/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 SingleStatement --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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/EvenOdd01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:22:53,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:22:53,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:22:53,157 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:22:53,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:22:53,167 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:22:53,169 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:22:53,172 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:22:53,175 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:22:53,178 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:22:53,179 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:22:53,180 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:22:53,181 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:22:53,184 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:22:53,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:22:53,188 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:22:53,190 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:22:53,191 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:22:53,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:22:53,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:22:53,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:22:53,205 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:22:53,206 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:22:53,207 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:22:53,219 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:22:53,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:22:53,224 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:22:53,225 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:22:53,226 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:22:53,230 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:22:53,230 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:22:53,231 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:22:53,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:22:53,236 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:22:53,239 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:22:53,239 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:22:53,240 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:22:53,241 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:22:53,241 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:22:53,242 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:22:53,243 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:22:53,244 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 [2020-09-24 20:22:53,292 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:22:53,292 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:22:53,295 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:22:53,295 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:22:53,295 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:22:53,296 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:22:53,296 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:22:53,296 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:22:53,297 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:22:53,297 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:22:53,298 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:22:53,298 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:22:53,299 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:22:53,299 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:22:53,299 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:22:53,300 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:22:53,300 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:22:53,300 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:22:53,300 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:22:53,300 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:22:53,301 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:22:53,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:22:53,301 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:22:53,301 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:22:53,301 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:22:53,302 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:22:53,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:22:53,302 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:22:53,302 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:22:53,302 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 -> SingleStatement 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=BIGGEST;log-additional-information=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=BIGGEST;log-additional-information=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=BIGGEST;log-additional-information=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=BIGGEST;log-additional-information=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=BIGGEST;log-additional-information=true; [2020-09-24 20:22:53,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:22:53,788 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:22:53,793 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:22:53,795 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:22:53,796 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:22:53,797 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/EvenOdd01-1.c [2020-09-24 20:22:53,893 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba4c7b92a/884cbedfe0274dc9b001281708430ad6/FLAG12bd8b462 [2020-09-24 20:22:54,453 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:22:54,454 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/EvenOdd01-1.c [2020-09-24 20:22:54,464 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba4c7b92a/884cbedfe0274dc9b001281708430ad6/FLAG12bd8b462 [2020-09-24 20:22:54,814 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba4c7b92a/884cbedfe0274dc9b001281708430ad6 [2020-09-24 20:22:54,830 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:22:54,836 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:22:54,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:22:54,838 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:22:54,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:22:54,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:22:54" (1/1) ... [2020-09-24 20:22:54,848 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5955ed45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:54, skipping insertion in model container [2020-09-24 20:22:54,848 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:22:54" (1/1) ... [2020-09-24 20:22:54,858 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:22:54,883 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:22:55,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:22:55,112 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:22:55,130 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:22:55,146 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:22:55,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:55 WrapperNode [2020-09-24 20:22:55,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:22:55,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:22:55,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:22:55,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:22:55,162 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:55" (1/1) ... [2020-09-24 20:22:55,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:55" (1/1) ... [2020-09-24 20:22:55,247 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:55" (1/1) ... [2020-09-24 20:22:55,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:55" (1/1) ... [2020-09-24 20:22:55,252 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:55" (1/1) ... [2020-09-24 20:22:55,256 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:55" (1/1) ... [2020-09-24 20:22:55,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:55" (1/1) ... [2020-09-24 20:22:55,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:22:55,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:22:55,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:22:55,260 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:22:55,261 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:55" (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 [2020-09-24 20:22:55,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:22:55,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:22:55,348 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2020-09-24 20:22:55,348 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2020-09-24 20:22:55,348 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:22:55,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:22:55,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:22:55,349 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2020-09-24 20:22:55,350 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2020-09-24 20:22:55,351 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:22:55,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:22:55,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:22:55,601 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:22:55,602 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 20:22:55,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:22:55 BoogieIcfgContainer [2020-09-24 20:22:55,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:22:55,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:22:55,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:22:55,613 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:22:55,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:22:54" (1/3) ... [2020-09-24 20:22:55,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f16c501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:22:55, skipping insertion in model container [2020-09-24 20:22:55,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:55" (2/3) ... [2020-09-24 20:22:55,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f16c501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:22:55, skipping insertion in model container [2020-09-24 20:22:55,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:22:55" (3/3) ... [2020-09-24 20:22:55,624 INFO L109 eAbstractionObserver]: Analyzing ICFG EvenOdd01-1.c [2020-09-24 20:22:55,644 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:22:55,654 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:22:55,684 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:22:55,719 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:22:55,720 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:22:55,720 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:22:55,720 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:22:55,720 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:22:55,721 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:22:55,721 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:22:55,721 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:22:55,747 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-24 20:22:55,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-24 20:22:55,758 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:22:55,760 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:22:55,761 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:22:55,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:22:55,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1047957633, now seen corresponding path program 1 times [2020-09-24 20:22:55,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:22:55,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899697586] [2020-09-24 20:22:55,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:22:55,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:55,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:56,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:56,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 20:22:56,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:56,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-09-24 20:22:56,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:56,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:22:56,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:22:56,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 20:22:56,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:22:56,410 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 14 [2020-09-24 20:22:56,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:22:56,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:56,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:56,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:56,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:22:56,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:56,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:22:56,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:56,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:22:56,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:56,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:22:56,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:56,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 20:22:56,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:56,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:56,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:56,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:22:56,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:56,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 20:22:56,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:56,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:22:56,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:56,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:22:56,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:22:56,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:22:56,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899697586] [2020-09-24 20:22:56,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:22:56,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 20:22:56,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204505976] [2020-09-24 20:22:56,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:22:56,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:22:56,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:22:56,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:22:56,722 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 8 states. [2020-09-24 20:22:56,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:22:56,968 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2020-09-24 20:22:56,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 20:22:56,971 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-09-24 20:22:56,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:22:56,987 INFO L225 Difference]: With dead ends: 60 [2020-09-24 20:22:56,987 INFO L226 Difference]: Without dead ends: 40 [2020-09-24 20:22:56,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:22:57,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-24 20:22:57,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-24 20:22:57,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-24 20:22:57,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-09-24 20:22:57,060 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 20 [2020-09-24 20:22:57,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:22:57,061 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-09-24 20:22:57,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:22:57,061 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-09-24 20:22:57,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-24 20:22:57,064 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:22:57,064 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:22:57,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:22:57,079 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:22:57,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:22:57,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1743555941, now seen corresponding path program 1 times [2020-09-24 20:22:57,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:22:57,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428779257] [2020-09-24 20:22:57,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:22:57,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:57,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:57,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:57,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 20:22:57,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:57,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-09-24 20:22:57,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:57,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:22:57,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:22:57,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 20:22:57,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 20:22:57,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:22:57,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:57,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:57,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:57,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:22:57,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:57,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:22:57,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:57,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:22:57,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:57,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:22:57,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:57,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 20:22:57,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:57,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:57,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:57,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:22:57,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:57,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 20:22:57,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:57,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:22:57,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:57,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:22:57,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:22:57,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:22:57,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428779257] [2020-09-24 20:22:57,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:22:57,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 20:22:57,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703202924] [2020-09-24 20:22:57,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:22:57,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:22:57,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:22:57,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:22:57,767 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 8 states. [2020-09-24 20:22:57,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:22:57,941 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2020-09-24 20:22:57,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 20:22:57,941 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-09-24 20:22:57,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:22:57,943 INFO L225 Difference]: With dead ends: 49 [2020-09-24 20:22:57,943 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 20:22:57,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:22:57,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 20:22:57,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-09-24 20:22:57,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-24 20:22:57,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-09-24 20:22:57,962 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 21 [2020-09-24 20:22:57,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:22:57,963 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-09-24 20:22:57,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:22:57,963 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-09-24 20:22:57,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-24 20:22:57,967 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:22:57,967 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:22:57,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:22:57,968 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:22:57,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:22:57,968 INFO L82 PathProgramCache]: Analyzing trace with hash 698419476, now seen corresponding path program 1 times [2020-09-24 20:22:57,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:22:57,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52483137] [2020-09-24 20:22:57,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:22:57,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:58,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:58,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:58,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:58,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 20:22:58,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:22:58,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 389 [2020-09-24 20:22:58,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:58,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:22:58,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:22:58,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 20:22:58,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:22:58,532 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 15 [2020-09-24 20:22:58,688 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 15 [2020-09-24 20:22:58,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:22:58,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:58,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:58,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:58,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:22:58,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:58,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:22:58,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:58,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:22:58,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:58,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:22:58,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 20:22:58,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 20:22:58,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:58,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:58,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:58,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:58,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 20:22:58,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:22:58,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-24 20:22:58,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:58,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:22:58,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:58,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 20:22:58,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:58,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:22:58,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:58,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:58,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:58,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:22:58,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:58,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 20:22:58,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:58,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:22:58,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:58,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:22:58,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:58,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:22:58,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52483137] [2020-09-24 20:22:58,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:22:58,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 20:22:58,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529152475] [2020-09-24 20:22:58,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 20:22:58,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:22:59,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 20:22:59,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:22:59,001 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 11 states. [2020-09-24 20:22:59,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:22:59,318 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2020-09-24 20:22:59,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 20:22:59,319 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-09-24 20:22:59,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:22:59,321 INFO L225 Difference]: With dead ends: 54 [2020-09-24 20:22:59,322 INFO L226 Difference]: Without dead ends: 47 [2020-09-24 20:22:59,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-09-24 20:22:59,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-24 20:22:59,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-09-24 20:22:59,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-24 20:22:59,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-09-24 20:22:59,330 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 29 [2020-09-24 20:22:59,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:22:59,331 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-09-24 20:22:59,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 20:22:59,331 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-09-24 20:22:59,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 20:22:59,332 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:22:59,333 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:22:59,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:22:59,333 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:22:59,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:22:59,334 INFO L82 PathProgramCache]: Analyzing trace with hash 735393428, now seen corresponding path program 1 times [2020-09-24 20:22:59,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:22:59,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [141764539] [2020-09-24 20:22:59,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:22:59,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:59,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:59,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:59,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 20:22:59,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:59,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-09-24 20:22:59,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:59,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:22:59,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:22:59,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 20:22:59,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:22:59,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:22:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:59,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:59,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:59,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:22:59,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:59,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:22:59,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:59,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:22:59,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:59,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:22:59,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:22:59,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 20:22:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:59,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:59,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:59,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 20:22:59,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:59,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 20:22:59,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:59,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:22:59,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:59,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 20:22:59,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:22:59,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:22:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:59,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:59,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:59,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:22:59,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:59,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 20:22:59,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:59,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:22:59,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:59,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:22:59,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:22:59,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:22:59,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [141764539] [2020-09-24 20:22:59,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:22:59,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 20:22:59,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491359472] [2020-09-24 20:22:59,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 20:22:59,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:22:59,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 20:22:59,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:22:59,844 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 11 states. [2020-09-24 20:23:00,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:00,109 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2020-09-24 20:23:00,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 20:23:00,111 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-09-24 20:23:00,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:00,112 INFO L225 Difference]: With dead ends: 59 [2020-09-24 20:23:00,112 INFO L226 Difference]: Without dead ends: 52 [2020-09-24 20:23:00,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-09-24 20:23:00,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-24 20:23:00,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 45. [2020-09-24 20:23:00,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-24 20:23:00,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-09-24 20:23:00,132 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 30 [2020-09-24 20:23:00,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:00,134 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-09-24 20:23:00,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 20:23:00,135 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-09-24 20:23:00,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 20:23:00,136 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:00,136 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:00,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:23:00,139 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:00,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:00,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1128861445, now seen corresponding path program 1 times [2020-09-24 20:23:00,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:00,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105807567] [2020-09-24 20:23:00,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:00,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:00,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:00,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:00,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:00,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 20:23:00,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:00,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-09-24 20:23:00,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:00,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 20:23:00,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:23:00,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 20:23:00,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:00,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:00,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:00,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:00,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:00,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:00,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:00,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:00,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:00,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:00,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:00,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:00,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:00,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 20:23:00,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:00,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:00,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:00,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:00,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:23:00,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:00,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-24 20:23:00,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:00,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 20:23:00,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:00,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:23:00,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:00,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:00,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:00,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:00,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:00,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:00,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 20:23:00,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:00,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-24 20:23:00,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:00,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:23:00,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:00,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 20:23:00,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:00,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:00,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:00,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:00,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:00,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:00,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:00,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 20:23:00,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:00,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:00,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:00,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:00,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:00,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 20:23:00,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105807567] [2020-09-24 20:23:00,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:00,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 20:23:00,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451005313] [2020-09-24 20:23:00,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 20:23:00,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:00,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 20:23:00,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-24 20:23:00,897 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 13 states. [2020-09-24 20:23:01,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:01,280 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2020-09-24 20:23:01,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 20:23:01,281 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2020-09-24 20:23:01,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:01,282 INFO L225 Difference]: With dead ends: 64 [2020-09-24 20:23:01,283 INFO L226 Difference]: Without dead ends: 57 [2020-09-24 20:23:01,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2020-09-24 20:23:01,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-24 20:23:01,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2020-09-24 20:23:01,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-24 20:23:01,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-09-24 20:23:01,291 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 38 [2020-09-24 20:23:01,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:01,291 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-09-24 20:23:01,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 20:23:01,292 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-09-24 20:23:01,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-24 20:23:01,293 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:01,293 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:01,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:23:01,294 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:01,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:01,294 INFO L82 PathProgramCache]: Analyzing trace with hash -211667235, now seen corresponding path program 1 times [2020-09-24 20:23:01,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:01,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698567939] [2020-09-24 20:23:01,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:01,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:01,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:01,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:01,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 20:23:01,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:01,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-09-24 20:23:01,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:01,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 20:23:01,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:23:01,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 20:23:01,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:01,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:01,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:01,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:01,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:01,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:01,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:01,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:01,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:01,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:01,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:01,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:01,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:01,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 20:23:01,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:01,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:01,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:01,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 20:23:01,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:01,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-24 20:23:01,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:01,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 20:23:01,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:01,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 20:23:01,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:01,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:01,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:01,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:01,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:01,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 20:23:01,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:01,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 20:23:01,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:01,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:23:01,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:01,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 20:23:01,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:02,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:02,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:02,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:02,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:02,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:02,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:02,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 20:23:02,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:02,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:02,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:02,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:02,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:02,089 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 20:23:02,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698567939] [2020-09-24 20:23:02,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:02,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 20:23:02,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206903185] [2020-09-24 20:23:02,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 20:23:02,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:02,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 20:23:02,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-09-24 20:23:02,095 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 13 states. [2020-09-24 20:23:02,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:02,582 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2020-09-24 20:23:02,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 20:23:02,586 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 39 [2020-09-24 20:23:02,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:02,587 INFO L225 Difference]: With dead ends: 69 [2020-09-24 20:23:02,587 INFO L226 Difference]: Without dead ends: 62 [2020-09-24 20:23:02,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2020-09-24 20:23:02,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-24 20:23:02,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 50. [2020-09-24 20:23:02,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-24 20:23:02,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-09-24 20:23:02,596 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 39 [2020-09-24 20:23:02,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:02,597 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-09-24 20:23:02,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 20:23:02,597 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-09-24 20:23:02,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 20:23:02,598 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:02,599 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:02,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:23:02,599 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:02,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:02,599 INFO L82 PathProgramCache]: Analyzing trace with hash 320612812, now seen corresponding path program 1 times [2020-09-24 20:23:02,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:02,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745706817] [2020-09-24 20:23:02,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:02,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:02,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:03,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-24 20:23:03,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:03,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 457 [2020-09-24 20:23:03,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:03,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 20:23:03,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:23:03,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-24 20:23:03,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:03,217 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 13 [2020-09-24 20:23:03,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:03,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:03,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:03,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:03,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:03,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:03,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:03,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:03,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:03,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:03,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 20:23:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:03,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:03,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 20:23:03,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:03,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-24 20:23:03,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:03,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 20:23:03,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:03,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 20:23:03,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:03,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:03,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:03,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:03,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:23:03,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:03,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-24 20:23:03,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:03,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:23:03,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:03,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:23:03,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:03,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:03,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:03,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 20:23:03,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:03,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 20:23:03,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:03,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:23:03,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:03,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 20:23:03,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:03,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:03,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:03,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:03,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:03,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:03,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:23:03,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:03,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:03,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:03,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:03,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:03,816 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 20:23:03,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745706817] [2020-09-24 20:23:03,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:03,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 20:23:03,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560127246] [2020-09-24 20:23:03,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 20:23:03,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:03,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 20:23:03,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-09-24 20:23:03,820 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 15 states. [2020-09-24 20:23:04,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:04,389 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2020-09-24 20:23:04,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 20:23:04,389 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 47 [2020-09-24 20:23:04,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:04,392 INFO L225 Difference]: With dead ends: 74 [2020-09-24 20:23:04,392 INFO L226 Difference]: Without dead ends: 67 [2020-09-24 20:23:04,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2020-09-24 20:23:04,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-09-24 20:23:04,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 55. [2020-09-24 20:23:04,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-24 20:23:04,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-09-24 20:23:04,406 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 47 [2020-09-24 20:23:04,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:04,410 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-09-24 20:23:04,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 20:23:04,410 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-09-24 20:23:04,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 20:23:04,411 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:04,411 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:04,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 20:23:04,412 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:04,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:04,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1757163992, now seen corresponding path program 1 times [2020-09-24 20:23:04,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:04,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803910328] [2020-09-24 20:23:04,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:04,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:04,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:04,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 20:23:04,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:04,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 423 [2020-09-24 20:23:04,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:04,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 20:23:04,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:23:04,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 20:23:04,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:04,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:04,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:04,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:04,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:04,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:04,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:04,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:04,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:04,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:04,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:04,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:05,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 20:23:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:05,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:05,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:05,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 20:23:05,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:05,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-24 20:23:05,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:05,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 20:23:05,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:05,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:23:05,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:05,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:05,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:05,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:05,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:05,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 20:23:05,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:05,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-24 20:23:05,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:05,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:23:05,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:05,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 20:23:05,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:05,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:05,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:05,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:05,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:05,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 20:23:05,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:05,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 20:23:05,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:05,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:23:05,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:05,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 20:23:05,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:05,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:05,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:05,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:05,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:05,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:05,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:05,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 20:23:05,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:05,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:05,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:05,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:05,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:05,427 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 20:23:05,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803910328] [2020-09-24 20:23:05,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:05,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 20:23:05,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458385273] [2020-09-24 20:23:05,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 20:23:05,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:05,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 20:23:05,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-09-24 20:23:05,432 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 15 states. [2020-09-24 20:23:06,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:06,079 INFO L93 Difference]: Finished difference Result 79 states and 83 transitions. [2020-09-24 20:23:06,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 20:23:06,079 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 48 [2020-09-24 20:23:06,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:06,084 INFO L225 Difference]: With dead ends: 79 [2020-09-24 20:23:06,084 INFO L226 Difference]: Without dead ends: 72 [2020-09-24 20:23:06,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2020-09-24 20:23:06,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-24 20:23:06,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 55. [2020-09-24 20:23:06,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-24 20:23:06,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-09-24 20:23:06,092 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 48 [2020-09-24 20:23:06,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:06,092 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-09-24 20:23:06,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 20:23:06,093 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-09-24 20:23:06,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-24 20:23:06,095 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:06,095 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:06,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 20:23:06,095 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:06,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:06,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1185852169, now seen corresponding path program 2 times [2020-09-24 20:23:06,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:06,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212686856] [2020-09-24 20:23:06,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:06,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:06,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:06,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:06,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-24 20:23:06,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:06,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 520 [2020-09-24 20:23:06,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:06,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 20:23:06,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:23:06,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 20:23:06,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:06,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:06,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:06,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:06,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:06,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:06,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:06,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:06,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:06,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:06,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:06,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:06,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:06,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 20:23:06,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:06,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:06,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:06,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:06,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:23:06,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:06,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-24 20:23:06,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:06,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 20:23:06,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:06,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 20:23:06,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:07,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:07,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:07,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:07,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:07,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:07,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 20:23:07,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:07,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-24 20:23:07,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:07,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:23:07,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:07,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 20:23:07,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:07,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:07,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:07,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:07,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:07,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:07,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:23:07,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:07,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-24 20:23:07,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:07,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:23:07,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:07,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:23:07,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:07,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:07,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:07,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:07,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:07,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:07,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 20:23:07,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:07,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 20:23:07,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:07,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:23:07,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:07,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 20:23:07,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:07,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:07,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:07,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:07,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:07,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:07,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:07,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:23:07,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:07,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:07,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:07,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:07,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:07,541 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-24 20:23:07,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212686856] [2020-09-24 20:23:07,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:07,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 20:23:07,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235852220] [2020-09-24 20:23:07,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 20:23:07,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:07,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 20:23:07,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-09-24 20:23:07,545 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 17 states. [2020-09-24 20:23:08,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:08,269 INFO L93 Difference]: Finished difference Result 84 states and 88 transitions. [2020-09-24 20:23:08,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 20:23:08,270 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 56 [2020-09-24 20:23:08,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:08,272 INFO L225 Difference]: With dead ends: 84 [2020-09-24 20:23:08,272 INFO L226 Difference]: Without dead ends: 77 [2020-09-24 20:23:08,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=110, Invalid=946, Unknown=0, NotChecked=0, Total=1056 [2020-09-24 20:23:08,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-24 20:23:08,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 60. [2020-09-24 20:23:08,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-24 20:23:08,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-09-24 20:23:08,283 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 56 [2020-09-24 20:23:08,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:08,283 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-09-24 20:23:08,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 20:23:08,284 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-09-24 20:23:08,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-24 20:23:08,285 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:08,285 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:08,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 20:23:08,287 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:08,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:08,288 INFO L82 PathProgramCache]: Analyzing trace with hash 338577365, now seen corresponding path program 2 times [2020-09-24 20:23:08,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:08,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131708201] [2020-09-24 20:23:08,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:08,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:08,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:08,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:08,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 20:23:08,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:08,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 568 [2020-09-24 20:23:08,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:08,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 20:23:08,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:23:08,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-24 20:23:08,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:08,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:08,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:08,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:08,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:08,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:08,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:08,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:08,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:08,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:08,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:09,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:09,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:09,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 20:23:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:09,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:09,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:09,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 20:23:09,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:09,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-24 20:23:09,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:09,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 20:23:09,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:09,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 20:23:09,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:09,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:09,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:09,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:09,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:09,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 20:23:09,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:09,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-24 20:23:09,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:09,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:23:09,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:09,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:23:09,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:09,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:09,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:09,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:09,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 20:23:09,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:09,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-24 20:23:09,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:09,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:23:09,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:09,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 20:23:09,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:09,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:09,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:09,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:09,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:09,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 20:23:09,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:09,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 20:23:09,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:09,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:23:09,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:09,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 20:23:09,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:09,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:09,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:09,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:09,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:09,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:09,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:09,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:23:09,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:09,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:09,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:09,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:09,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:09,653 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-24 20:23:09,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131708201] [2020-09-24 20:23:09,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:09,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 20:23:09,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619517124] [2020-09-24 20:23:09,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 20:23:09,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:09,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 20:23:09,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-09-24 20:23:09,656 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 17 states. [2020-09-24 20:23:10,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:10,484 INFO L93 Difference]: Finished difference Result 89 states and 93 transitions. [2020-09-24 20:23:10,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 20:23:10,484 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 57 [2020-09-24 20:23:10,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:10,489 INFO L225 Difference]: With dead ends: 89 [2020-09-24 20:23:10,489 INFO L226 Difference]: Without dead ends: 82 [2020-09-24 20:23:10,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=110, Invalid=946, Unknown=0, NotChecked=0, Total=1056 [2020-09-24 20:23:10,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-24 20:23:10,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 60. [2020-09-24 20:23:10,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-24 20:23:10,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-09-24 20:23:10,497 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 57 [2020-09-24 20:23:10,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:10,498 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-09-24 20:23:10,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 20:23:10,498 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-09-24 20:23:10,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-24 20:23:10,499 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:10,499 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:10,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 20:23:10,500 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:10,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:10,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1560027652, now seen corresponding path program 2 times [2020-09-24 20:23:10,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:10,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857974229] [2020-09-24 20:23:10,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:10,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:10,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:11,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:11,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-24 20:23:11,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:11,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 708 [2020-09-24 20:23:11,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:11,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-24 20:23:11,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:23:11,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 20:23:11,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:11,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:11,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:11,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:11,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:11,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:11,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:11,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:11,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:11,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:11,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:11,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:11,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:11,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 20:23:11,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:11,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:11,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:11,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:11,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-24 20:23:11,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:11,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-24 20:23:11,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:11,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-24 20:23:11,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:11,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-24 20:23:11,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:11,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:11,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:11,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:11,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:11,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:11,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:23:11,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:11,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-24 20:23:11,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:11,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 20:23:11,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:11,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 20:23:11,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:11,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:11,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:11,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:11,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:11,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:11,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 20:23:11,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:11,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-24 20:23:11,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:11,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:23:11,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:11,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 20:23:11,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:11,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:11,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:11,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:11,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:12,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:12,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:23:12,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:12,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-24 20:23:12,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:12,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:23:12,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:12,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:23:12,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:12,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:12,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:12,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:12,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:12,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:12,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 20:23:12,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:12,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 20:23:12,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:12,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:23:12,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:12,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 20:23:12,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:12,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:12,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:12,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:12,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:12,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:12,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:23:12,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:12,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:12,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:12,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:12,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:12,319 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-24 20:23:12,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857974229] [2020-09-24 20:23:12,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:12,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 20:23:12,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623401058] [2020-09-24 20:23:12,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 20:23:12,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:12,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 20:23:12,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2020-09-24 20:23:12,322 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 19 states. [2020-09-24 20:23:13,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:13,334 INFO L93 Difference]: Finished difference Result 94 states and 98 transitions. [2020-09-24 20:23:13,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-24 20:23:13,334 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 65 [2020-09-24 20:23:13,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:13,336 INFO L225 Difference]: With dead ends: 94 [2020-09-24 20:23:13,336 INFO L226 Difference]: Without dead ends: 87 [2020-09-24 20:23:13,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=129, Invalid=1277, Unknown=0, NotChecked=0, Total=1406 [2020-09-24 20:23:13,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-24 20:23:13,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 65. [2020-09-24 20:23:13,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-24 20:23:13,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-09-24 20:23:13,354 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 65 [2020-09-24 20:23:13,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:13,355 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-09-24 20:23:13,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 20:23:13,355 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-09-24 20:23:13,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-24 20:23:13,357 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:13,357 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:13,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 20:23:13,358 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:13,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:13,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1346648732, now seen corresponding path program 2 times [2020-09-24 20:23:13,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:13,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862053614] [2020-09-24 20:23:13,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:13,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:13,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:14,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:14,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 20:23:14,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:14,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 696 [2020-09-24 20:23:14,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:14,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-24 20:23:14,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:23:14,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 20:23:14,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:14,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:14,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:14,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:14,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:14,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:14,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:14,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:14,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:14,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:14,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:14,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:14,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 20:23:14,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:14,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:14,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:14,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 20:23:14,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:14,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-09-24 20:23:14,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:14,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-24 20:23:14,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:14,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 20:23:14,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:14,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:14,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:14,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:14,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 20:23:14,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:14,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-24 20:23:14,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:14,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 20:23:14,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:14,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 20:23:14,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:14,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:14,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:14,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:14,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:14,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 20:23:14,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:14,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-24 20:23:14,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:14,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:23:14,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:14,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:23:14,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:14,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:14,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:14,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:14,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:14,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 20:23:14,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:14,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 20:23:14,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:14,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:23:14,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:14,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 20:23:14,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:14,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:14,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:14,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:14,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:14,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 20:23:14,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:14,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 20:23:14,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:14,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:23:14,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:14,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 20:23:14,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:15,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:15,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:15,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:15,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:15,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:15,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:15,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 20:23:15,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:15,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:15,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:15,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:15,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:15,200 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-24 20:23:15,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862053614] [2020-09-24 20:23:15,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:15,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 20:23:15,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211969375] [2020-09-24 20:23:15,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 20:23:15,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:15,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 20:23:15,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2020-09-24 20:23:15,204 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 19 states. [2020-09-24 20:23:16,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:16,170 INFO L93 Difference]: Finished difference Result 99 states and 103 transitions. [2020-09-24 20:23:16,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-24 20:23:16,171 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 66 [2020-09-24 20:23:16,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:16,172 INFO L225 Difference]: With dead ends: 99 [2020-09-24 20:23:16,172 INFO L226 Difference]: Without dead ends: 92 [2020-09-24 20:23:16,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=129, Invalid=1277, Unknown=0, NotChecked=0, Total=1406 [2020-09-24 20:23:16,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-24 20:23:16,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 65. [2020-09-24 20:23:16,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-24 20:23:16,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-09-24 20:23:16,180 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 66 [2020-09-24 20:23:16,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:16,180 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-09-24 20:23:16,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 20:23:16,181 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-09-24 20:23:16,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-24 20:23:16,182 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:16,182 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:16,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 20:23:16,182 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:16,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:16,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1992760179, now seen corresponding path program 3 times [2020-09-24 20:23:16,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:16,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [931578885] [2020-09-24 20:23:16,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:16,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:16,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:16,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:16,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:16,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-24 20:23:17,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:17,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 803 [2020-09-24 20:23:17,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:17,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-24 20:23:17,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:23:17,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 20:23:17,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:17,176 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 16 [2020-09-24 20:23:17,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:17,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:17,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:17,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:17,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:17,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:17,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:17,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:17,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:17,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:17,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:17,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:17,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 20:23:17,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:17,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:17,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:17,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:17,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 20:23:17,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:17,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-09-24 20:23:17,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:17,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-24 20:23:17,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:17,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 20:23:17,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:17,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:17,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:17,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:17,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:17,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:17,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-24 20:23:17,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:17,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-09-24 20:23:17,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:17,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 20:23:17,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:17,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-24 20:23:17,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:17,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:17,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:17,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:17,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:17,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:17,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:23:17,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:17,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-24 20:23:17,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:17,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 20:23:17,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:17,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 20:23:17,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:18,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:18,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:18,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:18,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:18,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:18,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 20:23:18,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:18,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-24 20:23:18,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:18,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:23:18,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:18,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 20:23:18,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:18,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:18,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:18,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:18,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:18,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:18,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:23:18,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:18,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-24 20:23:18,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:18,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:23:18,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:18,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:23:18,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:18,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:18,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:18,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:18,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:18,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 20:23:18,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:18,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 20:23:18,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:18,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:23:18,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:18,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 20:23:18,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:18,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:18,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:18,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:18,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:18,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:18,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 20:23:18,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:18,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:18,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:18,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:18,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:18,600 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-24 20:23:18,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [931578885] [2020-09-24 20:23:18,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:18,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-24 20:23:18,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295851606] [2020-09-24 20:23:18,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-24 20:23:18,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:18,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-24 20:23:18,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2020-09-24 20:23:18,604 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 21 states. [2020-09-24 20:23:19,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:19,844 INFO L93 Difference]: Finished difference Result 104 states and 108 transitions. [2020-09-24 20:23:19,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-24 20:23:19,845 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 74 [2020-09-24 20:23:19,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:19,846 INFO L225 Difference]: With dead ends: 104 [2020-09-24 20:23:19,846 INFO L226 Difference]: Without dead ends: 97 [2020-09-24 20:23:19,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=148, Invalid=1658, Unknown=0, NotChecked=0, Total=1806 [2020-09-24 20:23:19,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-09-24 20:23:19,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 70. [2020-09-24 20:23:19,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-24 20:23:19,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-09-24 20:23:19,854 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 74 [2020-09-24 20:23:19,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:19,855 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-09-24 20:23:19,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-24 20:23:19,855 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-09-24 20:23:19,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-24 20:23:19,856 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:19,856 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:19,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 20:23:19,857 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:19,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:19,857 INFO L82 PathProgramCache]: Analyzing trace with hash -2107047859, now seen corresponding path program 3 times [2020-09-24 20:23:19,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:19,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331736029] [2020-09-24 20:23:19,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:19,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:20,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:20,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-24 20:23:20,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:20,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 886 [2020-09-24 20:23:20,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:20,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-24 20:23:20,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:23:20,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 20:23:20,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:20,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:20,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:20,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:20,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:20,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:20,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:23:20,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:20,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:20,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:20,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:20,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:20,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 20:23:20,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:20,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:21,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:21,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 20:23:21,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:21,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-09-24 20:23:21,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:21,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-24 20:23:21,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:21,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 20:23:21,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:21,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:21,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:21,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:21,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:21,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 20:23:21,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:21,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-24 20:23:21,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:21,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 20:23:21,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:21,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 20:23:21,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:21,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:21,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:21,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:21,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:21,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 20:23:21,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:21,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-24 20:23:21,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:21,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 20:23:21,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:21,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 20:23:21,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:21,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:21,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:21,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:21,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:21,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 20:23:21,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:21,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-24 20:23:21,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:21,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:23:21,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:21,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:23:21,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:21,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:21,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:21,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:21,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 20:23:21,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:21,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 20:23:21,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:21,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:23:21,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:21,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 20:23:21,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:21,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:21,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:21,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:21,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:21,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 20:23:21,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:21,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 20:23:21,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:21,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:23:21,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:21,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 20:23:21,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:22,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:22,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:22,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:22,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:22,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:22,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:22,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:23:22,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:22,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:22,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:22,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:22,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:22,173 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-24 20:23:22,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331736029] [2020-09-24 20:23:22,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:22,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-24 20:23:22,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927884802] [2020-09-24 20:23:22,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-24 20:23:22,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:22,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-24 20:23:22,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2020-09-24 20:23:22,176 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 22 states. [2020-09-24 20:23:23,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:23,374 INFO L93 Difference]: Finished difference Result 109 states and 113 transitions. [2020-09-24 20:23:23,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-24 20:23:23,374 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 75 [2020-09-24 20:23:23,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:23,375 INFO L225 Difference]: With dead ends: 109 [2020-09-24 20:23:23,376 INFO L226 Difference]: Without dead ends: 102 [2020-09-24 20:23:23,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=162, Invalid=1730, Unknown=0, NotChecked=0, Total=1892 [2020-09-24 20:23:23,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-24 20:23:23,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 70. [2020-09-24 20:23:23,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-24 20:23:23,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-09-24 20:23:23,384 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 75 [2020-09-24 20:23:23,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:23,384 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-09-24 20:23:23,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-24 20:23:23,384 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-09-24 20:23:23,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-24 20:23:23,386 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:23,386 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:23,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 20:23:23,386 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:23,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:23,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1771228740, now seen corresponding path program 3 times [2020-09-24 20:23:23,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:23,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074318328] [2020-09-24 20:23:23,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:23,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:23,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:23,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:24,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:24,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-24 20:23:24,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:24,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1083 [2020-09-24 20:23:24,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:24,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-09-24 20:23:24,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:23:24,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-24 20:23:24,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:24,617 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 17 [2020-09-24 20:23:24,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:24,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:24,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:24,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:24,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:24,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:24,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:23:24,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:24,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:24,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:24,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:24,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:24,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 20:23:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:24,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:24,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:24,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:24,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 20:23:24,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:24,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-09-24 20:23:24,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:24,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-09-24 20:23:24,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:24,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-24 20:23:24,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:25,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:25,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:25,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:25,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:25,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:25,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 20:23:25,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:25,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-09-24 20:23:25,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:25,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-24 20:23:25,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:25,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 20:23:25,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:25,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:25,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:25,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:25,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:25,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:25,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-24 20:23:25,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:25,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-09-24 20:23:25,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:25,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 20:23:25,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:25,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-24 20:23:25,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:25,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:25,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:25,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:25,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:25,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:25,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:23:25,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:25,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-24 20:23:25,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:25,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 20:23:25,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:25,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 20:23:25,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:25,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:25,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:25,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:25,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:25,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:25,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 20:23:25,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:25,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-24 20:23:25,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:25,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:23:25,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:25,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 20:23:25,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:26,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:26,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:26,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:26,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:26,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:26,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:23:26,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:26,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-24 20:23:26,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:26,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:23:26,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:26,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:23:26,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:26,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:26,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:26,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:26,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:26,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:26,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 20:23:26,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:26,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 20:23:26,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:26,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:23:26,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:26,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 20:23:26,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:26,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:26,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:26,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:26,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:26,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:26,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:26,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:23:26,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:26,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:26,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:26,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:26,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:26,484 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-09-24 20:23:26,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074318328] [2020-09-24 20:23:26,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:26,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-24 20:23:26,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629147331] [2020-09-24 20:23:26,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-24 20:23:26,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:26,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-24 20:23:26,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=462, Unknown=0, NotChecked=0, Total=506 [2020-09-24 20:23:26,486 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 23 states. [2020-09-24 20:23:27,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:27,923 INFO L93 Difference]: Finished difference Result 114 states and 118 transitions. [2020-09-24 20:23:27,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-24 20:23:27,923 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 83 [2020-09-24 20:23:27,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:27,925 INFO L225 Difference]: With dead ends: 114 [2020-09-24 20:23:27,925 INFO L226 Difference]: Without dead ends: 107 [2020-09-24 20:23:27,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 13 SyntacticMatches, 5 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=167, Invalid=2089, Unknown=0, NotChecked=0, Total=2256 [2020-09-24 20:23:27,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-09-24 20:23:27,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 75. [2020-09-24 20:23:27,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-24 20:23:27,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-09-24 20:23:27,931 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 83 [2020-09-24 20:23:27,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:27,932 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-09-24 20:23:27,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-24 20:23:27,932 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-09-24 20:23:27,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-24 20:23:27,933 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:27,933 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-09-24 20:23:27,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-24 20:23:27,934 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:27,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:27,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1688547104, now seen corresponding path program 3 times [2020-09-24 20:23:27,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:27,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534849262] [2020-09-24 20:23:27,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:27,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:27,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:28,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:28,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-24 20:23:28,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:28,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 969 [2020-09-24 20:23:28,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:28,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-09-24 20:23:28,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:23:28,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-09-24 20:23:28,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:29,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:29,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:29,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:29,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:29,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:29,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:29,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:29,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:29,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:29,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:29,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:29,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:29,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 20:23:29,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:29,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:29,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:29,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-24 20:23:29,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:29,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-09-24 20:23:29,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:29,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-09-24 20:23:29,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:29,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 20:23:29,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:29,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:29,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:29,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:29,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 20:23:29,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:29,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-09-24 20:23:29,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:29,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-24 20:23:29,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:29,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 20:23:29,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:29,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:29,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:29,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:29,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:29,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 20:23:29,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:29,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-24 20:23:29,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:29,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 20:23:29,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:29,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 20:23:29,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:29,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:29,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:29,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:29,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 20:23:29,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:29,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-24 20:23:29,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:29,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 20:23:29,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:29,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 20:23:29,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:29,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:29,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:29,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:30,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:30,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 20:23:30,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:30,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-24 20:23:30,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:30,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:23:30,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:30,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:23:30,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:30,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:30,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:30,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:30,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:30,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 20:23:30,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:30,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 20:23:30,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:30,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:23:30,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:30,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 20:23:30,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:30,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:30,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:30,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:30,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 20:23:30,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:30,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 20:23:30,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:30,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:23:30,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:30,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 20:23:30,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:30,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:30,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:30,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:30,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:30,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:30,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:30,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 20:23:30,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:30,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:30,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:30,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:30,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:30,592 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-24 20:23:30,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1534849262] [2020-09-24 20:23:30,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:30,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-09-24 20:23:30,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048018830] [2020-09-24 20:23:30,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-09-24 20:23:30,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:30,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-09-24 20:23:30,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=503, Unknown=0, NotChecked=0, Total=552 [2020-09-24 20:23:30,601 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 24 states. [2020-09-24 20:23:32,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:32,119 INFO L93 Difference]: Finished difference Result 119 states and 123 transitions. [2020-09-24 20:23:32,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-24 20:23:32,119 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 84 [2020-09-24 20:23:32,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:32,121 INFO L225 Difference]: With dead ends: 119 [2020-09-24 20:23:32,121 INFO L226 Difference]: Without dead ends: 112 [2020-09-24 20:23:32,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=184, Invalid=2168, Unknown=0, NotChecked=0, Total=2352 [2020-09-24 20:23:32,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-24 20:23:32,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 75. [2020-09-24 20:23:32,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-24 20:23:32,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-09-24 20:23:32,128 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 84 [2020-09-24 20:23:32,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:32,128 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-09-24 20:23:32,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-09-24 20:23:32,128 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-09-24 20:23:32,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-09-24 20:23:32,129 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:32,129 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:32,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-24 20:23:32,130 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:32,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:32,130 INFO L82 PathProgramCache]: Analyzing trace with hash -901694575, now seen corresponding path program 4 times [2020-09-24 20:23:32,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:32,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [113614563] [2020-09-24 20:23:32,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:32,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:32,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:32,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:33,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:33,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-24 20:23:33,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:33,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1235 [2020-09-24 20:23:33,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:33,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-09-24 20:23:33,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:23:33,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-24 20:23:33,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:33,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:33,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:33,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:33,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:33,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:33,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:33,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:33,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:33,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:33,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:33,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:33,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:33,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 20:23:33,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:33,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:33,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:33,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:33,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-09-24 20:23:33,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:33,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 387 [2020-09-24 20:23:33,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:33,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-09-24 20:23:33,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:33,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 20:23:33,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:33,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:34,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:34,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:34,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:34,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:34,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 20:23:34,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:34,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-09-24 20:23:34,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:34,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-09-24 20:23:34,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:34,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-24 20:23:34,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:34,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:34,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:34,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:34,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:34,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:34,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 20:23:34,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:34,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-09-24 20:23:34,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:34,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-24 20:23:34,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:34,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 20:23:34,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:34,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:34,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:34,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:34,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:34,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:34,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-24 20:23:34,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:34,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-09-24 20:23:34,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:34,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 20:23:34,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:34,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-24 20:23:34,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:34,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:34,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:34,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:35,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:35,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:23:35,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:35,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-24 20:23:35,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:35,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 20:23:35,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:35,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 20:23:35,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:35,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:35,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:35,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:35,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:35,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:35,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 20:23:35,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:35,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-24 20:23:35,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:35,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:23:35,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:35,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 20:23:35,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:35,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:35,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:35,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:35,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:35,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:23:35,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:35,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 20:23:35,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:35,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:23:35,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:35,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:23:35,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:35,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:35,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:35,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:35,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:35,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:35,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 20:23:35,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:35,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 20:23:35,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:35,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:23:35,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:35,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 20:23:35,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:35,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:35,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:35,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:35,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:35,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:35,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:35,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:23:35,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:35,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:35,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:35,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:35,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:35,786 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-09-24 20:23:35,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [113614563] [2020-09-24 20:23:35,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:35,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-09-24 20:23:35,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762483642] [2020-09-24 20:23:35,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-09-24 20:23:35,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:35,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-09-24 20:23:35,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=597, Unknown=0, NotChecked=0, Total=650 [2020-09-24 20:23:35,788 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 26 states. [2020-09-24 20:23:37,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:37,478 INFO L93 Difference]: Finished difference Result 124 states and 128 transitions. [2020-09-24 20:23:37,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-24 20:23:37,479 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 92 [2020-09-24 20:23:37,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:37,480 INFO L225 Difference]: With dead ends: 124 [2020-09-24 20:23:37,481 INFO L226 Difference]: Without dead ends: 117 [2020-09-24 20:23:37,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=203, Invalid=2659, Unknown=0, NotChecked=0, Total=2862 [2020-09-24 20:23:37,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-09-24 20:23:37,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 80. [2020-09-24 20:23:37,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-24 20:23:37,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2020-09-24 20:23:37,489 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 92 [2020-09-24 20:23:37,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:37,489 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2020-09-24 20:23:37,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-09-24 20:23:37,489 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2020-09-24 20:23:37,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-09-24 20:23:37,490 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:37,490 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:37,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-24 20:23:37,491 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:37,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:37,491 INFO L82 PathProgramCache]: Analyzing trace with hash -751656891, now seen corresponding path program 4 times [2020-09-24 20:23:37,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:37,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379809244] [2020-09-24 20:23:37,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:37,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:37,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:38,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:38,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-24 20:23:38,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:38,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1144 [2020-09-24 20:23:38,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:38,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-09-24 20:23:38,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:23:38,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-24 20:23:38,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:38,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:38,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:38,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:38,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:38,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:38,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:38,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:38,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:38,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:38,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:38,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:38,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:38,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 20:23:38,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:38,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:39,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:39,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-24 20:23:39,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:39,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-09-24 20:23:39,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:39,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-09-24 20:23:39,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:39,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-24 20:23:39,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:39,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:39,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:39,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:39,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:39,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-24 20:23:39,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:39,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-09-24 20:23:39,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:39,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-09-24 20:23:39,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:39,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-24 20:23:39,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:39,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:39,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:39,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:39,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:39,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 20:23:39,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:39,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-24 20:23:39,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:39,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-24 20:23:39,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:39,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 20:23:39,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:39,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:39,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:39,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:39,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:39,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 20:23:39,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:39,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-24 20:23:39,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:39,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 20:23:39,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:39,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 20:23:39,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:39,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:39,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:39,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:39,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 20:23:39,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:39,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-24 20:23:39,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:39,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 20:23:39,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:39,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 20:23:39,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:40,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:40,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:40,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:40,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:40,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 20:23:40,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:40,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-24 20:23:40,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:40,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:23:40,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:40,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:23:40,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:40,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:40,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:40,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:40,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:40,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 20:23:40,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:40,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 20:23:40,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:40,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:23:40,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:40,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 20:23:40,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:40,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:40,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:40,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:40,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:40,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 20:23:40,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:40,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 20:23:40,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:40,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:23:40,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:40,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 20:23:40,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:40,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:40,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:40,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:40,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:40,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:40,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:23:40,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:40,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:40,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:40,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:40,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:40,622 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-24 20:23:40,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379809244] [2020-09-24 20:23:40,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:40,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-24 20:23:40,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070055463] [2020-09-24 20:23:40,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-24 20:23:40,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:40,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-24 20:23:40,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=552, Unknown=0, NotChecked=0, Total=600 [2020-09-24 20:23:40,625 INFO L87 Difference]: Start difference. First operand 80 states and 84 transitions. Second operand 25 states. [2020-09-24 20:23:42,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:42,424 INFO L93 Difference]: Finished difference Result 129 states and 133 transitions. [2020-09-24 20:23:42,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-24 20:23:42,426 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 93 [2020-09-24 20:23:42,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:42,427 INFO L225 Difference]: With dead ends: 129 [2020-09-24 20:23:42,428 INFO L226 Difference]: Without dead ends: 122 [2020-09-24 20:23:42,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 15 SyntacticMatches, 5 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=186, Invalid=2570, Unknown=0, NotChecked=0, Total=2756 [2020-09-24 20:23:42,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-09-24 20:23:42,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 80. [2020-09-24 20:23:42,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-24 20:23:42,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2020-09-24 20:23:42,434 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 93 [2020-09-24 20:23:42,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:42,434 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2020-09-24 20:23:42,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-24 20:23:42,435 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2020-09-24 20:23:42,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-24 20:23:42,436 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:42,436 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:42,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-24 20:23:42,436 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:42,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:42,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1968989964, now seen corresponding path program 4 times [2020-09-24 20:23:42,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:42,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971434078] [2020-09-24 20:23:42,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:42,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:42,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:42,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:43,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:43,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-24 20:23:43,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:43,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1325 [2020-09-24 20:23:43,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:43,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-09-24 20:23:43,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:23:43,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-24 20:23:43,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:43,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:43,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:44,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:44,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:44,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:44,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:44,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:44,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:44,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:44,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:44,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:44,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:44,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 20:23:44,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:44,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:44,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:44,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:44,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-24 20:23:44,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:44,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-09-24 20:23:44,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:44,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-09-24 20:23:44,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:44,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-24 20:23:44,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:44,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:44,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:44,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:44,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:44,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:44,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-09-24 20:23:44,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:44,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-09-24 20:23:44,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:44,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-09-24 20:23:44,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:44,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 20:23:44,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:44,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:44,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:44,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:44,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:45,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:45,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 20:23:45,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:45,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-09-24 20:23:45,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:45,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-09-24 20:23:45,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:45,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-24 20:23:45,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1