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 07:41:34,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:34,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 07:41:34,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:34,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:34,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:34,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 07:41:34,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:34,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:34,654 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-14 07:41:34,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [984110567] [2020-10-14 07:41:34,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:41:34,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 07:41:34,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813666150] [2020-10-14 07:41:34,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:41:34,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:41:34,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:41:34,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:41:34,657 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 4 states. [2020-10-14 07:41:34,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:41:34,726 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-10-14 07:41:34,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:41:34,727 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-10-14 07:41:34,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:41:34,728 INFO L225 Difference]: With dead ends: 52 [2020-10-14 07:41:34,728 INFO L226 Difference]: Without dead ends: 31 [2020-10-14 07:41:34,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:41:34,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-14 07:41:34,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-10-14 07:41:34,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-14 07:41:34,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-10-14 07:41:34,735 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 43 [2020-10-14 07:41:34,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:41:34,736 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-10-14 07:41:34,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:41:34,736 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-10-14 07:41:34,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 07:41:34,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:41:34,737 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1] [2020-10-14 07:41:34,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 07:41:34,738 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:41:34,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:41:34,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1550635457, now seen corresponding path program 1 times [2020-10-14 07:41:34,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:41:34,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788128789] [2020-10-14 07:41:34,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:41:34,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:34,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:34,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:34,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:34,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:35,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:38,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:39,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:39,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 07:41:39,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 07:41:39,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 07:41:39,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:39,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:39,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:41:39,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 07:41:39,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 07:41:39,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:39,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:41:39,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:39,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:39,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:39,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:41:39,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:39,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 07:41:39,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:39,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:39,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:39,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:39,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:39,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:39,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:41:39,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:39,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:39,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:39,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 07:41:39,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:39,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 07:41:39,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:39,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:39,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:41:39,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:41:39,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 07:41:39,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:39,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 07:41:39,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:39,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:39,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:39,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:39,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 07:41:39,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:39,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 07:41:39,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:39,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:39,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:39,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 07:41:39,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:39,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:39,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 07:41:39,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:39,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:39,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:39,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:39,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 07:41:39,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:39,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 07:41:39,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:39,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:39,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:39,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 07:41:39,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:39,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:39,896 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 07:41:39,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788128789] [2020-10-14 07:41:39,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:41:39,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 07:41:39,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015765262] [2020-10-14 07:41:39,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 07:41:39,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:41:39,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 07:41:39,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:41:39,899 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2020-10-14 07:41:40,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:41:40,018 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-10-14 07:41:40,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 07:41:40,018 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2020-10-14 07:41:40,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:41:40,019 INFO L225 Difference]: With dead ends: 55 [2020-10-14 07:41:40,019 INFO L226 Difference]: Without dead ends: 35 [2020-10-14 07:41:40,021 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 [2020-10-14 07:41:40,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-14 07:41:40,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2020-10-14 07:41:40,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-14 07:41:40,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2020-10-14 07:41:40,035 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 45 [2020-10-14 07:41:40,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:41:40,035 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2020-10-14 07:41:40,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 07:41:40,035 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2020-10-14 07:41:40,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 07:41:40,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:41:40,037 INFO L422 BasicCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1] [2020-10-14 07:41:40,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 07:41:40,037 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:41:40,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:41:40,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1210696714, now seen corresponding path program 2 times [2020-10-14 07:41:40,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:41:40,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478076340] [2020-10-14 07:41:40,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:41:40,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:40,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:40,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:40,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:40,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:41,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:45,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:45,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 07:41:45,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:41:45,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 07:41:45,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:45,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:45,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:41:45,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-14 07:41:45,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 07:41:45,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:45,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:41:45,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:45,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:45,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:45,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:41:45,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:45,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 07:41:45,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:45,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:45,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:45,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:45,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:45,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:45,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:41:45,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:45,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:45,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:45,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:45,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:41:45,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:45,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 07:41:45,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:45,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:45,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:45,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:45,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:45,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:45,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 07:41:45,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:45,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:45,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:45,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:45,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:41:45,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:45,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 07:41:45,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:45,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:45,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:45,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:45,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:45,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:45,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 07:41:45,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:45,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:45,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:45,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:41:45,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:45,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 07:41:45,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:45,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:45,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:41:45,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:41:45,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 07:41:45,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:45,269 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 40 proven. 5 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-14 07:41:45,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478076340] [2020-10-14 07:41:45,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:41:45,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 07:41:45,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690323868] [2020-10-14 07:41:45,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 07:41:45,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:41:45,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 07:41:45,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:41:45,273 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 6 states. [2020-10-14 07:41:45,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:41:45,451 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2020-10-14 07:41:45,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 07:41:45,451 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-10-14 07:41:45,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:41:45,452 INFO L225 Difference]: With dead ends: 61 [2020-10-14 07:41:45,452 INFO L226 Difference]: Without dead ends: 38 [2020-10-14 07:41:45,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:41:45,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-14 07:41:45,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-10-14 07:41:45,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-14 07:41:45,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-10-14 07:41:45,466 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 54 [2020-10-14 07:41:45,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:41:45,468 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-10-14 07:41:45,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 07:41:45,469 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-10-14 07:41:45,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 07:41:45,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:41:45,470 INFO L422 BasicCegarLoop]: trace histogram [9, 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, 1, 1, 1, 1] [2020-10-14 07:41:45,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 07:41:45,471 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:41:45,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:41:45,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1512036321, now seen corresponding path program 3 times [2020-10-14 07:41:45,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:41:45,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287434125] [2020-10-14 07:41:45,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:41:45,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:45,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:45,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:45,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:45,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:50,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:50,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 07:41:50,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:41:50,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 07:41:50,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:50,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:50,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:41:50,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:41:50,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 07:41:50,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:50,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:41:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:50,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:50,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:50,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:41:50,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:50,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:41:50,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:50,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:50,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:50,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:50,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:50,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:50,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:41:50,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:50,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:50,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:50,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:50,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 07:41:50,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:50,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 07:41:50,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:50,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:50,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:50,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 07:41:50,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:50,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:50,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 07:41:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:50,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:50,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:50,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:50,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 07:41:50,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:50,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 07:41:50,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:50,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:50,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:50,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 07:41:50,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:50,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:50,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 07:41:50,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:50,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:50,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:50,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:50,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 07:41:50,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:50,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 07:41:50,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:50,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:50,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:50,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 07:41:50,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:50,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:50,698 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2020-10-14 07:41:50,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287434125] [2020-10-14 07:41:50,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:41:50,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 07:41:50,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358915811] [2020-10-14 07:41:50,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 07:41:50,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:41:50,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 07:41:50,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:41:50,701 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 5 states. [2020-10-14 07:41:50,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:41:50,768 INFO L93 Difference]: Finished difference Result 66 states and 80 transitions. [2020-10-14 07:41:50,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 07:41:50,769 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-14 07:41:50,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:41:50,770 INFO L225 Difference]: With dead ends: 66 [2020-10-14 07:41:50,770 INFO L226 Difference]: Without dead ends: 39 [2020-10-14 07:41:50,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:41:50,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-14 07:41:50,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2020-10-14 07:41:50,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-14 07:41:50,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2020-10-14 07:41:50,777 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 63 [2020-10-14 07:41:50,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:41:50,777 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2020-10-14 07:41:50,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 07:41:50,777 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2020-10-14 07:41:50,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 07:41:50,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:41:50,779 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:41:50,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 07:41:50,779 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:41:50,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:41:50,780 INFO L82 PathProgramCache]: Analyzing trace with hash 481138749, now seen corresponding path program 4 times [2020-10-14 07:41:50,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:41:50,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315618131] [2020-10-14 07:41:50,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:41:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:50,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:50,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:50,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:50,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:55,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:55,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 07:41:55,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:41:55,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 07:41:55,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:55,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:55,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:41:55,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:41:55,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:41:55,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:55,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:41:55,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:55,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:55,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:55,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:41:55,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:55,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:41:55,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:55,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:55,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:55,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:55,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:55,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:55,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 07:41:55,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:55,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:55,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:55,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:55,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 07:41:55,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:55,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 07:41:55,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:55,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:55,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:55,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 07:41:55,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:55,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:55,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 07:41:55,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:55,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:55,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:55,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:55,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 07:41:55,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:55,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 07:41:55,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:55,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:55,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:55,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 07:41:55,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:55,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:55,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 07:41:55,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:55,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:55,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:56,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:56,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 07:41:56,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:56,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 07:41:56,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:56,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:56,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:56,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 07:41:56,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:56,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:56,041 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2020-10-14 07:41:56,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [315618131] [2020-10-14 07:41:56,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:41:56,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 07:41:56,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124697658] [2020-10-14 07:41:56,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 07:41:56,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:41:56,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 07:41:56,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:41:56,046 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand 6 states. [2020-10-14 07:41:56,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:41:56,146 INFO L93 Difference]: Finished difference Result 68 states and 82 transitions. [2020-10-14 07:41:56,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 07:41:56,146 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-10-14 07:41:56,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:41:56,147 INFO L225 Difference]: With dead ends: 68 [2020-10-14 07:41:56,147 INFO L226 Difference]: Without dead ends: 41 [2020-10-14 07:41:56,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:41:56,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-14 07:41:56,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2020-10-14 07:41:56,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-14 07:41:56,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2020-10-14 07:41:56,161 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 65 [2020-10-14 07:41:56,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:41:56,162 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2020-10-14 07:41:56,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 07:41:56,162 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2020-10-14 07:41:56,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 07:41:56,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:41:56,166 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 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] [2020-10-14 07:41:56,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 07:41:56,166 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:41:56,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:41:56,167 INFO L82 PathProgramCache]: Analyzing trace with hash 366967003, now seen corresponding path program 5 times [2020-10-14 07:41:56,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:41:56,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862678171] [2020-10-14 07:41:56,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:41:56,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:56,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:56,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:56,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:56,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:01,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:01,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 07:42:01,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:42:01,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 07:42:01,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:01,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:01,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:42:01,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-14 07:42:01,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 07:42:01,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:01,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:42:01,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:01,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:01,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:01,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:42:01,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:01,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:42:01,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:01,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:01,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:01,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:01,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:01,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:01,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 07:42:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:01,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:01,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:01,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:01,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 07:42:01,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:01,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 07:42:01,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:01,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:01,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:01,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:01,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:01,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:01,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 07:42:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:01,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:01,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:01,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:01,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 07:42:01,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:01,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 07:42:01,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:01,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:01,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:01,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:01,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:01,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:01,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 07:42:01,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:01,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:01,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:01,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:01,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 07:42:01,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:01,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 07:42:01,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:01,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:01,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:01,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 07:42:01,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:01,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:01,365 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-14 07:42:01,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862678171] [2020-10-14 07:42:01,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:42:01,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 07:42:01,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211362250] [2020-10-14 07:42:01,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 07:42:01,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:42:01,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 07:42:01,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:42:01,370 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 5 states. [2020-10-14 07:42:01,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:42:01,464 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-10-14 07:42:01,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 07:42:01,464 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-10-14 07:42:01,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:42:01,465 INFO L225 Difference]: With dead ends: 63 [2020-10-14 07:42:01,465 INFO L226 Difference]: Without dead ends: 43 [2020-10-14 07:42:01,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:42:01,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-14 07:42:01,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2020-10-14 07:42:01,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-14 07:42:01,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-10-14 07:42:01,479 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 67 [2020-10-14 07:42:01,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:42:01,479 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-10-14 07:42:01,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 07:42:01,480 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-10-14 07:42:01,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 07:42:01,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:42:01,485 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:42:01,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 07:42:01,485 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:42:01,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:42:01,486 INFO L82 PathProgramCache]: Analyzing trace with hash -515095459, now seen corresponding path program 6 times [2020-10-14 07:42:01,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:42:01,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563178617] [2020-10-14 07:42:01,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:42:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:01,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:01,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:01,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:01,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:06,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:06,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 07:42:06,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:42:06,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 07:42:06,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:06,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:06,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:42:06,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-14 07:42:06,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 07:42:06,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:06,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:42:06,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:06,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:06,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:06,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:42:06,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:06,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 07:42:06,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:06,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:06,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:06,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:06,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:06,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:06,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 07:42:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:06,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:06,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:06,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:06,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 07:42:06,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:06,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 07:42:06,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:06,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:06,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:06,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:06,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:06,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:06,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 07:42:06,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:06,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:06,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:06,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 07:42:06,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:06,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 07:42:06,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:06,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:06,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:42:06,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:42:06,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 07:42:06,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:06,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 07:42:06,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:06,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:06,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:06,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:06,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 07:42:06,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:06,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 07:42:06,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:06,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:06,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:06,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 07:42:06,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:06,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:06,697 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 37 proven. 49 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-14 07:42:06,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563178617] [2020-10-14 07:42:06,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:42:06,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 07:42:06,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147687240] [2020-10-14 07:42:06,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 07:42:06,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:42:06,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 07:42:06,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:42:06,700 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-10-14 07:42:06,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:42:06,885 INFO L93 Difference]: Finished difference Result 75 states and 93 transitions. [2020-10-14 07:42:06,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 07:42:06,886 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-10-14 07:42:06,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:42:06,887 INFO L225 Difference]: With dead ends: 75 [2020-10-14 07:42:06,887 INFO L226 Difference]: Without dead ends: 47 [2020-10-14 07:42:06,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:42:06,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-14 07:42:06,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-10-14 07:42:06,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-14 07:42:06,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2020-10-14 07:42:06,901 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 69 [2020-10-14 07:42:06,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:42:06,901 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2020-10-14 07:42:06,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 07:42:06,902 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2020-10-14 07:42:06,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-14 07:42:06,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:42:06,906 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:42:06,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 07:42:06,906 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:42:06,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:42:06,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1416722792, now seen corresponding path program 7 times [2020-10-14 07:42:06,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:42:06,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870783806] [2020-10-14 07:42:06,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:42:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:06,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:06,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:06,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:06,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:11,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:11,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 07:42:11,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:42:11,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 07:42:11,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:11,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:11,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:42:11,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:42:11,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 07:42:11,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:11,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:42:11,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:11,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:11,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:11,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:42:11,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:11,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:42:11,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:11,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:11,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:11,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:11,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:11,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:11,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 07:42:11,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:11,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:11,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:12,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:12,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:42:12,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:12,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 07:42:12,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:12,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:12,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:12,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:42:12,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:12,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:12,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 07:42:12,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:12,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:12,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:12,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:12,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:42:12,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:12,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 07:42:12,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:12,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:12,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:12,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:42:12,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:12,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:12,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 07:42:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:12,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:12,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:12,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:12,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:42:12,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:12,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 07:42:12,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:12,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:12,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:12,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:42:12,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:12,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:12,117 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2020-10-14 07:42:12,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870783806] [2020-10-14 07:42:12,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:42:12,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 07:42:12,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308570055] [2020-10-14 07:42:12,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 07:42:12,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:42:12,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 07:42:12,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:42:12,119 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand 7 states. [2020-10-14 07:42:12,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:42:12,217 INFO L93 Difference]: Finished difference Result 80 states and 96 transitions. [2020-10-14 07:42:12,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 07:42:12,217 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-10-14 07:42:12,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:42:12,218 INFO L225 Difference]: With dead ends: 80 [2020-10-14 07:42:12,218 INFO L226 Difference]: Without dead ends: 48 [2020-10-14 07:42:12,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:42:12,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-14 07:42:12,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-14 07:42:12,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-14 07:42:12,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2020-10-14 07:42:12,225 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 78 [2020-10-14 07:42:12,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:42:12,225 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2020-10-14 07:42:12,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 07:42:12,225 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2020-10-14 07:42:12,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 07:42:12,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:42:12,226 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:42:12,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 07:42:12,227 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:42:12,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:42:12,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1632310970, now seen corresponding path program 8 times [2020-10-14 07:42:12,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:42:12,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1368961311] [2020-10-14 07:42:12,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:42:12,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:12,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:12,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:12,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:12,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:17,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:17,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 07:42:17,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:42:17,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 07:42:17,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:17,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:17,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:42:17,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-14 07:42:17,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:42:17,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:17,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:42:17,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:17,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:17,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:17,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:42:17,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:17,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:42:17,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:17,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:17,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:17,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:17,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:17,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:17,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 07:42:17,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:17,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:17,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:17,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:17,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:42:17,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:17,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 07:42:17,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:17,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:17,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:17,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:17,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:17,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:17,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 07:42:17,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:17,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:17,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:17,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:17,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:42:17,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:17,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 07:42:17,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:17,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:17,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:17,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:17,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:17,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:17,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 07:42:17,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:17,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:17,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:17,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:17,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:42:17,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:17,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 07:42:17,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:17,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:17,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:17,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:42:17,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:17,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:17,421 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2020-10-14 07:42:17,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1368961311] [2020-10-14 07:42:17,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:42:17,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 07:42:17,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146236977] [2020-10-14 07:42:17,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 07:42:17,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:42:17,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 07:42:17,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:42:17,423 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 6 states. [2020-10-14 07:42:17,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:42:17,514 INFO L93 Difference]: Finished difference Result 73 states and 86 transitions. [2020-10-14 07:42:17,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 07:42:17,514 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-10-14 07:42:17,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:42:17,516 INFO L225 Difference]: With dead ends: 73 [2020-10-14 07:42:17,516 INFO L226 Difference]: Without dead ends: 50 [2020-10-14 07:42:17,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:42:17,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-14 07:42:17,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-14 07:42:17,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 07:42:17,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2020-10-14 07:42:17,522 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 80 [2020-10-14 07:42:17,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:42:17,522 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2020-10-14 07:42:17,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 07:42:17,523 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2020-10-14 07:42:17,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-14 07:42:17,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:42:17,523 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:42:17,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 07:42:17,524 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:42:17,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:42:17,524 INFO L82 PathProgramCache]: Analyzing trace with hash -144412808, now seen corresponding path program 9 times [2020-10-14 07:42:17,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:42:17,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900279721] [2020-10-14 07:42:17,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:42:17,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:17,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:17,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:17,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:17,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:22,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:22,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 07:42:22,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:42:22,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 07:42:22,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:22,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:22,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:42:22,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 07:42:22,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 07:42:22,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:22,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:42:22,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:22,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:22,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:22,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:42:22,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:22,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:42:22,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:22,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:22,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:22,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:22,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:22,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:22,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 07:42:22,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:22,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:22,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:22,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:42:22,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:22,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 07:42:22,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:22,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:22,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:42:22,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:42:22,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 07:42:22,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:22,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 07:42:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:22,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:22,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:22,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:22,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:42:22,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:22,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 07:42:22,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:22,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:22,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:22,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:42:22,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:22,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:22,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 07:42:22,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:22,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:22,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:22,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:22,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:42:22,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:22,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 07:42:22,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:22,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:22,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:22,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:42:22,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:22,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:22,756 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-10-14 07:42:22,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900279721] [2020-10-14 07:42:22,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:42:22,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 07:42:22,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226421924] [2020-10-14 07:42:22,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 07:42:22,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:42:22,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 07:42:22,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 07:42:22,759 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand 8 states. [2020-10-14 07:42:22,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:42:22,944 INFO L93 Difference]: Finished difference Result 87 states and 107 transitions. [2020-10-14 07:42:22,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 07:42:22,945 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 82 [2020-10-14 07:42:22,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:42:22,946 INFO L225 Difference]: With dead ends: 87 [2020-10-14 07:42:22,946 INFO L226 Difference]: Without dead ends: 54 [2020-10-14 07:42:22,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-14 07:42:22,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-14 07:42:22,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2020-10-14 07:42:22,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-14 07:42:22,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2020-10-14 07:42:22,953 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 82 [2020-10-14 07:42:22,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:42:22,954 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2020-10-14 07:42:22,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 07:42:22,954 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2020-10-14 07:42:22,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-14 07:42:22,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:42:22,955 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:42:22,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 07:42:22,955 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:42:22,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:42:22,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1531218467, now seen corresponding path program 10 times [2020-10-14 07:42:22,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:42:22,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697721498] [2020-10-14 07:42:22,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:42:22,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:22,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:22,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:23,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:23,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:27,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:27,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 07:42:27,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:42:27,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 07:42:27,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:27,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:27,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 07:42:27,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 07:42:27,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 07:42:27,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:27,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:42:27,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:27,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:27,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:27,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:42:27,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:27,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:42:27,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:27,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:27,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:27,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:27,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:27,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:27,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 07:42:27,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:27,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:28,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:28,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 07:42:28,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:28,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 07:42:28,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:28,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:28,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 07:42:28,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:42:28,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 07:42:28,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:28,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 07:42:28,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:28,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:28,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:28,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:28,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 07:42:28,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:28,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 07:42:28,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:28,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:28,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:28,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 07:42:28,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:28,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:28,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 07:42:28,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:28,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:28,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:28,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:28,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 07:42:28,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:28,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 07:42:28,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:28,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:28,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:28,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 07:42:28,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:28,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:28,269 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 213 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-10-14 07:42:28,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697721498] [2020-10-14 07:42:28,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:42:28,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 07:42:28,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674726850] [2020-10-14 07:42:28,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 07:42:28,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:42:28,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 07:42:28,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:42:28,271 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand 9 states. [2020-10-14 07:42:28,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:42:28,475 INFO L93 Difference]: Finished difference Result 93 states and 115 transitions. [2020-10-14 07:42:28,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 07:42:28,476 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-10-14 07:42:28,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:42:28,477 INFO L225 Difference]: With dead ends: 93 [2020-10-14 07:42:28,477 INFO L226 Difference]: Without dead ends: 57 [2020-10-14 07:42:28,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-14 07:42:28,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-14 07:42:28,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2020-10-14 07:42:28,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-14 07:42:28,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2020-10-14 07:42:28,495 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 91 [2020-10-14 07:42:28,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:42:28,495 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2020-10-14 07:42:28,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 07:42:28,496 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2020-10-14 07:42:28,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 07:42:28,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:42:28,497 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:42:28,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 07:42:28,500 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:42:28,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:42:28,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1723474968, now seen corresponding path program 11 times [2020-10-14 07:42:28,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:42:28,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680466662] [2020-10-14 07:42:28,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:42:28,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:28,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:28,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:28,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:28,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:33,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:33,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 07:42:33,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:42:33,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 07:42:33,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:33,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:33,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:42:33,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:42:33,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 07:42:33,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:33,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:42:33,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:33,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:33,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:33,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:42:33,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:33,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:42:33,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:33,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:33,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:33,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:33,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:33,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:33,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 07:42:33,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:33,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:33,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:33,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:33,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 07:42:33,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:33,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-14 07:42:33,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:33,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:33,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:33,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 07:42:33,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:33,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:33,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 07:42:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:33,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:33,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:33,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:33,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 07:42:33,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:33,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-14 07:42:33,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:33,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:33,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:33,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 07:42:33,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:33,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:33,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-14 07:42:33,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:33,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:33,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:34,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:34,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 07:42:34,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:34,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-14 07:42:34,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:34,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:34,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:34,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 07:42:34,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:34,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:34,175 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2020-10-14 07:42:34,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680466662] [2020-10-14 07:42:34,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:42:34,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 07:42:34,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810165207] [2020-10-14 07:42:34,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 07:42:34,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:42:34,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 07:42:34,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 07:42:34,179 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand 8 states. [2020-10-14 07:42:34,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:42:34,307 INFO L93 Difference]: Finished difference Result 98 states and 118 transitions. [2020-10-14 07:42:34,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 07:42:34,308 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 100 [2020-10-14 07:42:34,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:42:34,309 INFO L225 Difference]: With dead ends: 98 [2020-10-14 07:42:34,309 INFO L226 Difference]: Without dead ends: 58 [2020-10-14 07:42:34,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 07:42:34,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-14 07:42:34,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-14 07:42:34,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-14 07:42:34,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2020-10-14 07:42:34,326 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 100 [2020-10-14 07:42:34,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:42:34,326 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2020-10-14 07:42:34,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 07:42:34,327 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2020-10-14 07:42:34,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 07:42:34,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:42:34,334 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 5, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:42:34,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 07:42:34,334 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:42:34,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:42:34,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1472131398, now seen corresponding path program 12 times [2020-10-14 07:42:34,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:42:34,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073201863] [2020-10-14 07:42:34,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:42:34,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:34,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:34,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:34,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:34,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:39,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:39,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 07:42:39,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:42:39,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 07:42:39,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:39,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:39,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 07:42:39,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:42:39,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 07:42:39,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:39,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:42:39,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:39,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:39,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:39,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:42:39,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:39,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:42:39,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:39,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:39,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:39,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:39,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:39,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:39,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 07:42:39,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:39,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:39,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:39,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:39,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 07:42:39,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:39,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-14 07:42:39,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:39,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:39,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:39,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 07:42:39,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:39,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:39,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 07:42:39,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:39,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:39,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:39,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:39,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 07:42:39,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:39,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-14 07:42:39,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:39,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:39,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:39,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 07:42:39,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:39,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:39,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 07:42:39,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:39,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:39,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:39,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:39,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 07:42:39,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:39,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-14 07:42:39,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:39,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:39,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:39,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 07:42:39,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:39,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:39,931 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2020-10-14 07:42:39,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073201863] [2020-10-14 07:42:39,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:42:39,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 07:42:39,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056101457] [2020-10-14 07:42:39,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 07:42:39,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:42:39,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 07:42:39,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:42:39,934 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand 9 states. [2020-10-14 07:42:40,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:42:40,051 INFO L93 Difference]: Finished difference Result 100 states and 120 transitions. [2020-10-14 07:42:40,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 07:42:40,052 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-10-14 07:42:40,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:42:40,053 INFO L225 Difference]: With dead ends: 100 [2020-10-14 07:42:40,053 INFO L226 Difference]: Without dead ends: 60 [2020-10-14 07:42:40,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:42:40,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-14 07:42:40,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-14 07:42:40,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 07:42:40,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2020-10-14 07:42:40,067 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 102 [2020-10-14 07:42:40,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:42:40,068 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2020-10-14 07:42:40,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 07:42:40,068 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2020-10-14 07:42:40,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 07:42:40,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:42:40,069 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 6, 6, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:42:40,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 07:42:40,069 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:42:40,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:42:40,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1548232484, now seen corresponding path program 13 times [2020-10-14 07:42:40,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:42:40,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680141875] [2020-10-14 07:42:40,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:42:40,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:40,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:40,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:40,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:40,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:45,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:45,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 07:42:45,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:42:45,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 07:42:45,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:45,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:45,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:42:45,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 07:42:45,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 07:42:45,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:45,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:42:45,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:45,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:45,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:45,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:42:45,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:45,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 07:42:45,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:45,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:45,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:45,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:45,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:45,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:45,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 07:42:45,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:45,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:45,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:45,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:45,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 07:42:45,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:45,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 07:42:45,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:45,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:45,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:45,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:45,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:45,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:45,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 07:42:45,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:45,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:45,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:45,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:45,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 07:42:45,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:45,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 07:42:45,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:45,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:45,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:45,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:45,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:45,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:45,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 07:42:45,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:45,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:45,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:45,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:45,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 07:42:45,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:45,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 07:42:45,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:45,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:45,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:45,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 07:42:45,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:45,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:45,436 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2020-10-14 07:42:45,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680141875] [2020-10-14 07:42:45,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:42:45,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 07:42:45,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303856886] [2020-10-14 07:42:45,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 07:42:45,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:42:45,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 07:42:45,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:42:45,438 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand 7 states. [2020-10-14 07:42:45,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:42:45,544 INFO L93 Difference]: Finished difference Result 91 states and 108 transitions. [2020-10-14 07:42:45,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 07:42:45,544 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2020-10-14 07:42:45,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:42:45,545 INFO L225 Difference]: With dead ends: 91 [2020-10-14 07:42:45,545 INFO L226 Difference]: Without dead ends: 62 [2020-10-14 07:42:45,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:42:45,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-14 07:42:45,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-14 07:42:45,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-14 07:42:45,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2020-10-14 07:42:45,557 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 104 [2020-10-14 07:42:45,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:42:45,557 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2020-10-14 07:42:45,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 07:42:45,558 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2020-10-14 07:42:45,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 07:42:45,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:42:45,559 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:42:45,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 07:42:45,559 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:42:45,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:42:45,559 INFO L82 PathProgramCache]: Analyzing trace with hash -2020928870, now seen corresponding path program 14 times [2020-10-14 07:42:45,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:42:45,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117515716] [2020-10-14 07:42:45,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:42:45,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:45,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:45,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:45,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:45,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:50,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:50,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 07:42:50,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:42:50,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 07:42:50,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:50,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:50,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 07:42:50,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 07:42:50,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 07:42:50,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:50,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:42:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:50,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:50,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:50,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:42:50,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:50,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:42:50,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:50,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:50,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:50,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:50,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:50,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:50,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 07:42:50,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:50,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:50,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:50,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:50,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 07:42:50,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:50,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 07:42:50,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:50,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:50,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:50,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:50,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:50,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:50,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 07:42:50,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:50,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:50,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:50,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 07:42:50,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:50,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 07:42:50,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:50,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:50,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 07:42:50,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:42:50,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 07:42:50,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:42:50,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 07:42:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:50,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:50,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:50,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:50,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 07:42:50,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:50,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-14 07:42:50,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:50,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:50,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:50,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 07:42:50,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:50,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:50,916 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 124 proven. 175 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2020-10-14 07:42:50,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117515716] [2020-10-14 07:42:50,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:42:50,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 07:42:50,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998154297] [2020-10-14 07:42:50,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 07:42:50,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:42:50,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 07:42:50,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 07:42:50,919 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand 10 states. [2020-10-14 07:42:51,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:42:51,144 INFO L93 Difference]: Finished difference Result 107 states and 131 transitions. [2020-10-14 07:42:51,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 07:42:51,145 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 106 [2020-10-14 07:42:51,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:42:51,146 INFO L225 Difference]: With dead ends: 107 [2020-10-14 07:42:51,146 INFO L226 Difference]: Without dead ends: 66 [2020-10-14 07:42:51,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-14 07:42:51,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-14 07:42:51,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-10-14 07:42:51,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-14 07:42:51,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2020-10-14 07:42:51,153 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 106 [2020-10-14 07:42:51,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:42:51,154 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2020-10-14 07:42:51,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 07:42:51,154 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2020-10-14 07:42:51,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-14 07:42:51,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:42:51,155 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:42:51,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 07:42:51,155 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:42:51,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:42:51,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1853934331, now seen corresponding path program 15 times [2020-10-14 07:42:51,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:42:51,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369709939] [2020-10-14 07:42:51,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:42:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:51,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:51,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:51,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:51,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:56,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:56,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 07:42:56,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:42:56,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 07:42:56,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:56,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:56,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 07:42:56,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:42:56,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 07:42:56,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:56,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:42:56,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:56,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:56,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:56,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:42:56,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:42:56,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:42:56,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:56,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:56,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:56,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:42:56,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:56,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:56,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 07:42:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:56,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:56,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:56,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:56,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 07:42:56,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:56,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 07:42:56,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:56,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:56,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:56,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 07:42:56,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:56,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:56,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 07:42:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:56,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:56,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:56,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:56,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 07:42:56,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:56,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 07:42:56,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:56,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:56,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:56,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 07:42:56,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:56,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:56,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 07:42:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:56,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:56,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:56,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:42:56,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 07:42:56,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:42:56,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-14 07:42:56,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:42:56,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:42:56,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:42:56,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 07:42:56,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:42:56,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:42:56,617 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 724 trivial. 0 not checked. [2020-10-14 07:42:56,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369709939] [2020-10-14 07:42:56,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:42:56,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 07:42:56,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205524419] [2020-10-14 07:42:56,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 07:42:56,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:42:56,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 07:42:56,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 07:42:56,619 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand 10 states. [2020-10-14 07:42:56,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:42:56,738 INFO L93 Difference]: Finished difference Result 112 states and 134 transitions. [2020-10-14 07:42:56,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 07:42:56,739 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 115 [2020-10-14 07:42:56,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:42:56,740 INFO L225 Difference]: With dead ends: 112 [2020-10-14 07:42:56,740 INFO L226 Difference]: Without dead ends: 67 [2020-10-14 07:42:56,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 07:42:56,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-14 07:42:56,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2020-10-14 07:42:56,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-14 07:42:56,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 77 transitions. [2020-10-14 07:42:56,746 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 77 transitions. Word has length 115 [2020-10-14 07:42:56,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:42:56,747 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 77 transitions. [2020-10-14 07:42:56,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 07:42:56,750 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 77 transitions. [2020-10-14 07:42:56,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-14 07:42:56,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:42:56,751 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 7, 7, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:42:56,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 07:42:56,752 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:42:56,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:42:56,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1129777177, now seen corresponding path program 16 times [2020-10-14 07:42:56,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:42:56,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964594062] [2020-10-14 07:42:56,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:42:56,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:42:56,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:56,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:56,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:42:56,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:01,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:01,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 07:43:01,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:43:01,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 07:43:01,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:01,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:01,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:43:01,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 07:43:01,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 07:43:01,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:01,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:43:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:01,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:01,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:01,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:43:01,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:01,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:43:01,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:01,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:01,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:01,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:01,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:01,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:01,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 07:43:01,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:01,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:01,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:01,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:01,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 07:43:01,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:01,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-14 07:43:01,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:01,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:01,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:01,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:01,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:01,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:01,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 07:43:01,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:01,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:01,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:02,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:02,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 07:43:02,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:02,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-14 07:43:02,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:02,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:02,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:02,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:02,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:02,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:02,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 07:43:02,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:02,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:02,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:02,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:02,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 07:43:02,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:02,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-14 07:43:02,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:02,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:02,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:02,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 07:43:02,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:02,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:02,288 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 757 trivial. 0 not checked. [2020-10-14 07:43:02,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [964594062] [2020-10-14 07:43:02,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:43:02,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 07:43:02,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078740937] [2020-10-14 07:43:02,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 07:43:02,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:43:02,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 07:43:02,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 07:43:02,291 INFO L87 Difference]: Start difference. First operand 66 states and 77 transitions. Second operand 8 states. [2020-10-14 07:43:02,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:43:02,393 INFO L93 Difference]: Finished difference Result 101 states and 120 transitions. [2020-10-14 07:43:02,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 07:43:02,394 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 117 [2020-10-14 07:43:02,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:43:02,395 INFO L225 Difference]: With dead ends: 101 [2020-10-14 07:43:02,395 INFO L226 Difference]: Without dead ends: 69 [2020-10-14 07:43:02,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 07:43:02,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-14 07:43:02,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2020-10-14 07:43:02,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-14 07:43:02,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 79 transitions. [2020-10-14 07:43:02,407 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 79 transitions. Word has length 117 [2020-10-14 07:43:02,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:43:02,407 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 79 transitions. [2020-10-14 07:43:02,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 07:43:02,407 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 79 transitions. [2020-10-14 07:43:02,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-14 07:43:02,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:43:02,409 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 7, 7, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:43:02,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 07:43:02,410 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:43:02,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:43:02,410 INFO L82 PathProgramCache]: Analyzing trace with hash -2132592357, now seen corresponding path program 17 times [2020-10-14 07:43:02,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:43:02,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [141377092] [2020-10-14 07:43:02,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:43:02,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:02,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:02,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:02,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:02,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:07,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:07,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 07:43:07,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:43:07,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 07:43:07,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:07,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:07,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 07:43:07,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-14 07:43:07,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 07:43:07,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:07,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:43:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:07,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:07,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:07,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:43:07,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:07,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:43:07,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:07,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:07,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:07,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:07,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:07,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:07,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 07:43:07,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:07,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:07,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:07,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:07,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 07:43:07,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:07,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 07:43:07,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:07,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:07,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:07,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:07,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:07,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:07,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 07:43:07,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:07,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:07,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:07,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 07:43:07,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:07,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 07:43:07,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:07,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:07,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 07:43:07,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:43:07,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 07:43:07,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:07,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 07:43:07,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:07,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:07,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:07,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:07,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 07:43:07,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:07,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 07:43:07,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:07,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:07,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:07,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 07:43:07,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:07,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:07,856 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 165 proven. 235 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2020-10-14 07:43:07,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [141377092] [2020-10-14 07:43:07,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:43:07,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 07:43:07,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451755236] [2020-10-14 07:43:07,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 07:43:07,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:43:07,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 07:43:07,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:43:07,858 INFO L87 Difference]: Start difference. First operand 68 states and 79 transitions. Second operand 11 states. [2020-10-14 07:43:08,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:43:08,122 INFO L93 Difference]: Finished difference Result 119 states and 145 transitions. [2020-10-14 07:43:08,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 07:43:08,122 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 119 [2020-10-14 07:43:08,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:43:08,124 INFO L225 Difference]: With dead ends: 119 [2020-10-14 07:43:08,124 INFO L226 Difference]: Without dead ends: 73 [2020-10-14 07:43:08,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-14 07:43:08,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-14 07:43:08,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2020-10-14 07:43:08,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-14 07:43:08,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 83 transitions. [2020-10-14 07:43:08,130 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 83 transitions. Word has length 119 [2020-10-14 07:43:08,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:43:08,130 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 83 transitions. [2020-10-14 07:43:08,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 07:43:08,130 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 83 transitions. [2020-10-14 07:43:08,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 07:43:08,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:43:08,131 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 7, 7, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:43:08,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 07:43:08,132 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:43:08,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:43:08,132 INFO L82 PathProgramCache]: Analyzing trace with hash 687820698, now seen corresponding path program 18 times [2020-10-14 07:43:08,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:43:08,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924311195] [2020-10-14 07:43:08,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:43:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:08,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:08,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:08,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:08,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:13,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:13,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 07:43:13,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:43:13,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 07:43:13,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:13,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:13,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 07:43:13,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:43:13,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 07:43:13,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:13,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:43:13,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:13,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:13,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:13,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:43:13,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:13,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 07:43:13,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:13,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:13,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:13,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:13,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:13,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:13,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 07:43:13,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:13,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:13,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:13,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:13,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 07:43:13,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:13,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-14 07:43:13,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:13,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:13,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:13,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 07:43:13,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:13,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:13,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 07:43:13,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:13,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:13,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:13,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:13,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 07:43:13,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:13,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-14 07:43:13,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:13,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:13,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:13,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 07:43:13,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:13,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:13,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 07:43:13,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:13,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:13,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:13,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:13,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 07:43:13,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:13,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-14 07:43:13,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:13,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:13,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:13,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 07:43:13,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:13,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:13,674 INFO L134 CoverageAnalysis]: Checked inductivity of 989 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 940 trivial. 0 not checked. [2020-10-14 07:43:13,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924311195] [2020-10-14 07:43:13,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:43:13,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 07:43:13,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945914873] [2020-10-14 07:43:13,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 07:43:13,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:43:13,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 07:43:13,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:43:13,676 INFO L87 Difference]: Start difference. First operand 71 states and 83 transitions. Second operand 11 states. [2020-10-14 07:43:13,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:43:13,772 INFO L93 Difference]: Finished difference Result 124 states and 148 transitions. [2020-10-14 07:43:13,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 07:43:13,775 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 128 [2020-10-14 07:43:13,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:43:13,776 INFO L225 Difference]: With dead ends: 124 [2020-10-14 07:43:13,776 INFO L226 Difference]: Without dead ends: 74 [2020-10-14 07:43:13,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:43:13,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-14 07:43:13,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-14 07:43:13,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-14 07:43:13,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 85 transitions. [2020-10-14 07:43:13,788 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 85 transitions. Word has length 128 [2020-10-14 07:43:13,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:43:13,788 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 85 transitions. [2020-10-14 07:43:13,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 07:43:13,789 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 85 transitions. [2020-10-14 07:43:13,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-14 07:43:13,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:43:13,790 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 8, 8, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:43:13,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 07:43:13,791 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:43:13,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:43:13,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1326329028, now seen corresponding path program 19 times [2020-10-14 07:43:13,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:43:13,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430822830] [2020-10-14 07:43:13,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:43:13,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:13,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:13,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:13,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:14,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:18,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:18,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 07:43:18,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:43:18,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 07:43:18,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:18,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:18,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 07:43:18,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-14 07:43:18,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 07:43:18,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:18,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:43:18,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:18,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:18,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:18,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:43:18,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:18,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:43:18,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:18,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:18,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:18,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:18,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:18,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:18,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:43:18,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:18,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:18,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:19,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:19,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 07:43:19,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:19,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-14 07:43:19,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:19,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:19,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:19,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:19,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:19,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:19,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 07:43:19,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:19,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:19,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:19,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:19,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 07:43:19,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:19,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 07:43:19,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:19,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:19,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:19,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:19,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:19,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:19,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 07:43:19,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:19,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:19,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:19,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:19,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 07:43:19,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:19,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-14 07:43:19,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:19,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:19,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:19,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 07:43:19,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:19,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:19,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1004 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 979 trivial. 0 not checked. [2020-10-14 07:43:19,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1430822830] [2020-10-14 07:43:19,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:43:19,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 07:43:19,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207475023] [2020-10-14 07:43:19,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 07:43:19,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:43:19,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 07:43:19,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:43:19,396 INFO L87 Difference]: Start difference. First operand 73 states and 85 transitions. Second operand 9 states. [2020-10-14 07:43:19,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:43:19,508 INFO L93 Difference]: Finished difference Result 111 states and 132 transitions. [2020-10-14 07:43:19,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 07:43:19,508 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 130 [2020-10-14 07:43:19,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:43:19,509 INFO L225 Difference]: With dead ends: 111 [2020-10-14 07:43:19,509 INFO L226 Difference]: Without dead ends: 76 [2020-10-14 07:43:19,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:43:19,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-14 07:43:19,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-14 07:43:19,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-14 07:43:19,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 87 transitions. [2020-10-14 07:43:19,519 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 87 transitions. Word has length 130 [2020-10-14 07:43:19,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:43:19,519 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 87 transitions. [2020-10-14 07:43:19,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 07:43:19,519 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 87 transitions. [2020-10-14 07:43:19,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-14 07:43:19,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:43:19,521 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 8, 8, 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] [2020-10-14 07:43:19,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 07:43:19,521 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:43:19,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:43:19,522 INFO L82 PathProgramCache]: Analyzing trace with hash -2071808390, now seen corresponding path program 20 times [2020-10-14 07:43:19,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:43:19,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795606016] [2020-10-14 07:43:19,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:43:19,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:19,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:19,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:19,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:20,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:24,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:24,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 07:43:24,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:43:24,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-14 07:43:24,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:24,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:24,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 07:43:24,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 07:43:24,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 07:43:24,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:24,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:43:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:24,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:24,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:24,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:43:24,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:24,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:43:24,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:24,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:24,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:24,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:24,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:24,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:43:24,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:43:24,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:24,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:24,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:24,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 07:43:24,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:24,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 07:43:24,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:24,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:24,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 07:43:24,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:43:24,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 07:43:24,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:24,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 07:43:24,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:24,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:24,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:24,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:24,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 07:43:24,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:24,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-14 07:43:24,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:24,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:24,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:24,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 07:43:24,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:24,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:24,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 07:43:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:24,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:24,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:25,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:25,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 07:43:25,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:25,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-14 07:43:25,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:25,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:25,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:25,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 07:43:25,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:25,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:25,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1015 backedges. 0 proven. 516 refuted. 0 times theorem prover too weak. 499 trivial. 0 not checked. [2020-10-14 07:43:25,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795606016] [2020-10-14 07:43:25,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:43:25,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 07:43:25,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161467308] [2020-10-14 07:43:25,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 07:43:25,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:43:25,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 07:43:25,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 07:43:25,097 INFO L87 Difference]: Start difference. First operand 75 states and 87 transitions. Second operand 12 states. [2020-10-14 07:43:25,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:43:25,345 INFO L93 Difference]: Finished difference Result 131 states and 159 transitions. [2020-10-14 07:43:25,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 07:43:25,346 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 132 [2020-10-14 07:43:25,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:43:25,347 INFO L225 Difference]: With dead ends: 131 [2020-10-14 07:43:25,347 INFO L226 Difference]: Without dead ends: 80 [2020-10-14 07:43:25,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-14 07:43:25,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-14 07:43:25,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2020-10-14 07:43:25,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-14 07:43:25,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 91 transitions. [2020-10-14 07:43:25,353 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 91 transitions. Word has length 132 [2020-10-14 07:43:25,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:43:25,354 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 91 transitions. [2020-10-14 07:43:25,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 07:43:25,354 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 91 transitions. [2020-10-14 07:43:25,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-14 07:43:25,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:43:25,355 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 8, 8, 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] [2020-10-14 07:43:25,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 07:43:25,356 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:43:25,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:43:25,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1936134683, now seen corresponding path program 21 times [2020-10-14 07:43:25,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:43:25,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986763270] [2020-10-14 07:43:25,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:43:25,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:25,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:25,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:25,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:25,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:30,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:30,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 07:43:30,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:43:30,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-14 07:43:30,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:30,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:30,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 07:43:30,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 07:43:30,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 07:43:30,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:30,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:43:30,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:30,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:30,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:30,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:43:30,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:30,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:43:30,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:30,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:30,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:30,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:30,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:30,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:30,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:43:30,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:30,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:30,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:30,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 07:43:30,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:30,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-14 07:43:30,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:30,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:30,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 07:43:30,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:43:30,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 07:43:30,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:30,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 07:43:30,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:30,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:30,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:30,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:30,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 07:43:30,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:30,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-14 07:43:30,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:30,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:30,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:30,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 07:43:30,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:30,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:30,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-14 07:43:30,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:30,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:30,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:30,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:30,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 07:43:30,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:30,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-14 07:43:30,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:30,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:30,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:30,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 07:43:30,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:30,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:31,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1249 backedges. 0 proven. 647 refuted. 0 times theorem prover too weak. 602 trivial. 0 not checked. [2020-10-14 07:43:31,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986763270] [2020-10-14 07:43:31,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:43:31,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 07:43:31,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538988588] [2020-10-14 07:43:31,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 07:43:31,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:43:31,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 07:43:31,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 07:43:31,008 INFO L87 Difference]: Start difference. First operand 78 states and 91 transitions. Second operand 13 states. [2020-10-14 07:43:31,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:43:31,303 INFO L93 Difference]: Finished difference Result 137 states and 167 transitions. [2020-10-14 07:43:31,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 07:43:31,304 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 141 [2020-10-14 07:43:31,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:43:31,305 INFO L225 Difference]: With dead ends: 137 [2020-10-14 07:43:31,305 INFO L226 Difference]: Without dead ends: 83 [2020-10-14 07:43:31,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-14 07:43:31,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-14 07:43:31,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2020-10-14 07:43:31,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-14 07:43:31,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 95 transitions. [2020-10-14 07:43:31,314 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 95 transitions. Word has length 141 [2020-10-14 07:43:31,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:43:31,315 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 95 transitions. [2020-10-14 07:43:31,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 07:43:31,315 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 95 transitions. [2020-10-14 07:43:31,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-14 07:43:31,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:43:31,317 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 8, 8, 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] [2020-10-14 07:43:31,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 07:43:31,318 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:43:31,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:43:31,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1085904282, now seen corresponding path program 22 times [2020-10-14 07:43:31,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:43:31,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534417720] [2020-10-14 07:43:31,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:43:31,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:31,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:31,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:31,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:32,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:36,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:36,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 07:43:36,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:43:36,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 07:43:36,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:36,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:36,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 07:43:36,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:43:36,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 07:43:36,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:36,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:43:36,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:36,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:36,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:36,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:43:36,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:36,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:43:36,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:36,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:36,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:36,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:36,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:36,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:36,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:43:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:36,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:36,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:36,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:36,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:43:36,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:36,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-14 07:43:36,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:36,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:36,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:36,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 07:43:36,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:36,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:36,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 07:43:36,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:36,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:36,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:36,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:36,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:43:36,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:36,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-14 07:43:36,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:36,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:36,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:36,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 07:43:36,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:36,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:36,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-14 07:43:36,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:36,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:36,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:37,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:37,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:43:37,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:37,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-14 07:43:37,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:37,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:37,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:37,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 07:43:37,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:37,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:37,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 1446 trivial. 0 not checked. [2020-10-14 07:43:37,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534417720] [2020-10-14 07:43:37,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:43:37,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 07:43:37,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684708614] [2020-10-14 07:43:37,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 07:43:37,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:43:37,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 07:43:37,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 07:43:37,157 INFO L87 Difference]: Start difference. First operand 81 states and 95 transitions. Second operand 12 states. [2020-10-14 07:43:37,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:43:37,271 INFO L93 Difference]: Finished difference Result 142 states and 170 transitions. [2020-10-14 07:43:37,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 07:43:37,272 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 150 [2020-10-14 07:43:37,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:43:37,273 INFO L225 Difference]: With dead ends: 142 [2020-10-14 07:43:37,273 INFO L226 Difference]: Without dead ends: 84 [2020-10-14 07:43:37,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 07:43:37,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-14 07:43:37,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-14 07:43:37,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-14 07:43:37,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 97 transitions. [2020-10-14 07:43:37,284 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 97 transitions. Word has length 150 [2020-10-14 07:43:37,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:43:37,285 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 97 transitions. [2020-10-14 07:43:37,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 07:43:37,285 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 97 transitions. [2020-10-14 07:43:37,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 07:43:37,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:43:37,287 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 9, 9, 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] [2020-10-14 07:43:37,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 07:43:37,287 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:43:37,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:43:37,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1141189700, now seen corresponding path program 23 times [2020-10-14 07:43:37,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:43:37,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771507326] [2020-10-14 07:43:37,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:43:37,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:37,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:37,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:37,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:37,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:42,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:42,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 07:43:42,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:43:42,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-14 07:43:42,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:42,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:42,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 07:43:42,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:43:42,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 07:43:42,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:42,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:43:42,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:42,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:42,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:42,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:43:42,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:42,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:43:42,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:42,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:42,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:42,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:42,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:42,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:42,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 07:43:42,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:42,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:42,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:42,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:42,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:43:42,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:42,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-10-14 07:43:42,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:42,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:42,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:42,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 07:43:42,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:42,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:43:42,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 07:43:42,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:42,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:42,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:43,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:43,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:43:43,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:43,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-10-14 07:43:43,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:43,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:43,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:43,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 07:43:43,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:43,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:43,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-14 07:43:43,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:43,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:43,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:43,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:43,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:43:43,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:43,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-14 07:43:43,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:43,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:43,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:43,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 07:43:43,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:43,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:43,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1527 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 1446 trivial. 0 not checked. [2020-10-14 07:43:43,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771507326] [2020-10-14 07:43:43,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:43:43,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 07:43:43,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791745909] [2020-10-14 07:43:43,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 07:43:43,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:43:43,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 07:43:43,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 07:43:43,368 INFO L87 Difference]: Start difference. First operand 83 states and 97 transitions. Second operand 13 states. [2020-10-14 07:43:43,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:43:43,497 INFO L93 Difference]: Finished difference Result 144 states and 172 transitions. [2020-10-14 07:43:43,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 07:43:43,497 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-10-14 07:43:43,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:43:43,498 INFO L225 Difference]: With dead ends: 144 [2020-10-14 07:43:43,498 INFO L226 Difference]: Without dead ends: 86 [2020-10-14 07:43:43,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 07:43:43,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-14 07:43:43,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-14 07:43:43,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-14 07:43:43,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 99 transitions. [2020-10-14 07:43:43,503 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 99 transitions. Word has length 152 [2020-10-14 07:43:43,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:43:43,504 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 99 transitions. [2020-10-14 07:43:43,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 07:43:43,504 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 99 transitions. [2020-10-14 07:43:43,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-14 07:43:43,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:43:43,505 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 10, 10, 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] [2020-10-14 07:43:43,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 07:43:43,505 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:43:43,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:43:43,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1810174302, now seen corresponding path program 24 times [2020-10-14 07:43:43,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:43:43,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214130075] [2020-10-14 07:43:43,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:43:43,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:43,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:43,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:43,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:44,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:48,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:48,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 07:43:48,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:43:48,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 07:43:48,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:48,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:48,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 07:43:48,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 07:43:48,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 07:43:48,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:48,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:43:48,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:48,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:48,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:48,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:43:48,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:48,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:43:48,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:48,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:48,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:48,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:48,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:48,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:48,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 07:43:48,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:48,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:48,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:48,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:48,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:43:48,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:48,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-14 07:43:48,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:48,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:48,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:48,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:48,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:48,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:48,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 07:43:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:48,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:48,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:49,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:49,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:43:49,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:49,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-14 07:43:49,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:49,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:49,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:49,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:49,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:49,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:49,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-14 07:43:49,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:49,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:49,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:49,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:49,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:43:49,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:49,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-14 07:43:49,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:49,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:49,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:49,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 07:43:49,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:49,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:49,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1546 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1510 trivial. 0 not checked. [2020-10-14 07:43:49,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214130075] [2020-10-14 07:43:49,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:43:49,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 07:43:49,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082099423] [2020-10-14 07:43:49,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 07:43:49,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:43:49,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 07:43:49,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 07:43:49,269 INFO L87 Difference]: Start difference. First operand 85 states and 99 transitions. Second operand 10 states. [2020-10-14 07:43:49,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:43:49,376 INFO L93 Difference]: Finished difference Result 129 states and 154 transitions. [2020-10-14 07:43:49,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 07:43:49,377 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 154 [2020-10-14 07:43:49,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:43:49,378 INFO L225 Difference]: With dead ends: 129 [2020-10-14 07:43:49,378 INFO L226 Difference]: Without dead ends: 88 [2020-10-14 07:43:49,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 07:43:49,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-14 07:43:49,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-14 07:43:49,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-14 07:43:49,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 101 transitions. [2020-10-14 07:43:49,384 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 101 transitions. Word has length 154 [2020-10-14 07:43:49,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:43:49,384 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 101 transitions. [2020-10-14 07:43:49,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 07:43:49,384 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 101 transitions. [2020-10-14 07:43:49,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-14 07:43:49,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:43:49,386 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 10, 10, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:43:49,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 07:43:49,386 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:43:49,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:43:49,386 INFO L82 PathProgramCache]: Analyzing trace with hash 641373596, now seen corresponding path program 25 times [2020-10-14 07:43:49,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:43:49,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597245875] [2020-10-14 07:43:49,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:43:49,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:49,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:49,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:49,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:50,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:54,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:54,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-14 07:43:54,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:43:54,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-14 07:43:54,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:54,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:54,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 07:43:54,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-14 07:43:54,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 07:43:54,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:54,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:43:54,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:54,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:54,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:54,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:43:54,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:54,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:43:54,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:54,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:54,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:54,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:54,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:54,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:54,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 07:43:54,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:54,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:54,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:54,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:54,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:43:54,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:54,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-14 07:43:54,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:54,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:54,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:54,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:43:54,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:54,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:54,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 07:43:54,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:54,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:54,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:54,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:43:54,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:43:54,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-14 07:43:54,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:54,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:54,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 07:43:54,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:43:54,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 07:43:54,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:54,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 07:43:54,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:54,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:54,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:55,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:43:55,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:43:55,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:43:55,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-14 07:43:55,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:43:55,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:43:55,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:43:55,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 07:43:55,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:43:55,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:43:55,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1559 backedges. 324 proven. 469 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked. [2020-10-14 07:43:55,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597245875] [2020-10-14 07:43:55,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:43:55,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 07:43:55,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670284284] [2020-10-14 07:43:55,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 07:43:55,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:43:55,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 07:43:55,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 07:43:55,178 INFO L87 Difference]: Start difference. First operand 87 states and 101 transitions. Second operand 14 states. [2020-10-14 07:43:55,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:43:55,501 INFO L93 Difference]: Finished difference Result 151 states and 183 transitions. [2020-10-14 07:43:55,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 07:43:55,502 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 156 [2020-10-14 07:43:55,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:43:55,503 INFO L225 Difference]: With dead ends: 151 [2020-10-14 07:43:55,503 INFO L226 Difference]: Without dead ends: 92 [2020-10-14 07:43:55,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-14 07:43:55,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-14 07:43:55,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2020-10-14 07:43:55,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-14 07:43:55,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 105 transitions. [2020-10-14 07:43:55,510 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 105 transitions. Word has length 156 [2020-10-14 07:43:55,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:43:55,510 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 105 transitions. [2020-10-14 07:43:55,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 07:43:55,511 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 105 transitions. [2020-10-14 07:43:55,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-14 07:43:55,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:43:55,512 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 10, 10, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:43:55,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 07:43:55,512 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:43:55,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:43:55,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1803553593, now seen corresponding path program 26 times [2020-10-14 07:43:55,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:43:55,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308114450] [2020-10-14 07:43:55,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:43:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:43:55,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:55,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:55,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:43:56,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:00,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:00,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-14 07:44:00,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:44:00,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-14 07:44:00,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:00,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:00,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 07:44:00,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:44:00,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 07:44:00,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:00,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:44:00,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:00,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:00,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:00,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:44:00,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:00,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 07:44:00,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:00,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:00,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:00,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:00,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:00,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:00,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 07:44:00,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:00,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:00,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:00,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:00,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 07:44:00,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:00,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-14 07:44:00,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:00,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:00,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:00,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-14 07:44:00,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:00,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:00,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 07:44:00,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:00,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:00,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:01,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:01,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 07:44:01,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:01,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-14 07:44:01,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:01,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:01,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:01,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-14 07:44:01,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:01,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:01,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-14 07:44:01,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:01,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:01,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:01,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:01,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 07:44:01,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:01,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-14 07:44:01,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:01,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:01,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:01,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-14 07:44:01,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:01,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:01,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1847 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1747 trivial. 0 not checked. [2020-10-14 07:44:01,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308114450] [2020-10-14 07:44:01,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:44:01,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 07:44:01,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210408137] [2020-10-14 07:44:01,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 07:44:01,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:44:01,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 07:44:01,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 07:44:01,574 INFO L87 Difference]: Start difference. First operand 90 states and 105 transitions. Second operand 14 states. [2020-10-14 07:44:01,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:44:01,679 INFO L93 Difference]: Finished difference Result 156 states and 186 transitions. [2020-10-14 07:44:01,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 07:44:01,680 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 165 [2020-10-14 07:44:01,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:44:01,681 INFO L225 Difference]: With dead ends: 156 [2020-10-14 07:44:01,681 INFO L226 Difference]: Without dead ends: 93 [2020-10-14 07:44:01,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 07:44:01,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-14 07:44:01,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2020-10-14 07:44:01,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-14 07:44:01,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 107 transitions. [2020-10-14 07:44:01,687 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 107 transitions. Word has length 165 [2020-10-14 07:44:01,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:44:01,687 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 107 transitions. [2020-10-14 07:44:01,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 07:44:01,687 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 107 transitions. [2020-10-14 07:44:01,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-14 07:44:01,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:44:01,688 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 11, 11, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:44:01,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 07:44:01,689 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:44:01,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:44:01,689 INFO L82 PathProgramCache]: Analyzing trace with hash 792364247, now seen corresponding path program 27 times [2020-10-14 07:44:01,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:44:01,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2062688562] [2020-10-14 07:44:01,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:44:01,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:01,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:01,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:01,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:02,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:06,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:06,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-14 07:44:06,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:44:06,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 07:44:06,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:06,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:06,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 07:44:06,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 118 [2020-10-14 07:44:06,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 07:44:06,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:06,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:44:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:06,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:06,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:06,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:44:06,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:06,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 07:44:06,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:06,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:06,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:06,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:06,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:06,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:06,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 07:44:06,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:06,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:06,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:07,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:07,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 07:44:07,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:07,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-14 07:44:07,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:07,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:07,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:07,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:07,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:07,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:07,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 07:44:07,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:07,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:07,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:07,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:07,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 07:44:07,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:07,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-14 07:44:07,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:07,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:07,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:07,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:07,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:07,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:07,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-14 07:44:07,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:07,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:07,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:07,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:07,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 07:44:07,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:07,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-14 07:44:07,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:07,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:07,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:07,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-14 07:44:07,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:07,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:07,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1868 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1819 trivial. 0 not checked. [2020-10-14 07:44:07,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2062688562] [2020-10-14 07:44:07,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:44:07,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 07:44:07,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615924514] [2020-10-14 07:44:07,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 07:44:07,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:44:07,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 07:44:07,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:44:07,554 INFO L87 Difference]: Start difference. First operand 92 states and 107 transitions. Second operand 11 states. [2020-10-14 07:44:07,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:44:07,686 INFO L93 Difference]: Finished difference Result 139 states and 166 transitions. [2020-10-14 07:44:07,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 07:44:07,687 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 167 [2020-10-14 07:44:07,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:44:07,688 INFO L225 Difference]: With dead ends: 139 [2020-10-14 07:44:07,688 INFO L226 Difference]: Without dead ends: 95 [2020-10-14 07:44:07,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:44:07,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-14 07:44:07,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2020-10-14 07:44:07,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-14 07:44:07,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 109 transitions. [2020-10-14 07:44:07,695 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 109 transitions. Word has length 167 [2020-10-14 07:44:07,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:44:07,695 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 109 transitions. [2020-10-14 07:44:07,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 07:44:07,696 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 109 transitions. [2020-10-14 07:44:07,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-14 07:44:07,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:44:07,697 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 11, 11, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:44:07,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 07:44:07,697 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:44:07,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:44:07,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1288881319, now seen corresponding path program 28 times [2020-10-14 07:44:07,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:44:07,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479990809] [2020-10-14 07:44:07,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:44:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:07,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:07,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:07,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:08,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:12,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:12,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-14 07:44:12,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:44:12,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-14 07:44:12,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:12,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:12,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 07:44:12,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 07:44:12,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 07:44:12,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:12,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:44:12,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:12,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:12,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:12,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:44:12,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:12,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:44:12,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:12,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:12,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:12,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:12,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:12,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:12,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 07:44:12,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:12,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:12,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:13,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:13,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 07:44:13,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:13,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-10-14 07:44:13,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:13,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:13,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:13,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:13,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:13,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:13,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 07:44:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:13,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:13,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:13,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 07:44:13,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:13,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-14 07:44:13,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:13,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:13,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 07:44:13,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:44:13,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 07:44:13,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:13,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-14 07:44:13,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:13,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:13,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:13,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:13,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 07:44:13,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:13,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-14 07:44:13,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:13,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:13,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:13,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-14 07:44:13,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:13,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:13,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1883 backedges. 389 proven. 565 refuted. 0 times theorem prover too weak. 929 trivial. 0 not checked. [2020-10-14 07:44:13,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479990809] [2020-10-14 07:44:13,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:44:13,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 07:44:13,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256410546] [2020-10-14 07:44:13,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 07:44:13,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:44:13,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 07:44:13,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-14 07:44:13,673 INFO L87 Difference]: Start difference. First operand 94 states and 109 transitions. Second operand 15 states. [2020-10-14 07:44:13,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:44:13,993 INFO L93 Difference]: Finished difference Result 163 states and 197 transitions. [2020-10-14 07:44:13,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 07:44:13,993 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 169 [2020-10-14 07:44:13,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:44:13,994 INFO L225 Difference]: With dead ends: 163 [2020-10-14 07:44:13,995 INFO L226 Difference]: Without dead ends: 99 [2020-10-14 07:44:13,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-14 07:44:13,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-14 07:44:14,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2020-10-14 07:44:14,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-14 07:44:14,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 113 transitions. [2020-10-14 07:44:14,003 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 113 transitions. Word has length 169 [2020-10-14 07:44:14,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:44:14,003 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 113 transitions. [2020-10-14 07:44:14,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 07:44:14,004 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 113 transitions. [2020-10-14 07:44:14,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-14 07:44:14,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:44:14,005 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 11, 11, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:44:14,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 07:44:14,005 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:44:14,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:44:14,006 INFO L82 PathProgramCache]: Analyzing trace with hash -982631652, now seen corresponding path program 29 times [2020-10-14 07:44:14,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:44:14,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [84307136] [2020-10-14 07:44:14,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:44:14,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:14,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:14,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:14,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:14,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:19,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:19,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-14 07:44:19,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:44:19,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 07:44:19,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:19,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:19,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 07:44:19,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-14 07:44:19,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 07:44:19,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:19,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:44:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:19,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:19,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:19,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:44:19,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:19,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:44:19,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:19,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:19,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:19,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:19,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:19,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:19,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 07:44:19,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:19,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:19,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:19,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:19,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 07:44:19,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:19,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-14 07:44:19,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:19,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:19,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:19,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:19,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:19,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:19,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 07:44:19,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:19,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:19,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:19,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 07:44:19,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:19,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-14 07:44:19,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:19,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:19,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 07:44:19,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:44:19,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 07:44:19,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:19,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-14 07:44:19,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:19,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:19,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:20,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:20,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 07:44:20,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:20,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-14 07:44:20,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:20,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:20,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:20,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 07:44:20,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:20,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:20,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2198 backedges. 460 proven. 670 refuted. 0 times theorem prover too weak. 1068 trivial. 0 not checked. [2020-10-14 07:44:20,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [84307136] [2020-10-14 07:44:20,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:44:20,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 07:44:20,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604120717] [2020-10-14 07:44:20,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 07:44:20,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:44:20,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 07:44:20,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-14 07:44:20,113 INFO L87 Difference]: Start difference. First operand 97 states and 113 transitions. Second operand 16 states. [2020-10-14 07:44:20,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:44:20,463 INFO L93 Difference]: Finished difference Result 169 states and 205 transitions. [2020-10-14 07:44:20,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 07:44:20,464 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 178 [2020-10-14 07:44:20,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:44:20,465 INFO L225 Difference]: With dead ends: 169 [2020-10-14 07:44:20,466 INFO L226 Difference]: Without dead ends: 102 [2020-10-14 07:44:20,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-14 07:44:20,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-14 07:44:20,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2020-10-14 07:44:20,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-14 07:44:20,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 117 transitions. [2020-10-14 07:44:20,474 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 117 transitions. Word has length 178 [2020-10-14 07:44:20,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:44:20,474 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 117 transitions. [2020-10-14 07:44:20,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 07:44:20,475 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 117 transitions. [2020-10-14 07:44:20,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-14 07:44:20,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:44:20,476 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 11, 11, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:44:20,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 07:44:20,476 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:44:20,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:44:20,477 INFO L82 PathProgramCache]: Analyzing trace with hash 890505145, now seen corresponding path program 30 times [2020-10-14 07:44:20,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:44:20,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009376787] [2020-10-14 07:44:20,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:44:20,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:20,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:20,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:20,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:21,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:25,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:25,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-14 07:44:25,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:44:25,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5074 [2020-10-14 07:44:25,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:25,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:25,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 07:44:25,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:44:25,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 07:44:25,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:25,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:44:25,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:25,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:25,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:25,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:44:25,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:25,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:44:25,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:25,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:25,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:25,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:25,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:25,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:25,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 07:44:25,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:25,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:25,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:26,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:26,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 07:44:26,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:26,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-10-14 07:44:26,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:26,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:26,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:26,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 07:44:26,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:26,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:26,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 07:44:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:26,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:26,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:26,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:26,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 07:44:26,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:26,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 389 [2020-10-14 07:44:26,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:26,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:26,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:26,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 07:44:26,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:26,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:26,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 07:44:26,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:26,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:26,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:26,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:26,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 07:44:26,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:26,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 420 [2020-10-14 07:44:26,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:26,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:26,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:26,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 07:44:26,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:26,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:26,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2540 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 2419 trivial. 0 not checked. [2020-10-14 07:44:26,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2009376787] [2020-10-14 07:44:26,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:44:26,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 07:44:26,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959965208] [2020-10-14 07:44:26,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 07:44:26,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:44:26,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 07:44:26,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-14 07:44:26,943 INFO L87 Difference]: Start difference. First operand 100 states and 117 transitions. Second operand 15 states. [2020-10-14 07:44:27,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:44:27,095 INFO L93 Difference]: Finished difference Result 174 states and 208 transitions. [2020-10-14 07:44:27,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 07:44:27,096 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 187 [2020-10-14 07:44:27,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:44:27,097 INFO L225 Difference]: With dead ends: 174 [2020-10-14 07:44:27,097 INFO L226 Difference]: Without dead ends: 103 [2020-10-14 07:44:27,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-14 07:44:27,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-14 07:44:27,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2020-10-14 07:44:27,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-14 07:44:27,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 119 transitions. [2020-10-14 07:44:27,104 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 119 transitions. Word has length 187 [2020-10-14 07:44:27,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:44:27,105 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 119 transitions. [2020-10-14 07:44:27,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 07:44:27,105 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 119 transitions. [2020-10-14 07:44:27,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-14 07:44:27,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:44:27,106 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 12, 12, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:44:27,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 07:44:27,107 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:44:27,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:44:27,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1297766103, now seen corresponding path program 31 times [2020-10-14 07:44:27,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:44:27,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731724251] [2020-10-14 07:44:27,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:44:27,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:27,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:27,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:27,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:27,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:32,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:32,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 07:44:32,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:44:32,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-14 07:44:32,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:32,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:32,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 07:44:32,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:44:32,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 07:44:32,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:32,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:44:32,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:32,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:32,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:32,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:44:32,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:32,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:44:32,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:32,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:32,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:32,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:32,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:32,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:32,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 07:44:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:32,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:32,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:32,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:32,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 07:44:32,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:32,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-10-14 07:44:32,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:32,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:32,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:32,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 07:44:32,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:32,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:32,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 07:44:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:32,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:32,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:33,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:33,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 07:44:33,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:33,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-10-14 07:44:33,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:33,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:33,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:33,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 07:44:33,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:33,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:33,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-14 07:44:33,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:33,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:33,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:33,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:33,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 07:44:33,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:33,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 394 [2020-10-14 07:44:33,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:33,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:33,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:33,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 07:44:33,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:33,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:33,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2563 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 2419 trivial. 0 not checked. [2020-10-14 07:44:33,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731724251] [2020-10-14 07:44:33,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:44:33,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 07:44:33,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85317334] [2020-10-14 07:44:33,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 07:44:33,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:44:33,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 07:44:33,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-14 07:44:33,451 INFO L87 Difference]: Start difference. First operand 102 states and 119 transitions. Second operand 16 states. [2020-10-14 07:44:33,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:44:33,612 INFO L93 Difference]: Finished difference Result 176 states and 210 transitions. [2020-10-14 07:44:33,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 07:44:33,612 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 189 [2020-10-14 07:44:33,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:44:33,613 INFO L225 Difference]: With dead ends: 176 [2020-10-14 07:44:33,613 INFO L226 Difference]: Without dead ends: 105 [2020-10-14 07:44:33,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-14 07:44:33,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-14 07:44:33,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 104. [2020-10-14 07:44:33,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-14 07:44:33,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 121 transitions. [2020-10-14 07:44:33,622 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 121 transitions. Word has length 189 [2020-10-14 07:44:33,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:44:33,622 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 121 transitions. [2020-10-14 07:44:33,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 07:44:33,622 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 121 transitions. [2020-10-14 07:44:33,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-14 07:44:33,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:44:33,623 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 13, 13, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:44:33,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 07:44:33,624 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:44:33,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:44:33,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1833522805, now seen corresponding path program 32 times [2020-10-14 07:44:33,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:44:33,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1145932203] [2020-10-14 07:44:33,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:44:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:33,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:33,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:33,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:34,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:38,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:38,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-14 07:44:38,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:44:38,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 07:44:38,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:38,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:38,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 07:44:38,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-10-14 07:44:38,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 07:44:38,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:38,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:44:38,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:38,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:38,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:38,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:44:38,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:38,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:44:38,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:38,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:38,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:38,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:38,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:38,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:38,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 07:44:38,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:38,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:38,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:39,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:39,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 07:44:39,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:39,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 379 [2020-10-14 07:44:39,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:39,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:39,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:39,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:39,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:39,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:39,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 07:44:39,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:39,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:39,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:39,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:39,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 07:44:39,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:39,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 373 [2020-10-14 07:44:39,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:39,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:39,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:39,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:39,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:39,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:39,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-14 07:44:39,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:39,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:39,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:39,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:39,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 07:44:39,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:39,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 380 [2020-10-14 07:44:39,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:39,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:39,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:39,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 07:44:39,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:39,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:39,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2588 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 2524 trivial. 0 not checked. [2020-10-14 07:44:39,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1145932203] [2020-10-14 07:44:39,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:44:39,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 07:44:39,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044425127] [2020-10-14 07:44:39,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 07:44:39,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:44:39,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 07:44:39,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 07:44:39,911 INFO L87 Difference]: Start difference. First operand 104 states and 121 transitions. Second operand 12 states. [2020-10-14 07:44:40,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:44:40,041 INFO L93 Difference]: Finished difference Result 157 states and 188 transitions. [2020-10-14 07:44:40,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 07:44:40,042 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 191 [2020-10-14 07:44:40,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:44:40,044 INFO L225 Difference]: With dead ends: 157 [2020-10-14 07:44:40,044 INFO L226 Difference]: Without dead ends: 107 [2020-10-14 07:44:40,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 07:44:40,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-14 07:44:40,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 106. [2020-10-14 07:44:40,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-14 07:44:40,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 123 transitions. [2020-10-14 07:44:40,050 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 123 transitions. Word has length 191 [2020-10-14 07:44:40,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:44:40,050 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 123 transitions. [2020-10-14 07:44:40,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 07:44:40,051 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 123 transitions. [2020-10-14 07:44:40,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-14 07:44:40,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:44:40,052 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 13, 13, 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] [2020-10-14 07:44:40,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 07:44:40,052 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:44:40,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:44:40,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1701850103, now seen corresponding path program 33 times [2020-10-14 07:44:40,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:44:40,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482328469] [2020-10-14 07:44:40,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:44:40,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:40,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:40,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:40,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:41,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:45,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:45,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-14 07:44:45,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:44:45,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5130 [2020-10-14 07:44:45,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:45,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:45,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 07:44:45,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 07:44:45,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 07:44:45,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:45,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:44:45,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:45,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:45,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:45,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:44:45,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:45,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:44:45,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:45,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:45,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:45,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:45,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:45,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:45,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 07:44:45,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:45,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:45,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:45,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 07:44:45,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:45,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-14 07:44:45,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:45,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:45,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 07:44:45,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:44:45,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 07:44:45,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:45,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 07:44:45,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:45,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:45,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:45,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:45,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 07:44:45,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:45,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-10-14 07:44:45,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:45,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:45,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:45,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 07:44:45,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:45,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:45,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-14 07:44:45,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:46,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:46,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:46,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:46,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 07:44:46,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:46,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351 [2020-10-14 07:44:46,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:46,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:46,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:46,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 07:44:46,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:46,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:46,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2605 backedges. 0 proven. 1321 refuted. 0 times theorem prover too weak. 1284 trivial. 0 not checked. [2020-10-14 07:44:46,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482328469] [2020-10-14 07:44:46,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:44:46,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 07:44:46,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754759315] [2020-10-14 07:44:46,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 07:44:46,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:44:46,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 07:44:46,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-14 07:44:46,374 INFO L87 Difference]: Start difference. First operand 106 states and 123 transitions. Second operand 17 states. [2020-10-14 07:44:46,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:44:46,784 INFO L93 Difference]: Finished difference Result 183 states and 221 transitions. [2020-10-14 07:44:46,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 07:44:46,784 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 193 [2020-10-14 07:44:46,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:44:46,786 INFO L225 Difference]: With dead ends: 183 [2020-10-14 07:44:46,786 INFO L226 Difference]: Without dead ends: 111 [2020-10-14 07:44:46,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-14 07:44:46,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-14 07:44:46,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2020-10-14 07:44:46,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-14 07:44:46,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 127 transitions. [2020-10-14 07:44:46,793 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 127 transitions. Word has length 193 [2020-10-14 07:44:46,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:44:46,793 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 127 transitions. [2020-10-14 07:44:46,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 07:44:46,793 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 127 transitions. [2020-10-14 07:44:46,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-14 07:44:46,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:44:46,795 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 13, 13, 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] [2020-10-14 07:44:46,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 07:44:46,795 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:44:46,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:44:46,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1842480322, now seen corresponding path program 34 times [2020-10-14 07:44:46,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:44:46,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1329070393] [2020-10-14 07:44:46,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:44:46,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:46,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:46,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:46,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:48,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:51,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:51,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-14 07:44:51,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:44:51,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5074 [2020-10-14 07:44:51,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:51,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:51,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 07:44:51,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:44:51,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 07:44:51,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:52,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:44:52,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:52,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:52,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:52,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:44:52,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:52,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:44:52,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:52,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:52,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:52,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:52,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:52,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:52,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 07:44:52,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:52,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:52,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:52,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:52,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 07:44:52,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:52,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 413 [2020-10-14 07:44:52,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:52,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:52,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:52,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 07:44:52,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:52,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:52,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 07:44:52,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:52,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:52,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:52,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:52,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 07:44:52,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:52,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-10-14 07:44:52,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:52,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:52,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:52,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 07:44:52,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:52,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:52,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-14 07:44:52,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:52,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:52,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:53,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:53,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 07:44:53,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:53,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 682 [2020-10-14 07:44:53,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:53,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:53,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:53,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 07:44:53,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:53,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:53,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2974 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 2805 trivial. 0 not checked. [2020-10-14 07:44:53,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1329070393] [2020-10-14 07:44:53,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:44:53,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 07:44:53,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398220150] [2020-10-14 07:44:53,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 07:44:53,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:44:53,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 07:44:53,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-14 07:44:53,528 INFO L87 Difference]: Start difference. First operand 109 states and 127 transitions. Second operand 17 states. [2020-10-14 07:44:53,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:44:53,630 INFO L93 Difference]: Finished difference Result 188 states and 224 transitions. [2020-10-14 07:44:53,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 07:44:53,631 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 202 [2020-10-14 07:44:53,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:44:53,632 INFO L225 Difference]: With dead ends: 188 [2020-10-14 07:44:53,632 INFO L226 Difference]: Without dead ends: 112 [2020-10-14 07:44:53,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-14 07:44:53,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-14 07:44:53,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2020-10-14 07:44:53,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-14 07:44:53,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 129 transitions. [2020-10-14 07:44:53,638 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 129 transitions. Word has length 202 [2020-10-14 07:44:53,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:44:53,639 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 129 transitions. [2020-10-14 07:44:53,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 07:44:53,639 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 129 transitions. [2020-10-14 07:44:53,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-14 07:44:53,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:44:53,640 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 14, 14, 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] [2020-10-14 07:44:53,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 07:44:53,640 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:44:53,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:44:53,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1749562272, now seen corresponding path program 35 times [2020-10-14 07:44:53,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:44:53,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078724742] [2020-10-14 07:44:53,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:44:53,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:53,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:53,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:53,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:55,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:58,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:58,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-14 07:44:58,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:44:58,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-14 07:44:58,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:58,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:58,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 07:44:58,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-14 07:44:58,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 07:44:58,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:58,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:44:58,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:58,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:58,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:58,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:44:58,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:44:58,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:44:58,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:58,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:58,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:58,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:58,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:58,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:58,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 07:44:58,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:58,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:58,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:59,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:59,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 07:44:59,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:59,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 432 [2020-10-14 07:44:59,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:59,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:59,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:59,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:59,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:59,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:59,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 07:44:59,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:59,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:59,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:59,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:44:59,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 07:44:59,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:44:59,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 478 [2020-10-14 07:44:59,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:44:59,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:44:59,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:44:59,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:44:59,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:44:59,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:44:59,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 07:44:59,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:44:59,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:44:59,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:00,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:00,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 07:45:00,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:45:00,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 430 [2020-10-14 07:45:00,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:00,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:00,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:00,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 07:45:00,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:00,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:00,216 INFO L134 CoverageAnalysis]: Checked inductivity of 3001 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 2920 trivial. 0 not checked. [2020-10-14 07:45:00,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078724742] [2020-10-14 07:45:00,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:45:00,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 07:45:00,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649894630] [2020-10-14 07:45:00,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 07:45:00,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:45:00,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 07:45:00,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 07:45:00,217 INFO L87 Difference]: Start difference. First operand 111 states and 129 transitions. Second operand 13 states. [2020-10-14 07:45:00,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:45:00,319 INFO L93 Difference]: Finished difference Result 167 states and 200 transitions. [2020-10-14 07:45:00,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 07:45:00,320 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 204 [2020-10-14 07:45:00,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:45:00,321 INFO L225 Difference]: With dead ends: 167 [2020-10-14 07:45:00,322 INFO L226 Difference]: Without dead ends: 114 [2020-10-14 07:45:00,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 07:45:00,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-14 07:45:00,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2020-10-14 07:45:00,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-14 07:45:00,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 131 transitions. [2020-10-14 07:45:00,327 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 131 transitions. Word has length 204 [2020-10-14 07:45:00,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:45:00,328 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 131 transitions. [2020-10-14 07:45:00,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 07:45:00,328 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 131 transitions. [2020-10-14 07:45:00,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-14 07:45:00,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:45:00,329 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 14, 14, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:45:00,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 07:45:00,330 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:45:00,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:45:00,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1950581986, now seen corresponding path program 36 times [2020-10-14 07:45:00,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:45:00,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459993771] [2020-10-14 07:45:00,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:45:00,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:00,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:00,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:00,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:02,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:05,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:05,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-14 07:45:05,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:45:05,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 07:45:05,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:05,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:05,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 07:45:05,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-14 07:45:05,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 07:45:05,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:05,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:45:05,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:05,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:05,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:05,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:45:05,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:45:05,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:45:05,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:05,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:05,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:05,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:45:05,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:05,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:05,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 07:45:05,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:05,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:05,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:05,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 07:45:05,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:45:05,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 345 [2020-10-14 07:45:05,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:05,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:05,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 07:45:05,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:45:05,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 07:45:05,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:05,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 07:45:05,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:05,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:05,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:06,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:06,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 07:45:06,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:45:06,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 434 [2020-10-14 07:45:06,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:06,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:06,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:06,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 07:45:06,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:06,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:06,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-14 07:45:06,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:06,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:06,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:06,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:06,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 07:45:06,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:45:06,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 430 [2020-10-14 07:45:06,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:06,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:06,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:06,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 07:45:06,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:06,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:06,819 INFO L134 CoverageAnalysis]: Checked inductivity of 3020 backedges. 0 proven. 1527 refuted. 0 times theorem prover too weak. 1493 trivial. 0 not checked. [2020-10-14 07:45:06,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459993771] [2020-10-14 07:45:06,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:45:06,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 07:45:06,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179532971] [2020-10-14 07:45:06,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 07:45:06,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:45:06,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 07:45:06,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-14 07:45:06,821 INFO L87 Difference]: Start difference. First operand 113 states and 131 transitions. Second operand 18 states. [2020-10-14 07:45:07,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:45:07,238 INFO L93 Difference]: Finished difference Result 195 states and 235 transitions. [2020-10-14 07:45:07,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 07:45:07,238 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 206 [2020-10-14 07:45:07,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:45:07,239 INFO L225 Difference]: With dead ends: 195 [2020-10-14 07:45:07,239 INFO L226 Difference]: Without dead ends: 118 [2020-10-14 07:45:07,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 07:45:07,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-14 07:45:07,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2020-10-14 07:45:07,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-14 07:45:07,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 135 transitions. [2020-10-14 07:45:07,246 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 135 transitions. Word has length 206 [2020-10-14 07:45:07,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:45:07,246 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 135 transitions. [2020-10-14 07:45:07,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 07:45:07,246 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 135 transitions. [2020-10-14 07:45:07,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-14 07:45:07,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:45:07,248 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 14, 14, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:45:07,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 07:45:07,248 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:45:07,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:45:07,249 INFO L82 PathProgramCache]: Analyzing trace with hash -906757897, now seen corresponding path program 37 times [2020-10-14 07:45:07,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:45:07,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74461059] [2020-10-14 07:45:07,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:45:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:07,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:07,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:07,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:09,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:12,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:12,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-14 07:45:12,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:45:12,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 07:45:12,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:12,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:12,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 07:45:12,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:45:12,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 07:45:12,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:12,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:45:12,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:12,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:12,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:12,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:45:12,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:45:12,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:45:12,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:12,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:12,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:12,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:45:12,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:12,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:12,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 07:45:12,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:12,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:12,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:12,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:12,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 07:45:12,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:45:12,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 522 [2020-10-14 07:45:12,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:12,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:12,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:12,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-14 07:45:12,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:12,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:12,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 07:45:13,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:13,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:13,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:13,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:13,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 07:45:13,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:45:13,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 497 [2020-10-14 07:45:13,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:13,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:13,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:13,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-14 07:45:13,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:13,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:13,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-14 07:45:13,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:13,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:13,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:14,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:14,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 07:45:14,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:45:14,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 494 [2020-10-14 07:45:14,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:14,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:14,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:14,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-14 07:45:14,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:14,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:14,033 INFO L134 CoverageAnalysis]: Checked inductivity of 3416 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 3220 trivial. 0 not checked. [2020-10-14 07:45:14,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74461059] [2020-10-14 07:45:14,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:45:14,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 07:45:14,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633033640] [2020-10-14 07:45:14,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 07:45:14,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:45:14,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 07:45:14,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-14 07:45:14,035 INFO L87 Difference]: Start difference. First operand 116 states and 135 transitions. Second operand 18 states. [2020-10-14 07:45:14,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:45:14,223 INFO L93 Difference]: Finished difference Result 200 states and 238 transitions. [2020-10-14 07:45:14,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 07:45:14,224 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 215 [2020-10-14 07:45:14,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:45:14,225 INFO L225 Difference]: With dead ends: 200 [2020-10-14 07:45:14,225 INFO L226 Difference]: Without dead ends: 119 [2020-10-14 07:45:14,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-14 07:45:14,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-14 07:45:14,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118. [2020-10-14 07:45:14,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-14 07:45:14,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 137 transitions. [2020-10-14 07:45:14,232 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 137 transitions. Word has length 215 [2020-10-14 07:45:14,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:45:14,232 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 137 transitions. [2020-10-14 07:45:14,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 07:45:14,232 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 137 transitions. [2020-10-14 07:45:14,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-14 07:45:14,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:45:14,234 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 15, 15, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:45:14,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 07:45:14,235 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:45:14,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:45:14,235 INFO L82 PathProgramCache]: Analyzing trace with hash -602239211, now seen corresponding path program 38 times [2020-10-14 07:45:14,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:45:14,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405845083] [2020-10-14 07:45:14,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:45:14,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:14,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:14,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:14,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:16,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:19,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:19,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-14 07:45:19,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:45:19,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-14 07:45:19,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:19,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:19,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 07:45:19,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-14 07:45:19,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 07:45:19,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:19,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:45:19,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:19,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:19,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:19,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:45:19,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:45:19,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:45:19,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:19,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:19,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:19,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:45:19,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:19,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:19,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 07:45:19,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:19,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:19,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:19,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:19,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 07:45:19,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:45:19,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 547 [2020-10-14 07:45:19,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:19,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:19,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:19,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:45:19,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:19,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:19,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 07:45:19,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:19,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:19,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:20,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:20,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 07:45:20,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:45:20,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 496 [2020-10-14 07:45:20,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:20,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:20,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:20,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:45:20,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:20,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:20,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-14 07:45:20,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:20,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:20,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:20,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:20,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 07:45:20,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:45:20,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 494 [2020-10-14 07:45:20,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:20,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:20,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:20,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-14 07:45:20,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:20,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:20,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3445 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 3345 trivial. 0 not checked. [2020-10-14 07:45:20,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405845083] [2020-10-14 07:45:20,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:45:21,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 07:45:21,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266106670] [2020-10-14 07:45:21,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 07:45:21,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:45:21,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 07:45:21,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 07:45:21,001 INFO L87 Difference]: Start difference. First operand 118 states and 137 transitions. Second operand 14 states. [2020-10-14 07:45:21,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:45:21,126 INFO L93 Difference]: Finished difference Result 177 states and 212 transitions. [2020-10-14 07:45:21,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 07:45:21,127 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 217 [2020-10-14 07:45:21,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:45:21,128 INFO L225 Difference]: With dead ends: 177 [2020-10-14 07:45:21,129 INFO L226 Difference]: Without dead ends: 121 [2020-10-14 07:45:21,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 07:45:21,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-14 07:45:21,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 120. [2020-10-14 07:45:21,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-14 07:45:21,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 139 transitions. [2020-10-14 07:45:21,135 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 139 transitions. Word has length 217 [2020-10-14 07:45:21,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:45:21,136 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 139 transitions. [2020-10-14 07:45:21,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 07:45:21,136 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 139 transitions. [2020-10-14 07:45:21,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-14 07:45:21,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:45:21,137 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 15, 15, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:45:21,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 07:45:21,138 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:45:21,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:45:21,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1437406441, now seen corresponding path program 39 times [2020-10-14 07:45:21,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:45:21,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1230600047] [2020-10-14 07:45:21,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:45:21,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:21,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:21,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:21,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:23,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:26,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:26,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-14 07:45:26,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:45:26,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-14 07:45:26,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:26,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:26,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 07:45:26,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 07:45:26,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 07:45:26,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:26,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:45:26,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:26,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:26,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:26,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:45:26,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:45:26,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:45:26,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:26,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:26,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:26,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:45:26,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:26,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:26,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 07:45:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:26,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:26,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:26,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:26,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 07:45:26,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:45:26,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 538 [2020-10-14 07:45:26,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:26,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:26,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:26,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:45:26,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:26,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:26,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 07:45:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:26,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:27,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:27,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 07:45:27,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:45:27,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-10-14 07:45:27,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:27,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:27,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 07:45:27,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:45:27,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 07:45:27,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:27,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-14 07:45:27,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:27,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:27,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:27,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:45:27,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 07:45:27,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:45:27,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 492 [2020-10-14 07:45:27,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:45:27,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:45:27,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:45:27,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-14 07:45:27,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:45:27,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:45:27,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3466 backedges. 709 proven. 1039 refuted. 0 times theorem prover too weak. 1718 trivial. 0 not checked. [2020-10-14 07:45:27,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1230600047] [2020-10-14 07:45:27,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:45:27,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 07:45:27,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382474158] [2020-10-14 07:45:27,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 07:45:27,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:45:27,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 07:45:27,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-14 07:45:27,865 INFO L87 Difference]: Start difference. First operand 120 states and 139 transitions. Second operand 19 states. [2020-10-14 07:45:28,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:45:28,335 INFO L93 Difference]: Finished difference Result 207 states and 249 transitions. [2020-10-14 07:45:28,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 07:45:28,336 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 219 [2020-10-14 07:45:28,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:45:28,338 INFO L225 Difference]: With dead ends: 207 [2020-10-14 07:45:28,338 INFO L226 Difference]: Without dead ends: 125 [2020-10-14 07:45:28,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 07:45:28,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-14 07:45:28,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2020-10-14 07:45:28,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-14 07:45:28,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 143 transitions. [2020-10-14 07:45:28,345 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 143 transitions. Word has length 219 [2020-10-14 07:45:28,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:45:28,345 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 143 transitions. [2020-10-14 07:45:28,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 07:45:28,345 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 143 transitions. [2020-10-14 07:45:28,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-14 07:45:28,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:45:28,347 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 48, 15, 15, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:45:28,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 07:45:28,347 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:45:28,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:45:28,348 INFO L82 PathProgramCache]: Analyzing trace with hash -233395938, now seen corresponding path program 40 times [2020-10-14 07:45:28,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:45:28,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [742566576] [2020-10-14 07:45:28,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:45:28,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:45:28,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:28,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:45:28,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking...