/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/avg40-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 07:37:27,316 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 07:37:27,319 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 07:37:27,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 07:37:27,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 07:37:27,376 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 07:37:27,378 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 07:37:27,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 07:37:27,385 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 07:37:27,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 07:37:27,389 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 07:37:27,390 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 07:37:27,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 07:37:27,394 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 07:37:27,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 07:37:27,399 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 07:37:27,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 07:37:27,401 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 07:37:27,403 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 07:37:27,412 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 07:37:27,414 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 07:37:27,415 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 07:37:27,416 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 07:37:27,417 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 07:37:27,430 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 07:37:27,431 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 07:37:27,431 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 07:37:27,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 07:37:27,435 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 07:37:27,436 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 07:37:27,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 07:37:27,437 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 07:37:27,438 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 07:37:27,439 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 07:37:27,440 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 07:37:27,440 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 07:37:27,441 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 07:37:27,441 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 07:37:27,441 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 07:37:27,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 07:37:27,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 07:37:27,444 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 07:37:27,466 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 07:37:27,466 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 07:37:27,468 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 07:37:27,468 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 07:37:27,468 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 07:37:27,468 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 07:37:27,469 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 07:37:27,469 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 07:37:27,469 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 07:37:27,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 07:37:27,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 07:37:27,470 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 07:37:27,470 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 07:37:27,470 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 07:37:27,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 07:37:27,470 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 07:37:27,471 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 07:37:27,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 07:37:27,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 07:37:27,471 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 07:37:27,471 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 07:37:27,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 07:37:27,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 07:37:27,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 07:37:27,472 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 07:37:27,472 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 07:37:27,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 07:37:27,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 07:37:27,473 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 07:37:27,473 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 07:37:27,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 07:37:27,821 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 07:37:27,826 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 07:37:27,829 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 07:37:27,831 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 07:37:27,832 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/avg40-2.i [2020-10-14 07:37:27,913 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9338f168b/1d987db12bf14e2a8f3f121c7a7cbe8c/FLAGbffa33d45 [2020-10-14 07:37:28,430 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 07:37:28,431 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/avg40-2.i [2020-10-14 07:37:28,437 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9338f168b/1d987db12bf14e2a8f3f121c7a7cbe8c/FLAGbffa33d45 [2020-10-14 07:37:28,837 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9338f168b/1d987db12bf14e2a8f3f121c7a7cbe8c [2020-10-14 07:37:28,847 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 07:37:28,849 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 07:37:28,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 07:37:28,851 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 07:37:28,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 07:37:28,856 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:37:28" (1/1) ... [2020-10-14 07:37:28,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c3d6b50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:28, skipping insertion in model container [2020-10-14 07:37:28,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:37:28" (1/1) ... [2020-10-14 07:37:28,868 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 07:37:28,888 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 07:37:29,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 07:37:29,086 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 07:37:29,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 07:37:29,126 INFO L208 MainTranslator]: Completed translation [2020-10-14 07:37:29,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:29 WrapperNode [2020-10-14 07:37:29,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 07:37:29,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 07:37:29,128 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 07:37:29,128 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 07:37:29,230 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:29" (1/1) ... [2020-10-14 07:37:29,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:29" (1/1) ... [2020-10-14 07:37:29,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:29" (1/1) ... [2020-10-14 07:37:29,241 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:29" (1/1) ... [2020-10-14 07:37:29,250 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:29" (1/1) ... [2020-10-14 07:37:29,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:29" (1/1) ... [2020-10-14 07:37:29,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:29" (1/1) ... [2020-10-14 07:37:29,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 07:37:29,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 07:37:29,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 07:37:29,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 07:37:29,261 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:29" (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 07:37:29,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 07:37:29,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 07:37:29,330 INFO L138 BoogieDeclarations]: Found implementation of procedure avg [2020-10-14 07:37:29,330 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 07:37:29,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 07:37:29,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 07:37:29,331 INFO L130 BoogieDeclarations]: Found specification of procedure avg [2020-10-14 07:37:29,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 07:37:29,331 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 07:37:29,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 07:37:29,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 07:37:29,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 07:37:29,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 07:37:29,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 07:37:29,616 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 07:37:29,616 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 07:37:29,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:37:29 BoogieIcfgContainer [2020-10-14 07:37:29,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 07:37:29,623 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 07:37:29,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 07:37:29,628 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 07:37:29,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:37:28" (1/3) ... [2020-10-14 07:37:29,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73761a24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:37:29, skipping insertion in model container [2020-10-14 07:37:29,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:29" (2/3) ... [2020-10-14 07:37:29,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73761a24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:37:29, skipping insertion in model container [2020-10-14 07:37:29,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:37:29" (3/3) ... [2020-10-14 07:37:29,636 INFO L109 eAbstractionObserver]: Analyzing ICFG avg40-2.i [2020-10-14 07:37:29,669 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 07:37:29,680 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 07:37:29,705 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 07:37:29,734 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 07:37:29,734 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 07:37:29,734 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 07:37:29,734 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 07:37:29,734 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 07:37:29,734 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 07:37:29,735 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 07:37:29,735 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 07:37:29,753 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-14 07:37:29,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 07:37:29,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:37:29,760 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 07:37:29,761 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:37:29,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:37:29,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1283808693, now seen corresponding path program 1 times [2020-10-14 07:37:29,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:37:29,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370853487] [2020-10-14 07:37:29,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:37:29,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:29,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:29,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:30,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:30,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:30,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:30,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:31,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:31,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 07:37:31,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 07:37:31,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1715 [2020-10-14 07:37:31,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:31,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:31,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:31,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 07:37:31,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:31,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 07:37:31,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:37:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:31,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:31,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:31,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:37:31,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:37:31,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 07:37:31,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:31,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:31,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:31,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:31,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:31,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:31,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:37:31,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:31,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:31,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:31,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:31,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:37:31,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:31,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 07:37:31,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:31,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:31,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:31,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:31,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:31,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 07:37:31,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 07:37:31,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:31,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:31,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:31,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:31,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:37:31,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:31,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 07:37:31,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:31,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:31,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:31,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:31,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:31,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 07:37:31,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:37:31,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:31,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:31,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:31,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:31,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:37:31,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:31,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 07:37:31,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:31,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:31,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:31,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:37:31,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:31,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 07:37:31,857 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 07:37:31,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370853487] [2020-10-14 07:37:31,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:37:31,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 07:37:31,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559997220] [2020-10-14 07:37:31,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 07:37:31,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:37:31,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 07:37:31,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 07:37:31,901 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2020-10-14 07:37:32,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:37:32,065 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2020-10-14 07:37:32,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 07:37:32,068 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-14 07:37:32,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:37:32,078 INFO L225 Difference]: With dead ends: 54 [2020-10-14 07:37:32,078 INFO L226 Difference]: Without dead ends: 26 [2020-10-14 07:37:32,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 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 07:37:32,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-14 07:37:32,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-14 07:37:32,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-14 07:37:32,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-14 07:37:32,166 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 32 [2020-10-14 07:37:32,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:37:32,168 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-14 07:37:32,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 07:37:32,169 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-14 07:37:32,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 07:37:32,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:37:32,175 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 07:37:32,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 07:37:32,176 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:37:32,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:37:32,177 INFO L82 PathProgramCache]: Analyzing trace with hash 721846027, now seen corresponding path program 1 times [2020-10-14 07:37:32,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:37:32,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824039286] [2020-10-14 07:37:32,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:37:32,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:32,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:32,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:32,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:32,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:32,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:32,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:33,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:33,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 07:37:33,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 07:37:33,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1634 [2020-10-14 07:37:33,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:33,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:33,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:37:33,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 07:37:33,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 07:37:33,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:33,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:37:33,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:33,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:33,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:33,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:37:33,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:37:33,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:37:33,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:33,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:33,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:33,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:33,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:33,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:33,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:37:33,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:33,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:33,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:33,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:33,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:37:33,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:33,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 07:37:33,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:33,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:33,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:33,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:33,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:33,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:33,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 07:37:33,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:33,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:33,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:33,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:37:33,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:37:33,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 07:37:33,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:33,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:33,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:37:33,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:37:33,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 07:37:33,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:33,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:37:33,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:33,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:33,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:33,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:33,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 07:37:33,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:33,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 07:37:33,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:33,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:33,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:33,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 07:37:33,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:33,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:33,931 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 07:37:33,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824039286] [2020-10-14 07:37:33,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:37:33,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-14 07:37:33,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918285104] [2020-10-14 07:37:33,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:37:33,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:37:33,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:37:33,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:37:33,936 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 4 states. [2020-10-14 07:37:34,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:37:34,028 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2020-10-14 07:37:34,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:37:34,028 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-14 07:37:34,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:37:34,029 INFO L225 Difference]: With dead ends: 45 [2020-10-14 07:37:34,030 INFO L226 Difference]: Without dead ends: 28 [2020-10-14 07:37:34,031 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 07:37:34,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-14 07:37:34,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-14 07:37:34,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-14 07:37:34,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-14 07:37:34,039 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 32 [2020-10-14 07:37:34,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:37:34,040 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-14 07:37:34,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:37:34,040 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-14 07:37:34,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 07:37:34,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:37:34,042 INFO L422 BasicCegarLoop]: trace histogram [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 07:37:34,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 07:37:34,042 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:37:34,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:37:34,043 INFO L82 PathProgramCache]: Analyzing trace with hash 540504713, now seen corresponding path program 1 times [2020-10-14 07:37:34,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:37:34,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189285708] [2020-10-14 07:37:34,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:37:34,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:34,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:34,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:34,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:34,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:34,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:37,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:37,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 07:37:37,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:37:37,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3405 [2020-10-14 07:37:37,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:37,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:37,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:37:37,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:37:37,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 07:37:37,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:37,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:37:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:37,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:37,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:37,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:37:37,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:37:37,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:37:37,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:37,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:37,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:37,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:37,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:37,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:37,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 07:37:37,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:37,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:37,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:37,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:37,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 07:37:37,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:37,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 07:37:37,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:37,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:37,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:37,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 07:37:37,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:37,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:37,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 07:37:37,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:37,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:37,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:37,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:37,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 07:37:37,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:37,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 07:37:37,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:37,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:37,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:37,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 07:37:37,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:37,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:37,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 07:37:37,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:37,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:37,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:37,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:37,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 07:37:37,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:37,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 07:37:37,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:37,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:37,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:37,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 07:37:37,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:37,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:37,596 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-14 07:37:37,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189285708] [2020-10-14 07:37:37,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:37:37,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 07:37:37,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474416400] [2020-10-14 07:37:37,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:37:37,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:37:37,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:37:37,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:37:37,599 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 4 states. [2020-10-14 07:37:37,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:37:37,672 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2020-10-14 07:37:37,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:37:37,672 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-14 07:37:37,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:37:37,673 INFO L225 Difference]: With dead ends: 48 [2020-10-14 07:37:37,674 INFO L226 Difference]: Without dead ends: 29 [2020-10-14 07:37:37,674 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 07:37:37,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-14 07:37:37,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-10-14 07:37:37,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-14 07:37:37,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-14 07:37:37,681 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 38 [2020-10-14 07:37:37,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:37:37,682 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-14 07:37:37,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:37:37,682 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-14 07:37:37,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 07:37:37,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:37:37,684 INFO L422 BasicCegarLoop]: trace histogram [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 07:37:37,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 07:37:37,684 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:37:37,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:37:37,685 INFO L82 PathProgramCache]: Analyzing trace with hash 2063023467, now seen corresponding path program 1 times [2020-10-14 07:37:37,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:37:37,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498382169] [2020-10-14 07:37:37,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:37:37,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:37,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:37,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:37,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:37,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:38,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:42,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:42,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 07:37:42,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:37:42,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 07:37:42,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:42,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:42,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 07:37:42,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 07:37:42,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 07:37:42,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:42,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:37:42,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:42,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:42,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:42,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:37:42,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:37:42,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:37:42,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:42,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:42,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:42,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:42,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:42,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 07:37:42,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:37:42,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:42,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:42,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:42,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:42,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 07:37:42,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:42,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 07:37:42,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:42,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:42,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:42,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:42,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:42,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:42,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 07:37:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:42,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:42,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:42,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:42,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 07:37:42,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:42,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 07:37:42,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:42,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:42,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:42,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:42,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:42,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:42,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 07:37:42,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:42,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:42,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:42,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:42,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 07:37:42,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:42,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 07:37:42,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:42,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:42,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:42,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 07:37:42,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:42,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:42,835 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-14 07:37:42,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498382169] [2020-10-14 07:37:42,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:37:42,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 07:37:42,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180307860] [2020-10-14 07:37:42,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 07:37:42,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:37:42,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 07:37:42,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 07:37:42,841 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2020-10-14 07:37:42,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:37:42,938 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2020-10-14 07:37:42,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 07:37:42,939 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-10-14 07:37:42,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:37:42,940 INFO L225 Difference]: With dead ends: 43 [2020-10-14 07:37:42,941 INFO L226 Difference]: Without dead ends: 30 [2020-10-14 07:37:42,941 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 07:37:42,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-14 07:37:42,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-14 07:37:42,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 07:37:42,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-14 07:37:42,952 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 40 [2020-10-14 07:37:42,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:37:42,955 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-14 07:37:42,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 07:37:42,955 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-14 07:37:42,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 07:37:42,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:37:42,958 INFO L422 BasicCegarLoop]: trace histogram [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 07:37:42,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 07:37:42,959 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:37:42,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:37:42,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1550668567, now seen corresponding path program 1 times [2020-10-14 07:37:42,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:37:42,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1478812184] [2020-10-14 07:37:42,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:37:42,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:42,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:42,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:42,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:43,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:43,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:47,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:47,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 07:37:47,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:37:47,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 07:37:47,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:47,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:47,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:37:47,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 07:37:47,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 07:37:47,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:48,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:37:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:48,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:48,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:48,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:37:48,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:37:48,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 07:37:48,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:48,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:48,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:48,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:48,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:48,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:48,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:37:48,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:48,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:48,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:48,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:48,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 07:37:48,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:48,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 07:37:48,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:48,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:48,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:48,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:48,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:48,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:48,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 07:37:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:48,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:48,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:48,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 07:37:48,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:37:48,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 07:37:48,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:48,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:48,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:37:48,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:37:48,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 07:37:48,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:37:48,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 07:37:48,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:48,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:48,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:48,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:48,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 07:37:48,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:48,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 07:37:48,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:48,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:48,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:48,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 07:37:48,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:48,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:48,118 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-14 07:37:48,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1478812184] [2020-10-14 07:37:48,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:37:48,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 07:37:48,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720670258] [2020-10-14 07:37:48,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 07:37:48,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:37:48,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 07:37:48,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:37:48,121 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-10-14 07:37:48,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:37:48,240 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2020-10-14 07:37:48,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 07:37:48,241 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-10-14 07:37:48,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:37:48,242 INFO L225 Difference]: With dead ends: 51 [2020-10-14 07:37:48,242 INFO L226 Difference]: Without dead ends: 32 [2020-10-14 07:37:48,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 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 07:37:48,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-14 07:37:48,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-14 07:37:48,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-14 07:37:48,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-14 07:37:48,249 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 42 [2020-10-14 07:37:48,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:37:48,250 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-14 07:37:48,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 07:37:48,250 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-14 07:37:48,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 07:37:48,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:37:48,251 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:37:48,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 07:37:48,252 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:37:48,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:37:48,252 INFO L82 PathProgramCache]: Analyzing trace with hash 428974311, now seen corresponding path program 2 times [2020-10-14 07:37:48,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:37:48,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491194002] [2020-10-14 07:37:48,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:37:48,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:48,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:48,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:48,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:48,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:49,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:53,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:53,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 07:37:53,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:37:53,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 07:37:53,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:53,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:53,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:37:53,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 07:37:53,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:37:53,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:53,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:37:53,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:53,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:53,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:53,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:37:53,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:37:53,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:37:53,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:53,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:53,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:53,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:53,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:53,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:53,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:37:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:53,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:53,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:53,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:53,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 07:37:53,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:53,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 07:37:53,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:53,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:53,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:53,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:53,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:53,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:53,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 07:37:53,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:53,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:53,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:53,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 07:37:53,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:37:53,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 07:37:53,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:53,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:53,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:37:53,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:37:53,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:37:53,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:53,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 07:37:53,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:53,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:53,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:53,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:53,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 07:37:53,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:53,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 07:37:53,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:53,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:53,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:53,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:37:53,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:53,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:53,416 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-14 07:37:53,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491194002] [2020-10-14 07:37:53,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:37:53,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 07:37:53,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523007910] [2020-10-14 07:37:53,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 07:37:53,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:37:53,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 07:37:53,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:37:53,421 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 6 states. [2020-10-14 07:37:53,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:37:53,555 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2020-10-14 07:37:53,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 07:37:53,556 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2020-10-14 07:37:53,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:37:53,557 INFO L225 Difference]: With dead ends: 55 [2020-10-14 07:37:53,557 INFO L226 Difference]: Without dead ends: 34 [2020-10-14 07:37:53,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 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 07:37:53,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-14 07:37:53,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-14 07:37:53,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-14 07:37:53,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-14 07:37:53,564 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 48 [2020-10-14 07:37:53,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:37:53,565 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-14 07:37:53,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 07:37:53,565 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-14 07:37:53,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 07:37:53,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:37:53,566 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:37:53,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 07:37:53,567 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:37:53,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:37:53,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1810554469, now seen corresponding path program 3 times [2020-10-14 07:37:53,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:37:53,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673575869] [2020-10-14 07:37:53,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:37:53,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:53,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:53,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:53,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:53,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:54,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:58,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:58,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 07:37:58,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:37:58,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 07:37:58,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:58,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:58,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:37:58,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:37:58,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 07:37:58,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:58,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:37:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:58,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:58,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:58,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:37:58,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:37:58,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:37:58,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:58,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:58,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:58,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:37:58,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:58,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:58,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 07:37:58,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:58,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:58,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:58,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:58,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:37:58,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:58,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 07:37:58,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:58,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:58,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:58,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 07:37:58,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:58,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:58,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 07:37:58,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:58,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:58,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:58,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:58,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:37:58,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:58,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 07:37:58,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:58,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:58,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:58,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 07:37:58,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:58,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:58,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 07:37:58,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:58,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:58,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:58,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:37:58,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:37:58,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:37:58,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 07:37:58,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:37:58,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:37:58,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:37:58,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 07:37:58,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:37:58,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:37:58,802 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-14 07:37:58,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673575869] [2020-10-14 07:37:58,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:37:58,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 07:37:58,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148497582] [2020-10-14 07:37:58,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 07:37:58,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:37:58,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 07:37:58,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:37:58,810 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2020-10-14 07:37:58,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:37:58,922 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2020-10-14 07:37:58,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 07:37:58,923 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-10-14 07:37:58,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:37:58,924 INFO L225 Difference]: With dead ends: 60 [2020-10-14 07:37:58,925 INFO L226 Difference]: Without dead ends: 36 [2020-10-14 07:37:58,926 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 07:37:58,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-14 07:37:58,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-14 07:37:58,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-14 07:37:58,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-14 07:37:58,933 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 54 [2020-10-14 07:37:58,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:37:58,934 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-14 07:37:58,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 07:37:58,934 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-14 07:37:58,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 07:37:58,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:37:58,936 INFO L422 BasicCegarLoop]: trace histogram [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 07:37:58,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 07:37:58,936 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:37:58,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:37:58,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1479760569, now seen corresponding path program 4 times [2020-10-14 07:37:58,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:37:58,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415446181] [2020-10-14 07:37:58,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:37:58,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:37:58,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:58,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:58,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:37:58,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:00,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:03,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:03,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 07:38:03,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:38:03,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 07:38:03,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:03,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:03,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:38:03,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:38:03,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:38:03,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:03,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:03,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:03,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:03,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:03,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:03,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:03,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:38:03,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:03,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:03,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:03,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:03,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:03,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:03,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 07:38:03,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:03,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:04,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:04,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:04,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:38:04,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:04,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 07:38:04,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:04,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:04,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:04,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 07:38:04,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:04,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:04,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 07:38:04,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:04,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:04,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:04,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:04,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:38:04,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:04,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 07:38:04,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:04,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:04,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:04,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 07:38:04,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:04,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:04,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 07:38:04,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:04,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:04,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:04,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:04,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:38:04,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:04,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 07:38:04,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:04,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:04,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:04,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 07:38:04,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:04,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:04,109 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-14 07:38:04,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [415446181] [2020-10-14 07:38:04,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:04,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 07:38:04,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763249724] [2020-10-14 07:38:04,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 07:38:04,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:04,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 07:38:04,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:38:04,112 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-10-14 07:38:04,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:04,194 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2020-10-14 07:38:04,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 07:38:04,195 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-10-14 07:38:04,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:04,195 INFO L225 Difference]: With dead ends: 62 [2020-10-14 07:38:04,196 INFO L226 Difference]: Without dead ends: 38 [2020-10-14 07:38:04,196 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 07:38:04,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-14 07:38:04,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-14 07:38:04,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-14 07:38:04,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-14 07:38:04,202 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 56 [2020-10-14 07:38:04,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:04,202 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-14 07:38:04,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 07:38:04,203 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-14 07:38:04,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 07:38:04,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:04,204 INFO L422 BasicCegarLoop]: trace histogram [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 07:38:04,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 07:38:04,204 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:04,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:04,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1918385065, now seen corresponding path program 5 times [2020-10-14 07:38:04,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:04,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825571387] [2020-10-14 07:38:04,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:04,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:04,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:04,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:04,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:04,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:08,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:09,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:09,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 07:38:09,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 07:38:09,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 07:38:09,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:09,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:09,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:38:09,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 07:38:09,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 07:38:09,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:09,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:09,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:09,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:09,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:09,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:09,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:09,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:38:09,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:09,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:09,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:09,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:09,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:09,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:09,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 07:38:09,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:09,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:09,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:09,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:09,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:38:09,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:09,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 07:38:09,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:09,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:09,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:09,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:09,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:09,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:09,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 07:38:09,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:09,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:09,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:09,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:09,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:38:09,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:09,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 07:38:09,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:09,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:09,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:09,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:09,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:09,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:09,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 07:38:09,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:09,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:09,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:09,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:09,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:38:09,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:09,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 07:38:09,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:09,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:09,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:09,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 07:38:09,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:09,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:09,460 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-14 07:38:09,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825571387] [2020-10-14 07:38:09,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:09,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 07:38:09,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055698183] [2020-10-14 07:38:09,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 07:38:09,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:09,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 07:38:09,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:38:09,471 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 5 states. [2020-10-14 07:38:09,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:09,574 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2020-10-14 07:38:09,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 07:38:09,575 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-10-14 07:38:09,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:09,576 INFO L225 Difference]: With dead ends: 57 [2020-10-14 07:38:09,576 INFO L226 Difference]: Without dead ends: 40 [2020-10-14 07:38:09,580 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 07:38:09,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-14 07:38:09,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-14 07:38:09,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-14 07:38:09,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-14 07:38:09,590 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 58 [2020-10-14 07:38:09,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:09,590 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-14 07:38:09,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 07:38:09,591 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-14 07:38:09,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 07:38:09,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:09,594 INFO L422 BasicCegarLoop]: trace histogram [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 07:38:09,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 07:38:09,595 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:09,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:09,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1137374119, now seen corresponding path program 6 times [2020-10-14 07:38:09,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:09,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238732366] [2020-10-14 07:38:09,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:09,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:09,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:09,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:09,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:09,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:14,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:14,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 07:38:14,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:38:14,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 07:38:14,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:14,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:14,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:38:14,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 07:38:14,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 07:38:14,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:14,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:14,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:14,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:14,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:14,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:14,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:14,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:38:14,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:14,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:14,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:14,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:14,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:14,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 07:38:14,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 07:38:14,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:14,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:14,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:14,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:38:14,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:14,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 07:38:14,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:14,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:14,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:38:14,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:38:14,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 07:38:14,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:14,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 07:38:14,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:14,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:14,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:14,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:14,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:38:14,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:14,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 07:38:14,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:14,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:14,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:14,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 07:38:14,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:14,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:14,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 07:38:14,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:14,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:14,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:14,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:14,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 07:38:14,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:14,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 07:38:14,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:14,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:14,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:14,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 07:38:14,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:14,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:14,776 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-10-14 07:38:14,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238732366] [2020-10-14 07:38:14,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:14,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 07:38:14,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289494217] [2020-10-14 07:38:14,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 07:38:14,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:14,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 07:38:14,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:38:14,779 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 7 states. [2020-10-14 07:38:14,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:14,917 INFO L93 Difference]: Finished difference Result 67 states and 77 transitions. [2020-10-14 07:38:14,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 07:38:14,918 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2020-10-14 07:38:14,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:14,919 INFO L225 Difference]: With dead ends: 67 [2020-10-14 07:38:14,919 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 07:38:14,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 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 07:38:14,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 07:38:14,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-14 07:38:14,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 07:38:14,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-14 07:38:14,924 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 60 [2020-10-14 07:38:14,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:14,925 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-14 07:38:14,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 07:38:14,925 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-14 07:38:14,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 07:38:14,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:14,926 INFO L422 BasicCegarLoop]: trace histogram [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 07:38:14,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 07:38:14,926 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:14,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:14,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1983725531, now seen corresponding path program 7 times [2020-10-14 07:38:14,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:14,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [29843075] [2020-10-14 07:38:14,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:14,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:14,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:14,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:14,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:19,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:19,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 07:38:19,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:38:19,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 07:38:19,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:19,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:19,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:38:19,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:38:19,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 07:38:19,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:19,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:19,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:19,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:19,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:19,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:19,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:38:19,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:19,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:19,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:19,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:19,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:19,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:19,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 07:38:19,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:19,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:19,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:20,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:20,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:38:20,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:20,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 07:38:20,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:20,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:20,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:20,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 07:38:20,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:20,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:20,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 07:38:20,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:20,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:20,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:20,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:20,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:38:20,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:20,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 07:38:20,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:20,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:20,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:20,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 07:38:20,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:20,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:20,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 07:38:20,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:20,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:20,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:20,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:20,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:38:20,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:20,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 07:38:20,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:20,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:20,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:20,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 07:38:20,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:20,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:20,112 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-10-14 07:38:20,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [29843075] [2020-10-14 07:38:20,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:20,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 07:38:20,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187313355] [2020-10-14 07:38:20,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 07:38:20,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:20,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 07:38:20,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:38:20,114 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 7 states. [2020-10-14 07:38:20,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:20,194 INFO L93 Difference]: Finished difference Result 72 states and 80 transitions. [2020-10-14 07:38:20,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 07:38:20,195 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 66 [2020-10-14 07:38:20,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:20,196 INFO L225 Difference]: With dead ends: 72 [2020-10-14 07:38:20,196 INFO L226 Difference]: Without dead ends: 44 [2020-10-14 07:38:20,197 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 07:38:20,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-14 07:38:20,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-14 07:38:20,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-14 07:38:20,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-14 07:38:20,202 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 66 [2020-10-14 07:38:20,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:20,202 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-14 07:38:20,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 07:38:20,202 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-14 07:38:20,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 07:38:20,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:20,203 INFO L422 BasicCegarLoop]: trace histogram [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 07:38:20,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 07:38:20,204 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:20,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:20,204 INFO L82 PathProgramCache]: Analyzing trace with hash -489208825, now seen corresponding path program 8 times [2020-10-14 07:38:20,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:20,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797621925] [2020-10-14 07:38:20,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:20,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:20,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:20,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:20,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:20,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:25,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:25,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 07:38:25,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:38:25,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 07:38:25,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:25,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:25,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:38:25,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-14 07:38:25,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 07:38:25,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:25,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:25,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:25,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:25,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:25,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:25,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:25,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:38:25,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:25,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:25,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:25,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:25,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:25,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:25,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 07:38:25,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:25,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:25,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:25,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:25,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:38:25,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:25,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 07:38:25,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:25,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:25,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:25,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:25,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:25,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:25,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 07:38:25,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:25,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:25,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:25,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:25,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:38:25,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:25,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 07:38:25,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:25,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:25,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:25,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:25,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:25,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:25,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 07:38:25,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:25,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:25,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:25,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:25,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:38:25,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:25,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 07:38:25,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:25,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:25,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:25,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 07:38:25,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:25,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:25,358 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2020-10-14 07:38:25,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797621925] [2020-10-14 07:38:25,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:25,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 07:38:25,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153379020] [2020-10-14 07:38:25,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 07:38:25,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:25,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 07:38:25,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 07:38:25,360 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 6 states. [2020-10-14 07:38:25,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:25,444 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2020-10-14 07:38:25,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 07:38:25,445 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-14 07:38:25,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:25,445 INFO L225 Difference]: With dead ends: 65 [2020-10-14 07:38:25,446 INFO L226 Difference]: Without dead ends: 46 [2020-10-14 07:38:25,447 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 07:38:25,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-14 07:38:25,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-14 07:38:25,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-14 07:38:25,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-14 07:38:25,457 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 68 [2020-10-14 07:38:25,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:25,457 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-14 07:38:25,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 07:38:25,457 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-14 07:38:25,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 07:38:25,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:25,458 INFO L422 BasicCegarLoop]: trace histogram [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 07:38:25,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 07:38:25,458 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:25,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:25,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1862159493, now seen corresponding path program 9 times [2020-10-14 07:38:25,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:25,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600411556] [2020-10-14 07:38:25,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:25,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:25,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:25,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:25,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:30,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:30,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 07:38:30,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:38:30,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 07:38:30,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:30,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:30,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:38:30,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 07:38:30,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 07:38:30,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:30,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:30,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:30,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:30,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:30,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:30,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:30,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:38:30,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:30,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:30,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:30,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:30,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:30,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:30,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 07:38:30,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:30,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:30,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:30,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:30,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:38:30,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:30,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 07:38:30,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:30,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:30,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:30,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:30,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:30,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:30,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 07:38:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:30,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:30,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:30,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:38:30,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:30,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 07:38:30,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:30,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:30,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:38:30,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:38:30,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 07:38:30,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:30,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 07:38:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:30,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:30,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:30,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:30,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:38:30,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:30,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 07:38:30,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:30,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:30,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:30,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 07:38:30,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:30,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:30,640 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 44 proven. 60 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2020-10-14 07:38:30,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600411556] [2020-10-14 07:38:30,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:30,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 07:38:30,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720444309] [2020-10-14 07:38:30,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 07:38:30,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:30,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 07:38:30,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 07:38:30,643 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 8 states. [2020-10-14 07:38:30,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:30,786 INFO L93 Difference]: Finished difference Result 77 states and 87 transitions. [2020-10-14 07:38:30,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 07:38:30,786 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-14 07:38:30,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:30,788 INFO L225 Difference]: With dead ends: 77 [2020-10-14 07:38:30,788 INFO L226 Difference]: Without dead ends: 48 [2020-10-14 07:38:30,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-14 07:38:30,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-14 07:38:30,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-14 07:38:30,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-14 07:38:30,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-14 07:38:30,794 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 70 [2020-10-14 07:38:30,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:30,794 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-14 07:38:30,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 07:38:30,795 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-14 07:38:30,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-14 07:38:30,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:30,795 INFO L422 BasicCegarLoop]: trace histogram [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 07:38:30,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 07:38:30,796 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:30,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:30,796 INFO L82 PathProgramCache]: Analyzing trace with hash -282142333, now seen corresponding path program 10 times [2020-10-14 07:38:30,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:30,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081357881] [2020-10-14 07:38:30,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:30,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:30,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:30,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:30,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:30,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:35,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:35,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 07:38:35,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:38:35,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 07:38:35,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:35,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:35,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 07:38:35,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 07:38:35,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 07:38:35,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:35,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:35,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:35,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:35,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:35,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:35,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:38:35,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:35,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:35,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:35,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:35,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:35,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:35,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 07:38:35,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:35,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:35,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:35,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:35,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 07:38:35,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:35,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 07:38:35,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:35,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:35,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:35,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:35,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:35,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:35,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 07:38:35,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:35,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:35,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:35,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 07:38:35,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:35,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 07:38:35,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:35,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:35,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 07:38:35,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:38:35,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 07:38:35,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:35,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 07:38:35,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:35,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:35,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:35,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:35,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 07:38:35,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:35,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 07:38:35,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:35,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:35,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:35,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 07:38:35,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:35,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:35,995 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 64 proven. 89 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2020-10-14 07:38:35,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081357881] [2020-10-14 07:38:35,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:35,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 07:38:35,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592271083] [2020-10-14 07:38:35,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 07:38:35,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:35,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 07:38:35,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:38:35,997 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 9 states. [2020-10-14 07:38:36,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:36,176 INFO L93 Difference]: Finished difference Result 81 states and 91 transitions. [2020-10-14 07:38:36,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 07:38:36,178 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 76 [2020-10-14 07:38:36,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:36,180 INFO L225 Difference]: With dead ends: 81 [2020-10-14 07:38:36,180 INFO L226 Difference]: Without dead ends: 50 [2020-10-14 07:38:36,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 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 07:38:36,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-14 07:38:36,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-14 07:38:36,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 07:38:36,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-14 07:38:36,186 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 76 [2020-10-14 07:38:36,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:36,187 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-14 07:38:36,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 07:38:36,187 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-14 07:38:36,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-14 07:38:36,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:36,188 INFO L422 BasicCegarLoop]: trace histogram [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 07:38:36,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 07:38:36,188 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:36,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:36,189 INFO L82 PathProgramCache]: Analyzing trace with hash 403271681, now seen corresponding path program 11 times [2020-10-14 07:38:36,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:36,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1113752832] [2020-10-14 07:38:36,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:36,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:36,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:36,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:36,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:41,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:41,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 07:38:41,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:38:41,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 07:38:41,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:41,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:41,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:38:41,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:38:41,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 07:38:41,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:41,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:41,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:41,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:41,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:41,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:41,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:41,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:38:41,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:41,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:41,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:41,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:41,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:41,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:41,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 07:38:41,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:41,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:41,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:41,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:41,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:41,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:41,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 07:38:41,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:41,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:41,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:41,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:38:41,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:41,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:41,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 07:38:41,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:41,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:41,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:41,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:41,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:41,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:41,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 07:38:41,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:41,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:41,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:41,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:38:41,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:41,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:41,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 07:38:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:41,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:41,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:41,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:41,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:41,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:41,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 07:38:41,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:41,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:41,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:41,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:38:41,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:41,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:41,364 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2020-10-14 07:38:41,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1113752832] [2020-10-14 07:38:41,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:41,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 07:38:41,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592679680] [2020-10-14 07:38:41,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 07:38:41,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:41,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 07:38:41,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 07:38:41,367 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 8 states. [2020-10-14 07:38:41,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:41,462 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2020-10-14 07:38:41,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 07:38:41,463 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 82 [2020-10-14 07:38:41,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:41,464 INFO L225 Difference]: With dead ends: 86 [2020-10-14 07:38:41,464 INFO L226 Difference]: Without dead ends: 52 [2020-10-14 07:38:41,465 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 07:38:41,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-14 07:38:41,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-14 07:38:41,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-14 07:38:41,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-14 07:38:41,470 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 82 [2020-10-14 07:38:41,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:41,471 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-14 07:38:41,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 07:38:41,471 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-14 07:38:41,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-14 07:38:41,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:41,472 INFO L422 BasicCegarLoop]: trace histogram [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 07:38:41,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 07:38:41,472 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:41,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:41,473 INFO L82 PathProgramCache]: Analyzing trace with hash -340922397, now seen corresponding path program 12 times [2020-10-14 07:38:41,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:41,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379104642] [2020-10-14 07:38:41,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:41,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:41,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:41,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:41,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:46,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:46,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 07:38:46,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:38:46,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 07:38:46,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:46,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:46,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 07:38:46,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:38:46,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 07:38:46,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:46,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:46,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:46,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:46,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:46,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:46,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:46,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:38:46,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:46,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:46,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:46,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:46,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:46,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:46,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 07:38:46,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:46,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:46,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:46,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:46,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:46,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:46,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 07:38:46,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:46,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:46,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:46,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:38:46,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:46,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:46,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 07:38:46,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:46,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:46,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:46,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:46,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:46,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:46,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 07:38:46,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:46,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:46,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:46,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:38:46,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:46,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:46,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 07:38:46,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:46,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:46,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:46,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:46,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:46,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:46,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 07:38:46,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:46,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:46,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:46,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:38:46,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:46,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:46,676 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2020-10-14 07:38:46,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379104642] [2020-10-14 07:38:46,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:46,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 07:38:46,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136585737] [2020-10-14 07:38:46,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 07:38:46,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:46,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 07:38:46,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:38:46,679 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 9 states. [2020-10-14 07:38:46,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:46,807 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2020-10-14 07:38:46,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 07:38:46,808 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-10-14 07:38:46,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:46,809 INFO L225 Difference]: With dead ends: 88 [2020-10-14 07:38:46,809 INFO L226 Difference]: Without dead ends: 54 [2020-10-14 07:38:46,809 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 07:38:46,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-14 07:38:46,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-14 07:38:46,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-14 07:38:46,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-14 07:38:46,819 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 84 [2020-10-14 07:38:46,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:46,819 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-14 07:38:46,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 07:38:46,819 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-14 07:38:46,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-14 07:38:46,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:46,820 INFO L422 BasicCegarLoop]: trace histogram [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 07:38:46,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 07:38:46,821 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:46,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:46,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1748107077, now seen corresponding path program 13 times [2020-10-14 07:38:46,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:46,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2018538142] [2020-10-14 07:38:46,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:46,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:46,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:46,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:46,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:46,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:51,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:51,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 07:38:51,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:38:51,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 07:38:51,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:51,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:51,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 07:38:51,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-14 07:38:51,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 07:38:51,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:51,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:51,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:51,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:51,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:51,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:51,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:51,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:38:51,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:51,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:51,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:51,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:51,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:51,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:51,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 07:38:51,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:51,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:51,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:51,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:51,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:51,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:51,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 07:38:51,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:51,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:51,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:51,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:51,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:51,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:51,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 07:38:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:51,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:51,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:51,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:51,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:51,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:51,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 07:38:51,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:51,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:51,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:51,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:51,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:51,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:52,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 07:38:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:52,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:52,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:52,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:52,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:52,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:52,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 07:38:52,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:52,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:52,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:52,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:38:52,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:52,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:52,093 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2020-10-14 07:38:52,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2018538142] [2020-10-14 07:38:52,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:52,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 07:38:52,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817041653] [2020-10-14 07:38:52,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 07:38:52,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:52,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 07:38:52,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 07:38:52,098 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 7 states. [2020-10-14 07:38:52,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:52,197 INFO L93 Difference]: Finished difference Result 79 states and 84 transitions. [2020-10-14 07:38:52,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 07:38:52,198 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 86 [2020-10-14 07:38:52,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:52,201 INFO L225 Difference]: With dead ends: 79 [2020-10-14 07:38:52,202 INFO L226 Difference]: Without dead ends: 56 [2020-10-14 07:38:52,202 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 07:38:52,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-14 07:38:52,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-14 07:38:52,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-14 07:38:52,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-14 07:38:52,215 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 86 [2020-10-14 07:38:52,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:52,216 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-14 07:38:52,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 07:38:52,216 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-14 07:38:52,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 07:38:52,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:52,217 INFO L422 BasicCegarLoop]: trace histogram [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 07:38:52,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 07:38:52,217 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:52,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:52,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1875710019, now seen corresponding path program 14 times [2020-10-14 07:38:52,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:52,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156736800] [2020-10-14 07:38:52,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:52,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:52,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:52,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:52,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:52,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:57,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:57,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 07:38:57,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:38:57,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 07:38:57,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:57,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:57,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 07:38:57,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 07:38:57,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 07:38:57,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:57,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:38:57,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:57,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:57,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:57,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:38:57,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:57,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:38:57,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:57,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:57,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:57,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:57,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:57,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:57,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 07:38:57,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:57,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:57,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:57,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:57,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:57,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:57,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 07:38:57,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:57,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:57,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:57,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:38:57,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:57,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:38:57,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 07:38:57,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:57,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:57,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:57,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:57,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:38:57,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 07:38:57,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:57,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:57,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 07:38:57,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:38:57,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 07:38:57,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:57,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 07:38:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:57,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:57,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:57,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:38:57,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 07:38:57,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:38:57,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 07:38:57,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:38:57,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:38:57,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:38:57,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 07:38:57,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:38:57,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:38:57,427 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 88 proven. 124 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2020-10-14 07:38:57,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1156736800] [2020-10-14 07:38:57,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:38:57,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 07:38:57,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391796931] [2020-10-14 07:38:57,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 07:38:57,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:38:57,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 07:38:57,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 07:38:57,429 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 10 states. [2020-10-14 07:38:57,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:38:57,636 INFO L93 Difference]: Finished difference Result 93 states and 103 transitions. [2020-10-14 07:38:57,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 07:38:57,636 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-10-14 07:38:57,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:38:57,637 INFO L225 Difference]: With dead ends: 93 [2020-10-14 07:38:57,637 INFO L226 Difference]: Without dead ends: 58 [2020-10-14 07:38:57,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 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 07:38:57,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-14 07:38:57,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-14 07:38:57,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-14 07:38:57,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-14 07:38:57,643 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 88 [2020-10-14 07:38:57,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:38:57,644 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-14 07:38:57,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 07:38:57,644 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-14 07:38:57,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-14 07:38:57,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:38:57,645 INFO L422 BasicCegarLoop]: trace histogram [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 07:38:57,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 07:38:57,646 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:38:57,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:38:57,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1216492993, now seen corresponding path program 15 times [2020-10-14 07:38:57,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:38:57,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762844657] [2020-10-14 07:38:57,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:38:57,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:38:57,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:57,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:57,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:38:57,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:02,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:02,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 07:39:02,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:39:02,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 07:39:02,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:02,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:02,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 07:39:02,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:39:02,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 07:39:02,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:02,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:39:02,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:02,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:02,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:02,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:39:02,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:02,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:39:02,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:02,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:02,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:02,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:02,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:02,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:02,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 07:39:02,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:02,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:02,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:02,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:02,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:39:02,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:02,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 07:39:02,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:02,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:02,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:02,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 07:39:02,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:02,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:02,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 07:39:02,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:02,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:02,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:02,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:02,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:39:02,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:02,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 07:39:02,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:02,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:02,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:02,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 07:39:02,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:02,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:02,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 07:39:02,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:02,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:02,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:02,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:02,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:39:02,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:02,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 07:39:02,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:02,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:02,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:02,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 07:39:02,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:02,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:02,882 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked. [2020-10-14 07:39:02,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762844657] [2020-10-14 07:39:02,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:39:02,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 07:39:02,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618664483] [2020-10-14 07:39:02,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 07:39:02,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:39:02,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 07:39:02,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 07:39:02,884 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 10 states. [2020-10-14 07:39:02,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:39:02,983 INFO L93 Difference]: Finished difference Result 98 states and 106 transitions. [2020-10-14 07:39:02,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 07:39:02,985 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-10-14 07:39:02,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:39:02,985 INFO L225 Difference]: With dead ends: 98 [2020-10-14 07:39:02,985 INFO L226 Difference]: Without dead ends: 60 [2020-10-14 07:39:02,986 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 07:39:02,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-14 07:39:02,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-14 07:39:02,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 07:39:02,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-14 07:39:03,000 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 94 [2020-10-14 07:39:03,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:39:03,000 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-14 07:39:03,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 07:39:03,000 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-14 07:39:03,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 07:39:03,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:39:03,004 INFO L422 BasicCegarLoop]: trace histogram [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 07:39:03,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 07:39:03,005 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:39:03,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:39:03,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1443623587, now seen corresponding path program 16 times [2020-10-14 07:39:03,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:39:03,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58625756] [2020-10-14 07:39:03,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:39:03,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:03,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:03,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:03,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:03,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:08,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:08,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 07:39:08,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:39:08,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 07:39:08,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:08,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:08,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 07:39:08,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-14 07:39:08,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 07:39:08,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:08,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:39:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:08,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:08,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:08,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:39:08,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:08,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:39:08,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:08,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:08,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:08,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:08,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:08,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:08,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 07:39:08,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:08,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:08,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:08,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:08,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:39:08,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:08,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 07:39:08,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:08,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:08,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:08,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:08,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:08,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:08,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 07:39:08,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:08,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:08,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:08,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:08,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:39:08,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:08,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 07:39:08,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:08,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:08,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:08,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:08,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:08,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:08,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-14 07:39:08,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:08,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:08,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:08,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:08,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:39:08,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:08,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 07:39:08,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:08,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:08,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:08,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 07:39:08,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:08,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:08,222 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 547 trivial. 0 not checked. [2020-10-14 07:39:08,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58625756] [2020-10-14 07:39:08,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:39:08,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 07:39:08,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703242137] [2020-10-14 07:39:08,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 07:39:08,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:39:08,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 07:39:08,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 07:39:08,224 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 8 states. [2020-10-14 07:39:08,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:39:08,317 INFO L93 Difference]: Finished difference Result 87 states and 92 transitions. [2020-10-14 07:39:08,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 07:39:08,318 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 96 [2020-10-14 07:39:08,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:39:08,319 INFO L225 Difference]: With dead ends: 87 [2020-10-14 07:39:08,319 INFO L226 Difference]: Without dead ends: 62 [2020-10-14 07:39:08,320 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 07:39:08,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-14 07:39:08,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-14 07:39:08,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-14 07:39:08,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-14 07:39:08,325 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 96 [2020-10-14 07:39:08,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:39:08,325 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-14 07:39:08,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 07:39:08,325 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-14 07:39:08,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 07:39:08,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:39:08,326 INFO L422 BasicCegarLoop]: trace histogram [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 07:39:08,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 07:39:08,327 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:39:08,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:39:08,327 INFO L82 PathProgramCache]: Analyzing trace with hash -170355679, now seen corresponding path program 17 times [2020-10-14 07:39:08,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:39:08,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749006864] [2020-10-14 07:39:08,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:39:08,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:08,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:08,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:08,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:08,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:13,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:13,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 07:39:13,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:39:13,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 07:39:13,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:13,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:13,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 07:39:13,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 07:39:13,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 07:39:13,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:13,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:39:13,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:13,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:13,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:13,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:39:13,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:13,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 07:39:13,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:13,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:13,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:13,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:13,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:13,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:13,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 07:39:13,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:13,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:13,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:13,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:39:13,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:13,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 07:39:13,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:13,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:13,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 07:39:13,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:39:13,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 07:39:13,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:13,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 07:39:13,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:13,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:13,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:13,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:13,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:39:13,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:13,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 07:39:13,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:13,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:13,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:13,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 07:39:13,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:13,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:13,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 07:39:13,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:13,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:13,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:13,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:13,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 07:39:13,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:13,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 07:39:13,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:13,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:13,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:13,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 07:39:13,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:13,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:13,563 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 0 proven. 281 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2020-10-14 07:39:13,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [749006864] [2020-10-14 07:39:13,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:39:13,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 07:39:13,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014260737] [2020-10-14 07:39:13,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 07:39:13,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:39:13,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 07:39:13,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:39:13,565 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 11 states. [2020-10-14 07:39:13,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:39:13,778 INFO L93 Difference]: Finished difference Result 103 states and 113 transitions. [2020-10-14 07:39:13,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 07:39:13,778 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2020-10-14 07:39:13,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:39:13,779 INFO L225 Difference]: With dead ends: 103 [2020-10-14 07:39:13,779 INFO L226 Difference]: Without dead ends: 64 [2020-10-14 07:39:13,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 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 07:39:13,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-14 07:39:13,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-14 07:39:13,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-14 07:39:13,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-14 07:39:13,784 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 98 [2020-10-14 07:39:13,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:39:13,785 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-14 07:39:13,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 07:39:13,785 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-14 07:39:13,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 07:39:13,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:39:13,786 INFO L422 BasicCegarLoop]: trace histogram [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 07:39:13,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 07:39:13,787 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:39:13,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:39:13,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1859044833, now seen corresponding path program 18 times [2020-10-14 07:39:13,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:39:13,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094927219] [2020-10-14 07:39:13,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:39:13,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:13,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:13,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:13,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:14,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:18,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:18,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 07:39:18,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:39:18,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 07:39:18,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:18,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:18,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 07:39:18,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:39:18,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 07:39:18,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:18,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:39:18,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:18,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:18,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:18,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:39:18,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:18,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:39:18,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:18,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:18,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:18,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:18,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:18,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:18,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 07:39:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:18,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:18,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:18,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:18,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:39:18,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:18,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 07:39:18,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:18,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:18,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:18,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 07:39:18,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:18,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:18,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 07:39:18,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:18,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:18,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:18,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:18,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:39:18,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:18,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 07:39:18,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:18,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:18,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:18,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 07:39:18,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:18,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:18,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 07:39:18,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:19,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:19,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:19,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:19,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:39:19,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:19,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 07:39:19,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:19,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:19,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:19,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 07:39:19,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:19,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:19,063 INFO L134 CoverageAnalysis]: Checked inductivity of 713 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 664 trivial. 0 not checked. [2020-10-14 07:39:19,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094927219] [2020-10-14 07:39:19,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:39:19,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 07:39:19,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841031815] [2020-10-14 07:39:19,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 07:39:19,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:39:19,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 07:39:19,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:39:19,065 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 11 states. [2020-10-14 07:39:19,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:39:19,176 INFO L93 Difference]: Finished difference Result 108 states and 116 transitions. [2020-10-14 07:39:19,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 07:39:19,178 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2020-10-14 07:39:19,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:39:19,179 INFO L225 Difference]: With dead ends: 108 [2020-10-14 07:39:19,179 INFO L226 Difference]: Without dead ends: 66 [2020-10-14 07:39:19,180 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 07:39:19,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-14 07:39:19,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-14 07:39:19,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-14 07:39:19,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-14 07:39:19,185 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 104 [2020-10-14 07:39:19,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:39:19,186 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-14 07:39:19,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 07:39:19,186 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-14 07:39:19,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 07:39:19,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:39:19,187 INFO L422 BasicCegarLoop]: trace histogram [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 07:39:19,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 07:39:19,187 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:39:19,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:39:19,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1822803073, now seen corresponding path program 19 times [2020-10-14 07:39:19,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:39:19,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067406903] [2020-10-14 07:39:19,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:39:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:19,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:19,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:19,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:19,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:24,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:24,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 07:39:24,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:39:24,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 07:39:24,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:24,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:24,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 07:39:24,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 07:39:24,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 07:39:24,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:24,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:39:24,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:24,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:24,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:24,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:39:24,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:24,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:39:24,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:24,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:24,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:24,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:24,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:24,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:39:24,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:39:24,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:24,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:24,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:24,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:24,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:39:24,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:24,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 07:39:24,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:24,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:24,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:24,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:24,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:24,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:39:24,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 07:39:24,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:24,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:24,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:24,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:24,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:39:24,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:24,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 07:39:24,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:24,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:24,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:24,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:24,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:24,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:24,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 07:39:24,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:24,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:24,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:24,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:24,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:39:24,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:24,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-14 07:39:24,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:24,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:24,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:24,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 07:39:24,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:24,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:39:24,526 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2020-10-14 07:39:24,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067406903] [2020-10-14 07:39:24,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:39:24,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 07:39:24,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275799426] [2020-10-14 07:39:24,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 07:39:24,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:39:24,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 07:39:24,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 07:39:24,535 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 9 states. [2020-10-14 07:39:24,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:39:24,621 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2020-10-14 07:39:24,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 07:39:24,621 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2020-10-14 07:39:24,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:39:24,622 INFO L225 Difference]: With dead ends: 95 [2020-10-14 07:39:24,622 INFO L226 Difference]: Without dead ends: 68 [2020-10-14 07:39:24,623 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 07:39:24,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-14 07:39:24,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-14 07:39:24,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-14 07:39:24,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-14 07:39:24,635 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 106 [2020-10-14 07:39:24,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:39:24,636 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-14 07:39:24,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 07:39:24,636 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-14 07:39:24,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 07:39:24,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:39:24,637 INFO L422 BasicCegarLoop]: trace histogram [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 07:39:24,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 07:39:24,638 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:39:24,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:39:24,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1068127871, now seen corresponding path program 20 times [2020-10-14 07:39:24,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:39:24,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981235397] [2020-10-14 07:39:24,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:39:24,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:24,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:24,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:24,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:24,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:29,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:29,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 07:39:29,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:39:29,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 07:39:29,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:29,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:29,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 07:39:29,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:39:29,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 07:39:29,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:29,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:39:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:29,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:29,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:29,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:39:29,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:29,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:39:29,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:29,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:29,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:29,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:29,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:29,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:29,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 07:39:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:29,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:29,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:29,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:29,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:39:29,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:29,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 07:39:29,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:29,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:29,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:29,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 07:39:29,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:29,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:29,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 07:39:29,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:29,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:29,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:29,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:29,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:39:29,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:29,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 07:39:29,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:29,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:29,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:29,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 07:39:29,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:29,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:29,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 07:39:29,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:29,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:29,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:29,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:29,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:39:29,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:29,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 07:39:29,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:29,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:29,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:29,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 07:39:29,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:29,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:29,961 INFO L134 CoverageAnalysis]: Checked inductivity of 739 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2020-10-14 07:39:29,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981235397] [2020-10-14 07:39:29,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:39:29,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 07:39:29,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508473165] [2020-10-14 07:39:29,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 07:39:29,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:39:29,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 07:39:29,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 07:39:29,962 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 12 states. [2020-10-14 07:39:30,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:39:30,073 INFO L93 Difference]: Finished difference Result 114 states and 122 transitions. [2020-10-14 07:39:30,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 07:39:30,074 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 108 [2020-10-14 07:39:30,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:39:30,075 INFO L225 Difference]: With dead ends: 114 [2020-10-14 07:39:30,075 INFO L226 Difference]: Without dead ends: 70 [2020-10-14 07:39:30,076 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 07:39:30,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-14 07:39:30,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-14 07:39:30,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-14 07:39:30,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-14 07:39:30,086 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 108 [2020-10-14 07:39:30,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:39:30,087 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-14 07:39:30,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 07:39:30,087 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-14 07:39:30,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 07:39:30,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:39:30,088 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 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 07:39:30,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 07:39:30,089 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:39:30,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:39:30,090 INFO L82 PathProgramCache]: Analyzing trace with hash -550576159, now seen corresponding path program 21 times [2020-10-14 07:39:30,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:39:30,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068724968] [2020-10-14 07:39:30,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:39:30,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:30,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:30,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:30,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:30,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:35,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:35,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 07:39:35,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:39:35,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-14 07:39:35,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:35,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:35,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 07:39:35,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:39:35,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 07:39:35,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:35,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:39:35,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:35,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:35,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:35,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:39:35,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:35,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:39:35,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:35,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:35,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:35,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:35,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:35,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:35,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 07:39:35,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:35,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:35,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:35,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:35,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:39:35,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:35,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 07:39:35,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:35,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:35,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:35,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 07:39:35,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:35,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:35,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 07:39:35,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:35,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:35,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:35,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:35,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:39:35,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:35,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 07:39:35,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:35,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:35,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:35,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 07:39:35,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:35,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:35,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 07:39:35,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:35,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:35,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:35,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:35,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:39:35,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:35,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 07:39:35,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:35,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:35,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:35,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 07:39:35,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:35,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:35,425 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2020-10-14 07:39:35,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068724968] [2020-10-14 07:39:35,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:39:35,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 07:39:35,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722811173] [2020-10-14 07:39:35,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 07:39:35,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:39:35,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 07:39:35,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 07:39:35,426 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 13 states. [2020-10-14 07:39:35,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:39:35,522 INFO L93 Difference]: Finished difference Result 116 states and 124 transitions. [2020-10-14 07:39:35,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 07:39:35,523 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 110 [2020-10-14 07:39:35,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:39:35,524 INFO L225 Difference]: With dead ends: 116 [2020-10-14 07:39:35,525 INFO L226 Difference]: Without dead ends: 72 [2020-10-14 07:39:35,525 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 07:39:35,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-14 07:39:35,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-14 07:39:35,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-14 07:39:35,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-14 07:39:35,531 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 110 [2020-10-14 07:39:35,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:39:35,532 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-14 07:39:35,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 07:39:35,532 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-14 07:39:35,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-14 07:39:35,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:39:35,533 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 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 07:39:35,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 07:39:35,534 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:39:35,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:39:35,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1346987837, now seen corresponding path program 22 times [2020-10-14 07:39:35,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:39:35,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748222353] [2020-10-14 07:39:35,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:39:35,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:35,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:35,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:35,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:35,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:40,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:40,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 07:39:40,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:39:40,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 07:39:40,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:40,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:40,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 07:39:40,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 07:39:40,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 07:39:40,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:40,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:39:40,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:40,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:40,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:40,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:39:40,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:40,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:39:40,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:40,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:40,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:40,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:40,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:40,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:40,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 07:39:40,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:40,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:40,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:40,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:39:40,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:40,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 07:39:40,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:40,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:40,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 07:39:40,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:39:40,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 07:39:40,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:40,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-14 07:39:40,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:40,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:40,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:40,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:40,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:39:40,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:40,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 07:39:40,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:40,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:40,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:40,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 07:39:40,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:40,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:39:40,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 07:39:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:40,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:40,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:40,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:40,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 07:39:40,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:40,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 07:39:40,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:40,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:40,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:40,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 07:39:40,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:40,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:40,906 INFO L134 CoverageAnalysis]: Checked inductivity of 775 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2020-10-14 07:39:40,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748222353] [2020-10-14 07:39:40,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:39:40,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 07:39:40,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291064433] [2020-10-14 07:39:40,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 07:39:40,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:39:40,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 07:39:40,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 07:39:40,910 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 12 states. [2020-10-14 07:39:41,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:39:41,134 INFO L93 Difference]: Finished difference Result 117 states and 127 transitions. [2020-10-14 07:39:41,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 07:39:41,135 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2020-10-14 07:39:41,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:39:41,136 INFO L225 Difference]: With dead ends: 117 [2020-10-14 07:39:41,136 INFO L226 Difference]: Without dead ends: 74 [2020-10-14 07:39:41,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 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 07:39:41,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-14 07:39:41,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-14 07:39:41,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-14 07:39:41,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-14 07:39:41,144 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 112 [2020-10-14 07:39:41,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:39:41,144 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-14 07:39:41,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 07:39:41,144 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-14 07:39:41,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 07:39:41,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:39:41,145 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 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 07:39:41,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 07:39:41,146 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:39:41,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:39:41,146 INFO L82 PathProgramCache]: Analyzing trace with hash -863773631, now seen corresponding path program 23 times [2020-10-14 07:39:41,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:39:41,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68644661] [2020-10-14 07:39:41,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:39:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:41,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:41,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:41,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:41,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:46,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:46,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 07:39:46,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:39:46,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-14 07:39:46,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:46,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:46,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 07:39:46,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 07:39:46,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 07:39:46,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:46,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:39:46,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:46,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:46,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:46,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:39:46,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:46,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:39:46,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:46,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:46,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:46,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:46,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:46,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:46,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 07:39:46,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:46,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:46,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:46,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 07:39:46,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:46,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 07:39:46,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:46,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:46,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 07:39:46,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:39:46,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 07:39:46,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:46,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 07:39:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:46,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:46,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:46,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:46,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 07:39:46,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:46,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 07:39:46,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:46,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:46,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:46,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 07:39:46,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:46,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:46,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 07:39:46,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:46,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:46,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:46,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:46,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 07:39:46,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:46,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 07:39:46,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:46,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:46,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:46,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 07:39:46,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:46,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:46,471 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 0 proven. 449 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2020-10-14 07:39:46,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [68644661] [2020-10-14 07:39:46,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:39:46,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 07:39:46,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139280627] [2020-10-14 07:39:46,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 07:39:46,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:39:46,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 07:39:46,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 07:39:46,473 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 13 states. [2020-10-14 07:39:46,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:39:46,740 INFO L93 Difference]: Finished difference Result 121 states and 131 transitions. [2020-10-14 07:39:46,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 07:39:46,741 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 118 [2020-10-14 07:39:46,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:39:46,742 INFO L225 Difference]: With dead ends: 121 [2020-10-14 07:39:46,742 INFO L226 Difference]: Without dead ends: 76 [2020-10-14 07:39:46,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 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 07:39:46,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-14 07:39:46,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-14 07:39:46,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-14 07:39:46,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-14 07:39:46,751 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 118 [2020-10-14 07:39:46,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:39:46,752 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-14 07:39:46,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 07:39:46,752 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-14 07:39:46,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-14 07:39:46,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:39:46,753 INFO L422 BasicCegarLoop]: trace histogram [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 07:39:46,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 07:39:46,760 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:39:46,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:39:46,760 INFO L82 PathProgramCache]: Analyzing trace with hash 550390079, now seen corresponding path program 24 times [2020-10-14 07:39:46,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:39:46,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365759511] [2020-10-14 07:39:46,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:39:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:46,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:46,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:46,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:47,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:51,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:51,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 07:39:51,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:39:51,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-14 07:39:51,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:51,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:51,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 07:39:51,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-14 07:39:51,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 07:39:51,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:51,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:39:51,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:51,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:51,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:51,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:39:51,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:51,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:39:51,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:51,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:51,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:51,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:51,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:51,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:51,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 07:39:51,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:51,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:51,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:51,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:51,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:39:51,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:51,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 07:39:51,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:51,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:51,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:51,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:51,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:51,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:51,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 07:39:51,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:51,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:51,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:52,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:52,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:39:52,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:52,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 07:39:52,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:52,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:52,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:52,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:52,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:52,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:52,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 07:39:52,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:52,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:52,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:52,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:52,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:39:52,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:52,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 07:39:52,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:52,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:52,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:52,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 07:39:52,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:52,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:52,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-14 07:39:52,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365759511] [2020-10-14 07:39:52,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:39:52,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 07:39:52,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032486103] [2020-10-14 07:39:52,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 07:39:52,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:39:52,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 07:39:52,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 07:39:52,117 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 10 states. [2020-10-14 07:39:52,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:39:52,223 INFO L93 Difference]: Finished difference Result 109 states and 114 transitions. [2020-10-14 07:39:52,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 07:39:52,223 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 124 [2020-10-14 07:39:52,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:39:52,224 INFO L225 Difference]: With dead ends: 109 [2020-10-14 07:39:52,224 INFO L226 Difference]: Without dead ends: 78 [2020-10-14 07:39:52,225 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 07:39:52,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-14 07:39:52,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-14 07:39:52,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-14 07:39:52,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-14 07:39:52,233 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 124 [2020-10-14 07:39:52,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:39:52,233 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-14 07:39:52,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 07:39:52,233 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-14 07:39:52,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-14 07:39:52,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:39:52,239 INFO L422 BasicCegarLoop]: trace histogram [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 07:39:52,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 07:39:52,239 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:39:52,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:39:52,240 INFO L82 PathProgramCache]: Analyzing trace with hash -820345923, now seen corresponding path program 25 times [2020-10-14 07:39:52,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:39:52,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409972436] [2020-10-14 07:39:52,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:39:52,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:52,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:52,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:52,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:52,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:57,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:57,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 07:39:57,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:39:57,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-14 07:39:57,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:57,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:57,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 07:39:57,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:39:57,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 07:39:57,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:57,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:39:57,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:57,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:57,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:57,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:39:57,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:39:57,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:39:57,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:57,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:57,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:57,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:39:57,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:57,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:57,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 07:39:57,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:57,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:57,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:57,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:57,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:39:57,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:57,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 07:39:57,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:57,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:57,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:57,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 07:39:57,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:57,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:57,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 07:39:57,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:57,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:57,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:57,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:57,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:39:57,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:57,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 07:39:57,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:57,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:57,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:57,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 07:39:57,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:57,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:57,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 07:39:57,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:57,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:57,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:57,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:39:57,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:39:57,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:39:57,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 07:39:57,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:39:57,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:39:57,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:39:57,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 07:39:57,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:39:57,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:39:57,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2020-10-14 07:39:57,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409972436] [2020-10-14 07:39:57,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:39:57,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 07:39:57,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224920103] [2020-10-14 07:39:57,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 07:39:57,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:39:57,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 07:39:57,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 07:39:57,648 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 14 states. [2020-10-14 07:39:57,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:39:57,772 INFO L93 Difference]: Finished difference Result 130 states and 138 transitions. [2020-10-14 07:39:57,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 07:39:57,772 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 126 [2020-10-14 07:39:57,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:39:57,773 INFO L225 Difference]: With dead ends: 130 [2020-10-14 07:39:57,773 INFO L226 Difference]: Without dead ends: 80 [2020-10-14 07:39:57,774 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 07:39:57,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-14 07:39:57,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-14 07:39:57,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-14 07:39:57,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-14 07:39:57,783 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 126 [2020-10-14 07:39:57,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:39:57,783 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-14 07:39:57,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 07:39:57,783 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-14 07:39:57,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 07:39:57,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:39:57,784 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 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 07:39:57,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 07:39:57,785 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:39:57,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:39:57,785 INFO L82 PathProgramCache]: Analyzing trace with hash -14141281, now seen corresponding path program 26 times [2020-10-14 07:39:57,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:39:57,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630319643] [2020-10-14 07:39:57,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:39:57,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:39:57,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:57,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:57,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:39:58,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:02,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:02,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 07:40:02,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:40:02,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 07:40:02,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:02,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:02,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 07:40:02,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 07:40:02,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 07:40:02,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:02,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:40:02,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:02,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:02,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:02,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:40:02,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:02,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:40:02,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:02,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:02,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:02,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:02,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:02,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:02,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 07:40:02,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:02,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:02,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:02,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:40:02,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:02,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 07:40:02,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:02,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:02,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 07:40:02,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:40:02,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 07:40:02,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:02,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 07:40:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:03,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:03,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:03,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:03,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:40:03,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:03,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 07:40:03,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:03,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:03,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:03,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 07:40:03,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:03,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:03,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 07:40:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:03,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:03,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:03,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:03,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:40:03,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:03,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 07:40:03,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:03,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:03,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:03,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 07:40:03,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:03,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:03,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1145 backedges. 0 proven. 548 refuted. 0 times theorem prover too weak. 597 trivial. 0 not checked. [2020-10-14 07:40:03,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630319643] [2020-10-14 07:40:03,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:40:03,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 07:40:03,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262923747] [2020-10-14 07:40:03,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 07:40:03,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:40:03,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 07:40:03,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 07:40:03,132 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 14 states. [2020-10-14 07:40:03,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:40:03,418 INFO L93 Difference]: Finished difference Result 131 states and 141 transitions. [2020-10-14 07:40:03,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 07:40:03,419 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 128 [2020-10-14 07:40:03,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:40:03,420 INFO L225 Difference]: With dead ends: 131 [2020-10-14 07:40:03,420 INFO L226 Difference]: Without dead ends: 82 [2020-10-14 07:40:03,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 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 07:40:03,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-14 07:40:03,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-14 07:40:03,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-14 07:40:03,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-14 07:40:03,427 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 128 [2020-10-14 07:40:03,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:40:03,427 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-14 07:40:03,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 07:40:03,427 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-14 07:40:03,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 07:40:03,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:40:03,428 INFO L422 BasicCegarLoop]: trace histogram [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 07:40:03,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 07:40:03,428 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:40:03,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:40:03,429 INFO L82 PathProgramCache]: Analyzing trace with hash 526960157, now seen corresponding path program 27 times [2020-10-14 07:40:03,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:40:03,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254177398] [2020-10-14 07:40:03,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:40:03,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:03,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:03,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:03,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:04,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:08,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:08,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 07:40:08,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:40:08,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 07:40:08,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:08,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:08,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 07:40:08,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-14 07:40:08,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 07:40:08,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:08,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:40:08,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:08,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:08,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:08,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:40:08,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:08,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:40:08,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:08,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:08,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:08,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:08,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:08,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:08,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 07:40:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:08,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:08,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:08,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:08,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 07:40:08,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:08,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 07:40:08,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:08,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:08,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:08,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:08,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:08,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:40:08,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 07:40:08,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:08,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:08,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:08,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:08,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 07:40:08,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:08,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 07:40:08,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:08,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:08,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:08,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:08,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:08,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:08,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 07:40:08,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:08,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:08,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:08,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:08,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 07:40:08,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:08,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 07:40:08,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:08,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:08,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:08,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 07:40:08,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:08,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:08,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1291 trivial. 0 not checked. [2020-10-14 07:40:08,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [254177398] [2020-10-14 07:40:08,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:40:08,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 07:40:08,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923156372] [2020-10-14 07:40:08,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 07:40:08,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:40:08,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 07:40:08,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 07:40:08,823 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 11 states. [2020-10-14 07:40:08,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:40:08,935 INFO L93 Difference]: Finished difference Result 117 states and 122 transitions. [2020-10-14 07:40:08,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 07:40:08,935 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 134 [2020-10-14 07:40:08,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:40:08,936 INFO L225 Difference]: With dead ends: 117 [2020-10-14 07:40:08,937 INFO L226 Difference]: Without dead ends: 84 [2020-10-14 07:40:08,938 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 07:40:08,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-14 07:40:08,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-14 07:40:08,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-14 07:40:08,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-14 07:40:08,943 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 134 [2020-10-14 07:40:08,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:40:08,943 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-14 07:40:08,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 07:40:08,943 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-14 07:40:08,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-14 07:40:08,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:40:08,945 INFO L422 BasicCegarLoop]: trace histogram [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 07:40:08,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 07:40:08,945 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:40:08,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:40:08,945 INFO L82 PathProgramCache]: Analyzing trace with hash 2147103003, now seen corresponding path program 28 times [2020-10-14 07:40:08,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:40:08,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651045834] [2020-10-14 07:40:08,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:40:08,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:08,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:08,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:08,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:09,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:14,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:14,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 07:40:14,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:40:14,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-14 07:40:14,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:14,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:14,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 07:40:14,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 07:40:14,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 07:40:14,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:14,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:40:14,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:14,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:14,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:14,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:40:14,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:14,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:40:14,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:14,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:14,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:14,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:14,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:14,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:14,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 07:40:14,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:14,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:14,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:14,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:14,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 07:40:14,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:14,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 07:40:14,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:14,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:14,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:14,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:14,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:14,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:14,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-14 07:40:14,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:14,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:14,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:14,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 07:40:14,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:14,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 07:40:14,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:14,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:14,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 07:40:14,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:40:14,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 07:40:14,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:14,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-14 07:40:14,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:14,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:14,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:14,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:14,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 07:40:14,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:14,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 07:40:14,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:14,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:14,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:14,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 07:40:14,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:14,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:14,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1355 backedges. 268 proven. 389 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked. [2020-10-14 07:40:14,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651045834] [2020-10-14 07:40:14,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:40:14,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 07:40:14,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724925048] [2020-10-14 07:40:14,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 07:40:14,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:40:14,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 07:40:14,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-14 07:40:14,374 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 15 states. [2020-10-14 07:40:14,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:40:14,653 INFO L93 Difference]: Finished difference Result 139 states and 149 transitions. [2020-10-14 07:40:14,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 07:40:14,653 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 136 [2020-10-14 07:40:14,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:40:14,654 INFO L225 Difference]: With dead ends: 139 [2020-10-14 07:40:14,654 INFO L226 Difference]: Without dead ends: 86 [2020-10-14 07:40:14,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 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 07:40:14,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-14 07:40:14,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-14 07:40:14,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-14 07:40:14,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-14 07:40:14,660 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 136 [2020-10-14 07:40:14,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:40:14,661 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-14 07:40:14,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 07:40:14,661 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-14 07:40:14,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 07:40:14,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:40:14,662 INFO L422 BasicCegarLoop]: trace histogram [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 07:40:14,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 07:40:14,662 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:40:14,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:40:14,663 INFO L82 PathProgramCache]: Analyzing trace with hash -269315943, now seen corresponding path program 29 times [2020-10-14 07:40:14,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:40:14,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607245925] [2020-10-14 07:40:14,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:40:14,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:14,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:14,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:14,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:15,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:19,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:19,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-14 07:40:19,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:40:19,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-14 07:40:19,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:19,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:19,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 07:40:19,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-14 07:40:19,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 07:40:19,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:19,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:40:19,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:19,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:19,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:19,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:40:19,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:19,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:40:19,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:19,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:19,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:19,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:19,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:19,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:19,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 07:40:19,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:19,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:19,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:19,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:19,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 07:40:19,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:19,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 07:40:19,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:19,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:19,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:19,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:19,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:19,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:19,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 07:40:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:19,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:19,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:19,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 07:40:19,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:19,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 07:40:19,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:19,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:19,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 07:40:19,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:40:19,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 07:40:19,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:20,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-14 07:40:20,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:20,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:20,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:20,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:20,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 07:40:20,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:20,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 07:40:20,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:20,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:20,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:20,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 07:40:20,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:20,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:20,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 316 proven. 460 refuted. 0 times theorem prover too weak. 792 trivial. 0 not checked. [2020-10-14 07:40:20,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607245925] [2020-10-14 07:40:20,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:40:20,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 07:40:20,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837734204] [2020-10-14 07:40:20,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 07:40:20,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:40:20,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 07:40:20,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-14 07:40:20,113 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 16 states. [2020-10-14 07:40:20,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:40:20,451 INFO L93 Difference]: Finished difference Result 143 states and 153 transitions. [2020-10-14 07:40:20,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 07:40:20,452 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 142 [2020-10-14 07:40:20,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:40:20,453 INFO L225 Difference]: With dead ends: 143 [2020-10-14 07:40:20,453 INFO L226 Difference]: Without dead ends: 88 [2020-10-14 07:40:20,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 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 07:40:20,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-14 07:40:20,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-14 07:40:20,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-14 07:40:20,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-14 07:40:20,459 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 142 [2020-10-14 07:40:20,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:40:20,459 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-14 07:40:20,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 07:40:20,460 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-14 07:40:20,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-14 07:40:20,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:40:20,461 INFO L422 BasicCegarLoop]: trace histogram [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 07:40:20,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 07:40:20,461 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:40:20,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:40:20,462 INFO L82 PathProgramCache]: Analyzing trace with hash -825648745, now seen corresponding path program 30 times [2020-10-14 07:40:20,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:40:20,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170787946] [2020-10-14 07:40:20,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:40:20,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:20,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:20,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:20,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:20,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:25,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:25,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 07:40:25,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:40:25,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 07:40:25,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:25,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:25,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 07:40:25,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:40:25,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 07:40:25,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:25,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:40:25,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:25,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:25,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:25,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:40:25,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:25,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:40:25,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:25,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:25,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:25,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:25,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:25,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:25,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 07:40:25,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:25,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:25,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:25,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:25,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 07:40:25,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:25,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 07:40:25,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:25,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:25,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:25,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 07:40:25,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:25,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:25,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 07:40:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:25,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:25,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:25,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:25,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 07:40:25,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:25,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 07:40:25,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:25,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:25,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:25,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 07:40:25,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:25,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:25,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-14 07:40:25,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:25,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:25,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:25,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:25,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 07:40:25,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:25,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 07:40:25,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:25,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:25,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:25,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 07:40:25,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:25,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:25,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1799 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 1678 trivial. 0 not checked. [2020-10-14 07:40:25,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1170787946] [2020-10-14 07:40:25,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:40:25,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 07:40:25,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563827061] [2020-10-14 07:40:25,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 07:40:25,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:40:25,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 07:40:25,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-14 07:40:25,902 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 15 states. [2020-10-14 07:40:26,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:40:26,043 INFO L93 Difference]: Finished difference Result 148 states and 156 transitions. [2020-10-14 07:40:26,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 07:40:26,043 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 148 [2020-10-14 07:40:26,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:40:26,044 INFO L225 Difference]: With dead ends: 148 [2020-10-14 07:40:26,045 INFO L226 Difference]: Without dead ends: 90 [2020-10-14 07:40:26,045 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 07:40:26,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-14 07:40:26,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-14 07:40:26,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-14 07:40:26,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-14 07:40:26,056 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 148 [2020-10-14 07:40:26,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:40:26,056 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-14 07:40:26,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 07:40:26,057 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-14 07:40:26,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-14 07:40:26,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:40:26,058 INFO L422 BasicCegarLoop]: trace histogram [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 07:40:26,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 07:40:26,058 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:40:26,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:40:26,058 INFO L82 PathProgramCache]: Analyzing trace with hash 648124665, now seen corresponding path program 31 times [2020-10-14 07:40:26,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:40:26,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358357006] [2020-10-14 07:40:26,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:40:26,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:26,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:26,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:26,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:26,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:31,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:31,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 07:40:31,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:40:31,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-14 07:40:31,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:31,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:31,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 07:40:31,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:40:31,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 07:40:31,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:31,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:40:31,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:31,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:31,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:31,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:40:31,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:31,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:40:31,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:31,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:31,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:31,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:31,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:31,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:31,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 07:40:31,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:31,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:31,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:31,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:31,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 07:40:31,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:31,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 07:40:31,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:31,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:31,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:31,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 07:40:31,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:31,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:31,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 07:40:31,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:31,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:31,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:31,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:31,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 07:40:31,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:31,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 07:40:31,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:31,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:31,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:31,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 07:40:31,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:31,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:31,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-14 07:40:31,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:31,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:31,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:31,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:31,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 07:40:31,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:31,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 07:40:31,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:31,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:31,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:31,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 07:40:31,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:31,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:31,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1822 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1678 trivial. 0 not checked. [2020-10-14 07:40:31,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1358357006] [2020-10-14 07:40:31,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:40:31,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 07:40:31,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207036255] [2020-10-14 07:40:31,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 07:40:31,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:40:31,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 07:40:31,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-14 07:40:31,564 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 16 states. [2020-10-14 07:40:31,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:40:31,714 INFO L93 Difference]: Finished difference Result 150 states and 158 transitions. [2020-10-14 07:40:31,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 07:40:31,715 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 150 [2020-10-14 07:40:31,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:40:31,716 INFO L225 Difference]: With dead ends: 150 [2020-10-14 07:40:31,716 INFO L226 Difference]: Without dead ends: 92 [2020-10-14 07:40:31,717 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 07:40:31,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-14 07:40:31,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-14 07:40:31,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-14 07:40:31,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-10-14 07:40:31,724 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 150 [2020-10-14 07:40:31,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:40:31,724 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-10-14 07:40:31,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 07:40:31,724 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-10-14 07:40:31,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 07:40:31,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:40:31,726 INFO L422 BasicCegarLoop]: trace histogram [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 07:40:31,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 07:40:31,726 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:40:31,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:40:31,726 INFO L82 PathProgramCache]: Analyzing trace with hash -394836005, now seen corresponding path program 32 times [2020-10-14 07:40:31,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:40:31,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892559795] [2020-10-14 07:40:31,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:40:31,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:31,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:31,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:31,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:33,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:36,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:36,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 07:40:36,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:40:36,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-14 07:40:36,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:36,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:36,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 07:40:36,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-14 07:40:36,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 07:40:36,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:36,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:40:36,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:36,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:36,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:36,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:40:36,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:36,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:40:36,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:36,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:36,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:36,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:36,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:36,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:36,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 07:40:36,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:36,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:36,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:36,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:36,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 07:40:36,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:36,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 07:40:36,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:36,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:36,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:36,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:36,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:36,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:36,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 07:40:36,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:36,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:36,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:37,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:37,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 07:40:37,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:37,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 07:40:37,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:37,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:37,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:37,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:37,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:37,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:37,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 07:40:37,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:37,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:37,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:37,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:37,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 07:40:37,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:37,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 07:40:37,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:37,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:37,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:37,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 07:40:37,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:37,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:37,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1847 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 1783 trivial. 0 not checked. [2020-10-14 07:40:37,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892559795] [2020-10-14 07:40:37,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:40:37,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 07:40:37,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707139114] [2020-10-14 07:40:37,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 07:40:37,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:40:37,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 07:40:37,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 07:40:37,148 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 12 states. [2020-10-14 07:40:37,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:40:37,265 INFO L93 Difference]: Finished difference Result 131 states and 136 transitions. [2020-10-14 07:40:37,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 07:40:37,266 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 152 [2020-10-14 07:40:37,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:40:37,267 INFO L225 Difference]: With dead ends: 131 [2020-10-14 07:40:37,267 INFO L226 Difference]: Without dead ends: 94 [2020-10-14 07:40:37,268 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 07:40:37,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-14 07:40:37,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-14 07:40:37,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-14 07:40:37,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2020-10-14 07:40:37,274 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 152 [2020-10-14 07:40:37,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:40:37,275 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2020-10-14 07:40:37,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 07:40:37,275 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2020-10-14 07:40:37,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-14 07:40:37,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:40:37,276 INFO L422 BasicCegarLoop]: trace histogram [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 07:40:37,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 07:40:37,276 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:40:37,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:40:37,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1658657625, now seen corresponding path program 33 times [2020-10-14 07:40:37,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:40:37,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522293853] [2020-10-14 07:40:37,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:40:37,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:37,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:37,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:37,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:38,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:42,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:42,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 07:40:42,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:40:42,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-14 07:40:42,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:42,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:42,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 07:40:42,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 07:40:42,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 07:40:42,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:42,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:40:42,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:42,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:42,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:42,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:40:42,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:42,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:40:42,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:42,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:42,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:42,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:42,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:42,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:42,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 07:40:42,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:42,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:42,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:42,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 07:40:42,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:42,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 07:40:42,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:42,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:42,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 07:40:42,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:40:42,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 07:40:42,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:42,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 07:40:42,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:42,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:42,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:42,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:42,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 07:40:42,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:42,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-14 07:40:42,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:42,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:42,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:42,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 07:40:42,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:42,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:42,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-14 07:40:42,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:42,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:42,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:42,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:42,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 07:40:42,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:42,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 07:40:42,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:42,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:42,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:42,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 07:40:42,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:42,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:42,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1864 backedges. 0 proven. 905 refuted. 0 times theorem prover too weak. 959 trivial. 0 not checked. [2020-10-14 07:40:42,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522293853] [2020-10-14 07:40:42,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:40:42,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 07:40:42,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139856206] [2020-10-14 07:40:42,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 07:40:42,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:40:42,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 07:40:42,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-14 07:40:42,823 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 17 states. [2020-10-14 07:40:43,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:40:43,201 INFO L93 Difference]: Finished difference Result 155 states and 165 transitions. [2020-10-14 07:40:43,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 07:40:43,202 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 154 [2020-10-14 07:40:43,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:40:43,203 INFO L225 Difference]: With dead ends: 155 [2020-10-14 07:40:43,203 INFO L226 Difference]: Without dead ends: 96 [2020-10-14 07:40:43,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 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 07:40:43,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-14 07:40:43,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-14 07:40:43,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-14 07:40:43,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2020-10-14 07:40:43,210 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 154 [2020-10-14 07:40:43,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:40:43,211 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2020-10-14 07:40:43,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 07:40:43,211 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2020-10-14 07:40:43,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-14 07:40:43,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:40:43,213 INFO L422 BasicCegarLoop]: trace histogram [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 07:40:43,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 07:40:43,213 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:40:43,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:40:43,213 INFO L82 PathProgramCache]: Analyzing trace with hash 501838679, now seen corresponding path program 34 times [2020-10-14 07:40:43,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:40:43,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589988048] [2020-10-14 07:40:43,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:40:43,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:43,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:43,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:43,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:44,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:48,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:48,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-14 07:40:48,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:40:48,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-14 07:40:48,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:48,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:48,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 07:40:48,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:40:48,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 07:40:48,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:48,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:40:48,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:48,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:48,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:48,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:40:48,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:48,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:40:48,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:48,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:48,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:48,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:48,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:48,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:48,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 07:40:48,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:48,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:48,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:48,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:48,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 07:40:48,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:48,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 07:40:48,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:48,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:48,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:48,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-14 07:40:48,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:48,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:48,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-14 07:40:48,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:48,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:48,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:48,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:48,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 07:40:48,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:48,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 07:40:48,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:48,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:48,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:48,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-14 07:40:48,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:48,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:48,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-14 07:40:48,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:48,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:48,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:48,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:48,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 07:40:48,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:48,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 07:40:48,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:48,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:48,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:48,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-14 07:40:48,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:48,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:48,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2113 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 1944 trivial. 0 not checked. [2020-10-14 07:40:48,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589988048] [2020-10-14 07:40:48,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:40:48,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 07:40:48,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418136965] [2020-10-14 07:40:48,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 07:40:48,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:40:48,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 07:40:48,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-14 07:40:48,808 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 17 states. [2020-10-14 07:40:48,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:40:48,959 INFO L93 Difference]: Finished difference Result 160 states and 168 transitions. [2020-10-14 07:40:48,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 07:40:48,960 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 160 [2020-10-14 07:40:48,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:40:48,961 INFO L225 Difference]: With dead ends: 160 [2020-10-14 07:40:48,961 INFO L226 Difference]: Without dead ends: 98 [2020-10-14 07:40:48,962 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 07:40:48,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-14 07:40:48,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-14 07:40:48,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-14 07:40:48,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-10-14 07:40:48,967 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 160 [2020-10-14 07:40:48,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:40:48,967 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-10-14 07:40:48,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 07:40:48,967 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-10-14 07:40:48,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-14 07:40:48,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:40:48,969 INFO L422 BasicCegarLoop]: trace histogram [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 07:40:48,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 07:40:48,969 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:40:48,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:40:48,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1021538233, now seen corresponding path program 35 times [2020-10-14 07:40:48,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:40:48,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464488027] [2020-10-14 07:40:48,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:40:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:48,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:49,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:49,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:50,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:54,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:54,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-14 07:40:54,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:40:54,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 07:40:54,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:54,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:54,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 07:40:54,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-14 07:40:54,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 07:40:54,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:40:54,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:40:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:54,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:54,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:54,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:40:54,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:54,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:40:54,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:54,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:54,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:54,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:54,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:54,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:40:54,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 07:40:54,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:54,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:54,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:54,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:54,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 07:40:54,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:54,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 07:40:54,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:54,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:54,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:54,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:54,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:54,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:54,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 07:40:54,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:54,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:54,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:54,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:54,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 07:40:54,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:54,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 07:40:54,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:54,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:54,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:54,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:54,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:54,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:54,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-14 07:40:54,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:54,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:54,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:54,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:54,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 07:40:54,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:54,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 07:40:54,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:54,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:54,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:54,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-14 07:40:54,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:54,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:54,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2140 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2020-10-14 07:40:54,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464488027] [2020-10-14 07:40:54,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:40:54,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 07:40:54,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007101494] [2020-10-14 07:40:54,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 07:40:54,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:40:54,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 07:40:54,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 07:40:54,450 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 13 states. [2020-10-14 07:40:54,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:40:54,542 INFO L93 Difference]: Finished difference Result 139 states and 144 transitions. [2020-10-14 07:40:54,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 07:40:54,542 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 162 [2020-10-14 07:40:54,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:40:54,543 INFO L225 Difference]: With dead ends: 139 [2020-10-14 07:40:54,544 INFO L226 Difference]: Without dead ends: 100 [2020-10-14 07:40:54,544 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 07:40:54,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-14 07:40:54,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-14 07:40:54,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-14 07:40:54,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2020-10-14 07:40:54,550 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 162 [2020-10-14 07:40:54,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:40:54,550 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2020-10-14 07:40:54,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 07:40:54,550 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2020-10-14 07:40:54,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-14 07:40:54,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:40:54,552 INFO L422 BasicCegarLoop]: trace histogram [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 07:40:54,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 07:40:54,552 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:40:54,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:40:54,553 INFO L82 PathProgramCache]: Analyzing trace with hash 526103479, now seen corresponding path program 36 times [2020-10-14 07:40:54,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:40:54,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720187609] [2020-10-14 07:40:54,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:40:54,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:54,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:54,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:54,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:55,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:59,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:59,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 07:40:59,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:40:59,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 07:40:59,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:59,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:59,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 07:40:59,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-14 07:40:59,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 07:40:59,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:59,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:40:59,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:59,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:59,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:59,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:40:59,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:59,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:40:59,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:59,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:59,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:59,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:40:59,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:59,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:59,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 07:40:59,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:59,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:59,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:59,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 07:40:59,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:40:59,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 07:40:59,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:59,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:59,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 07:40:59,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:40:59,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 07:40:59,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:59,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 07:40:59,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:59,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:59,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:40:59,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:40:59,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 07:40:59,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:40:59,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-14 07:40:59,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:40:59,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:40:59,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:40:59,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-14 07:40:59,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:40:59,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:40:59,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-14 07:40:59,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:40:59,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:00,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:00,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:00,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 07:41:00,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:00,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 07:41:00,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:00,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:00,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:00,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-14 07:41:00,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:00,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:00,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2159 backedges. 0 proven. 1044 refuted. 0 times theorem prover too weak. 1115 trivial. 0 not checked. [2020-10-14 07:41:00,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720187609] [2020-10-14 07:41:00,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:41:00,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 07:41:00,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081582396] [2020-10-14 07:41:00,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 07:41:00,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:41:00,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 07:41:00,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-14 07:41:00,069 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand 18 states. [2020-10-14 07:41:00,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:41:00,490 INFO L93 Difference]: Finished difference Result 165 states and 175 transitions. [2020-10-14 07:41:00,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 07:41:00,491 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 164 [2020-10-14 07:41:00,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:41:00,492 INFO L225 Difference]: With dead ends: 165 [2020-10-14 07:41:00,492 INFO L226 Difference]: Without dead ends: 102 [2020-10-14 07:41:00,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 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 07:41:00,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-14 07:41:00,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-14 07:41:00,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-14 07:41:00,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2020-10-14 07:41:00,500 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 164 [2020-10-14 07:41:00,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:41:00,500 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2020-10-14 07:41:00,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 07:41:00,500 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2020-10-14 07:41:00,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 07:41:00,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:41:00,501 INFO L422 BasicCegarLoop]: trace histogram [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 07:41:00,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 07:41:00,502 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:41:00,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:41:00,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1658590155, now seen corresponding path program 37 times [2020-10-14 07:41:00,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:41:00,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714532019] [2020-10-14 07:41:00,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:41:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:00,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:00,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:00,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:01,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:05,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:05,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-14 07:41:05,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:41:05,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-14 07:41:05,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:05,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:05,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 07:41:05,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:41:05,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 07:41:05,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:05,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:41:05,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:05,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:05,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:05,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:41:05,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:05,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:41:05,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:05,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:05,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:05,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:05,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:05,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:05,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 07:41:05,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:05,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:05,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:05,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:05,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:41:05,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:05,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-14 07:41:05,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:05,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:05,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:05,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 07:41:05,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:05,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:05,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 07:41:05,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:05,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:05,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:06,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:06,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:41:06,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:06,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-14 07:41:06,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:06,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:06,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:06,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 07:41:06,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:06,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:06,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-14 07:41:06,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:06,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:06,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:06,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:06,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:41:06,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:06,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-14 07:41:06,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:06,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:06,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:06,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 07:41:06,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:06,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:06,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2426 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 2230 trivial. 0 not checked. [2020-10-14 07:41:06,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714532019] [2020-10-14 07:41:06,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:41:06,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 07:41:06,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566830144] [2020-10-14 07:41:06,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 07:41:06,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:41:06,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 07:41:06,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-14 07:41:06,199 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand 18 states. [2020-10-14 07:41:06,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:41:06,357 INFO L93 Difference]: Finished difference Result 170 states and 178 transitions. [2020-10-14 07:41:06,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 07:41:06,358 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 170 [2020-10-14 07:41:06,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:41:06,359 INFO L225 Difference]: With dead ends: 170 [2020-10-14 07:41:06,359 INFO L226 Difference]: Without dead ends: 104 [2020-10-14 07:41:06,360 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 07:41:06,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-14 07:41:06,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-14 07:41:06,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-14 07:41:06,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2020-10-14 07:41:06,369 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 170 [2020-10-14 07:41:06,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:41:06,373 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2020-10-14 07:41:06,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 07:41:06,373 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2020-10-14 07:41:06,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-14 07:41:06,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:41:06,374 INFO L422 BasicCegarLoop]: trace histogram [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 07:41:06,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 07:41:06,374 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:41:06,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:41:06,375 INFO L82 PathProgramCache]: Analyzing trace with hash 945772055, now seen corresponding path program 38 times [2020-10-14 07:41:06,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:41:06,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916696258] [2020-10-14 07:41:06,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:41:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:06,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:06,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:06,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:07,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:11,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:11,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-14 07:41:11,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:41:11,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-14 07:41:11,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:11,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:11,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 07:41:11,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-14 07:41:11,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 07:41:11,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:11,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:41:11,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:11,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:11,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:11,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:41:11,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:11,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:41:11,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:11,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:11,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:11,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:11,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:11,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:41:11,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 07:41:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:11,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:11,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:11,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:11,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:41:11,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:11,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-14 07:41:11,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:11,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:11,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:11,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:11,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:11,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:11,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 07:41:11,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:11,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:11,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:11,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:11,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:41:11,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:11,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-14 07:41:11,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:11,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:11,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:11,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:11,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:11,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:11,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-14 07:41:11,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:11,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:11,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:11,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:11,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:41:11,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:11,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 07:41:11,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:11,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:11,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:11,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 07:41:11,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:11,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:11,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2455 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 2355 trivial. 0 not checked. [2020-10-14 07:41:11,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [916696258] [2020-10-14 07:41:11,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:41:11,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 07:41:11,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753363918] [2020-10-14 07:41:11,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 07:41:11,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:41:11,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 07:41:11,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-14 07:41:11,994 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand 14 states. [2020-10-14 07:41:12,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:41:12,137 INFO L93 Difference]: Finished difference Result 147 states and 152 transitions. [2020-10-14 07:41:12,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 07:41:12,137 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 172 [2020-10-14 07:41:12,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:41:12,139 INFO L225 Difference]: With dead ends: 147 [2020-10-14 07:41:12,139 INFO L226 Difference]: Without dead ends: 106 [2020-10-14 07:41:12,140 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 07:41:12,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-14 07:41:12,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-14 07:41:12,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-14 07:41:12,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2020-10-14 07:41:12,146 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 172 [2020-10-14 07:41:12,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:41:12,146 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2020-10-14 07:41:12,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 07:41:12,146 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2020-10-14 07:41:12,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-14 07:41:12,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:41:12,147 INFO L422 BasicCegarLoop]: trace histogram [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 07:41:12,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 07:41:12,148 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:41:12,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:41:12,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1383623317, now seen corresponding path program 39 times [2020-10-14 07:41:12,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:41:12,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523302791] [2020-10-14 07:41:12,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:41:12,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:12,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:12,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:12,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:13,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:17,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:17,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-14 07:41:17,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:41:17,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5090 [2020-10-14 07:41:17,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:17,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:17,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 07:41:17,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 07:41:17,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 07:41:17,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:17,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:41:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:17,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:17,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:17,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:41:17,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:17,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:41:17,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:17,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:17,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:17,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:17,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:17,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:17,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 07:41:17,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:17,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:17,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:17,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:17,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:41:17,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:17,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 07:41:17,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:17,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:17,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:17,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:17,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:17,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:17,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-14 07:41:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:17,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:17,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:17,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:41:17,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:17,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 07:41:17,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:17,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:17,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 07:41:17,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:41:17,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 07:41:17,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:17,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-14 07:41:17,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:17,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:17,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:17,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:17,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 07:41:17,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:17,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 07:41:17,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:17,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:17,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:17,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 07:41:17,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:17,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:17,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2476 backedges. 484 proven. 709 refuted. 0 times theorem prover too weak. 1283 trivial. 0 not checked. [2020-10-14 07:41:17,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523302791] [2020-10-14 07:41:17,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:41:17,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 07:41:17,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824080829] [2020-10-14 07:41:17,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 07:41:17,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:41:17,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 07:41:17,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-14 07:41:17,874 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand 19 states. [2020-10-14 07:41:18,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:41:18,295 INFO L93 Difference]: Finished difference Result 175 states and 185 transitions. [2020-10-14 07:41:18,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 07:41:18,296 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 174 [2020-10-14 07:41:18,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:41:18,297 INFO L225 Difference]: With dead ends: 175 [2020-10-14 07:41:18,298 INFO L226 Difference]: Without dead ends: 108 [2020-10-14 07:41:18,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 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 07:41:18,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-14 07:41:18,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-10-14 07:41:18,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-14 07:41:18,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-10-14 07:41:18,305 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 174 [2020-10-14 07:41:18,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:41:18,305 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-10-14 07:41:18,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 07:41:18,305 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-10-14 07:41:18,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-14 07:41:18,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:41:18,307 INFO L422 BasicCegarLoop]: trace histogram [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 07:41:18,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 07:41:18,307 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:41:18,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:41:18,307 INFO L82 PathProgramCache]: Analyzing trace with hash -39361645, now seen corresponding path program 40 times [2020-10-14 07:41:18,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:41:18,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1298950548] [2020-10-14 07:41:18,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:41:18,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:18,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:18,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:18,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:19,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:23,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:23,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-14 07:41:23,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:41:23,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-14 07:41:23,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:23,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:23,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 07:41:23,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 07:41:23,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 07:41:23,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:23,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:41:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:23,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:23,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:23,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:41:23,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:23,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:41:23,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:23,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:23,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:23,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:23,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:23,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:23,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 07:41:23,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:23,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:23,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:23,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 07:41:23,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:23,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 07:41:23,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:23,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:23,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 07:41:23,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 07:41:23,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 07:41:23,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:23,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-14 07:41:23,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:23,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:23,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:23,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:23,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 07:41:23,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:23,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 07:41:23,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:23,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:23,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:23,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 07:41:23,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:23,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:23,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 07:41:23,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:23,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:23,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:23,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:23,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 07:41:23,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:23,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-14 07:41:23,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:23,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:23,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:23,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 07:41:23,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:23,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:24,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2761 backedges. 0 proven. 1352 refuted. 0 times theorem prover too weak. 1409 trivial. 0 not checked. [2020-10-14 07:41:24,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1298950548] [2020-10-14 07:41:24,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:41:24,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 07:41:24,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47422497] [2020-10-14 07:41:24,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 07:41:24,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:41:24,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 07:41:24,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-14 07:41:24,001 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 20 states. [2020-10-14 07:41:24,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:41:24,472 INFO L93 Difference]: Finished difference Result 179 states and 189 transitions. [2020-10-14 07:41:24,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 07:41:24,472 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 180 [2020-10-14 07:41:24,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:41:24,474 INFO L225 Difference]: With dead ends: 179 [2020-10-14 07:41:24,474 INFO L226 Difference]: Without dead ends: 110 [2020-10-14 07:41:24,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 07:41:24,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-14 07:41:24,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2020-10-14 07:41:24,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-14 07:41:24,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2020-10-14 07:41:24,480 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 180 [2020-10-14 07:41:24,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:41:24,481 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2020-10-14 07:41:24,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 07:41:24,481 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2020-10-14 07:41:24,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-14 07:41:24,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:41:24,482 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 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 07:41:24,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-14 07:41:24,483 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:41:24,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:41:24,484 INFO L82 PathProgramCache]: Analyzing trace with hash -168696303, now seen corresponding path program 41 times [2020-10-14 07:41:24,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:41:24,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508994720] [2020-10-14 07:41:24,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:41:24,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:24,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:24,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:24,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:26,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:29,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:29,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-14 07:41:29,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 07:41:29,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 07:41:29,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:29,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:29,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 07:41:29,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 07:41:29,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 07:41:29,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:29,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:41:29,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:29,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:29,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:29,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 07:41:29,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:41:29,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:41:29,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:29,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:29,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:29,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:41:29,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:29,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:29,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 07:41:29,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:29,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:29,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:29,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:29,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 07:41:29,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:29,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-14 07:41:29,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:29,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:29,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:29,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 07:41:29,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:29,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:29,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 07:41:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:29,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:29,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:30,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:30,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 07:41:30,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:30,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-14 07:41:30,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:30,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:30,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:30,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 07:41:30,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:30,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:30,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-14 07:41:30,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:30,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:30,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:30,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:41:30,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 07:41:30,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:41:30,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-14 07:41:30,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:41:30,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:41:30,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:41:30,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 07:41:30,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:41:30,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 07:41:30,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3064 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 2839 trivial. 0 not checked. [2020-10-14 07:41:30,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1508994720] [2020-10-14 07:41:30,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 07:41:30,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 07:41:30,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515813440] [2020-10-14 07:41:30,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 07:41:30,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:41:30,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 07:41:30,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-14 07:41:30,269 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand 19 states. [2020-10-14 07:41:30,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:41:30,448 INFO L93 Difference]: Finished difference Result 184 states and 192 transitions. [2020-10-14 07:41:30,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 07:41:30,449 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 186 [2020-10-14 07:41:30,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:41:30,450 INFO L225 Difference]: With dead ends: 184 [2020-10-14 07:41:30,450 INFO L226 Difference]: Without dead ends: 112 [2020-10-14 07:41:30,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-14 07:41:30,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-14 07:41:30,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2020-10-14 07:41:30,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-14 07:41:30,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 115 transitions. [2020-10-14 07:41:30,456 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 115 transitions. Word has length 186 [2020-10-14 07:41:30,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:41:30,456 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 115 transitions. [2020-10-14 07:41:30,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 07:41:30,457 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 115 transitions. [2020-10-14 07:41:30,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-14 07:41:30,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:41:30,458 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 16, 16, 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 07:41:30,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-14 07:41:30,458 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:41:30,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:41:30,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1657713677, now seen corresponding path program 42 times [2020-10-14 07:41:30,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:41:30,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055770185] [2020-10-14 07:41:30,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:41:30,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:41:30,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:30,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:30,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:41:30,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking...