/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/Ackermann01-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:22:48,023 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:22:48,028 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:22:48,077 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:22:48,078 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:22:48,089 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:22:48,091 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:22:48,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:22:48,099 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:22:48,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:22:48,103 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:22:48,105 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:22:48,105 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:22:48,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:22:48,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:22:48,113 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:22:48,115 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:22:48,116 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:22:48,118 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:22:48,128 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:22:48,131 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:22:48,132 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:22:48,133 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:22:48,134 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:22:48,137 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:22:48,137 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:22:48,138 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:22:48,141 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:22:48,142 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:22:48,144 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:22:48,144 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:22:48,146 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:22:48,147 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:22:48,148 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:22:48,149 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:22:48,149 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:22:48,150 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:22:48,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:22:48,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:22:48,152 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:22:48,154 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:22:48,155 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 20:22:48,205 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:22:48,205 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:22:48,207 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:22:48,208 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:22:48,208 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:22:48,208 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:22:48,209 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:22:48,209 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:22:48,209 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:22:48,209 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:22:48,210 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:22:48,211 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:22:48,211 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:22:48,211 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:22:48,211 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:22:48,212 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:22:48,212 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:22:48,212 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:22:48,212 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:22:48,212 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:22:48,213 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:22:48,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:22:48,213 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:22:48,213 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:22:48,214 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:22:48,214 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:22:48,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:22:48,214 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:22:48,214 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:22:48,215 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 20:22:48,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:22:48,697 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:22:48,704 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:22:48,707 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:22:48,708 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:22:48,709 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Ackermann01-2.c [2020-09-24 20:22:48,789 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0232ce175/e7b91e31dc90475da5a21c3ba4c61686/FLAGef508f7be [2020-09-24 20:22:49,353 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:22:49,353 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Ackermann01-2.c [2020-09-24 20:22:49,362 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0232ce175/e7b91e31dc90475da5a21c3ba4c61686/FLAGef508f7be [2020-09-24 20:22:49,697 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0232ce175/e7b91e31dc90475da5a21c3ba4c61686 [2020-09-24 20:22:49,712 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:22:49,718 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:22:49,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:22:49,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:22:49,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:22:49,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:22:49" (1/1) ... [2020-09-24 20:22:49,730 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64dc1c12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:49, skipping insertion in model container [2020-09-24 20:22:49,731 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:22:49" (1/1) ... [2020-09-24 20:22:49,740 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:22:49,769 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:22:49,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:22:50,007 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:22:50,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:22:50,042 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:22:50,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:50 WrapperNode [2020-09-24 20:22:50,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:22:50,044 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:22:50,044 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:22:50,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:22:50,061 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:50" (1/1) ... [2020-09-24 20:22:50,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:50" (1/1) ... [2020-09-24 20:22:50,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:50" (1/1) ... [2020-09-24 20:22:50,146 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:50" (1/1) ... [2020-09-24 20:22:50,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:50" (1/1) ... [2020-09-24 20:22:50,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:50" (1/1) ... [2020-09-24 20:22:50,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:50" (1/1) ... [2020-09-24 20:22:50,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:22:50,158 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:22:50,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:22:50,159 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:22:50,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:50" (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 20:22:50,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:22:50,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:22:50,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2020-09-24 20:22:50,242 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:22:50,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:22:50,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:22:50,243 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2020-09-24 20:22:50,243 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:22:50,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:22:50,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:22:50,526 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:22:50,527 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 20:22:50,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:22:50 BoogieIcfgContainer [2020-09-24 20:22:50,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:22:50,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:22:50,544 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:22:50,550 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:22:50,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:22:49" (1/3) ... [2020-09-24 20:22:50,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ba46096 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:22:50, skipping insertion in model container [2020-09-24 20:22:50,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:50" (2/3) ... [2020-09-24 20:22:50,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ba46096 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:22:50, skipping insertion in model container [2020-09-24 20:22:50,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:22:50" (3/3) ... [2020-09-24 20:22:50,560 INFO L109 eAbstractionObserver]: Analyzing ICFG Ackermann01-2.c [2020-09-24 20:22:50,581 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:22:50,594 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:22:50,613 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:22:50,641 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:22:50,641 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:22:50,641 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:22:50,641 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:22:50,641 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:22:50,642 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:22:50,642 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:22:50,642 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:22:50,662 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-24 20:22:50,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-24 20:22:50,670 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:22:50,671 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] [2020-09-24 20:22:50,672 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:22:50,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:22:50,678 INFO L82 PathProgramCache]: Analyzing trace with hash -852610024, now seen corresponding path program 1 times [2020-09-24 20:22:50,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:22:50,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1057282424] [2020-09-24 20:22:50,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:22:50,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:50,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:50,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:50,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:22:50,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:50,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-24 20:22:50,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:50,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:22:50,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 20:22:50,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 20:22:50,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 20:22:51,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:22:51,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:51,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:51,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:51,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:22:51,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:51,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:22:51,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:51,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:22:51,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:51,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:22:51,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:51,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:22:51,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:51,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:51,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:51,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:22:51,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:51,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-24 20:22:51,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:51,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:22:51,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:51,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:22:51,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:51,266 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 20:22:51,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1057282424] [2020-09-24 20:22:51,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:22:51,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 20:22:51,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233462155] [2020-09-24 20:22:51,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 20:22:51,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:22:51,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 20:22:51,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:22:51,305 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 6 states. [2020-09-24 20:22:51,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:22:51,566 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-09-24 20:22:51,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 20:22:51,568 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-09-24 20:22:51,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:22:51,583 INFO L225 Difference]: With dead ends: 59 [2020-09-24 20:22:51,583 INFO L226 Difference]: Without dead ends: 39 [2020-09-24 20:22:51,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:22:51,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-24 20:22:51,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-09-24 20:22:51,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-24 20:22:51,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-09-24 20:22:51,647 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 24 [2020-09-24 20:22:51,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:22:51,648 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-09-24 20:22:51,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 20:22:51,648 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-09-24 20:22:51,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 20:22:51,652 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:22:51,652 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] [2020-09-24 20:22:51,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:22:51,653 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:22:51,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:22:51,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1574290279, now seen corresponding path program 1 times [2020-09-24 20:22:51,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:22:51,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371350068] [2020-09-24 20:22:51,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:22:51,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:51,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:51,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:51,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 20:22:51,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:51,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-09-24 20:22:51,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:51,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:22:51,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-24 20:22:51,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 20:22:51,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:51,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:22:51,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:51,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:51,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:51,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:22:51,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:51,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:22:51,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:51,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:22:51,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:51,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:22:51,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:51,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:22:51,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:52,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:52,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:52,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 20:22:52,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:52,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-24 20:22:52,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:52,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:22:52,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:52,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 20:22:52,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:52,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:22:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:52,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:52,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:52,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:22:52,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:52,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 20:22:52,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:52,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:22:52,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:52,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:22:52,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:22:52,175 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 20:22:52,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371350068] [2020-09-24 20:22:52,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:22:52,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 20:22:52,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330213897] [2020-09-24 20:22:52,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:22:52,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:22:52,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:22:52,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:22:52,180 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 8 states. [2020-09-24 20:22:52,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:22:52,378 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-24 20:22:52,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 20:22:52,379 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-09-24 20:22:52,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:22:52,382 INFO L225 Difference]: With dead ends: 50 [2020-09-24 20:22:52,382 INFO L226 Difference]: Without dead ends: 44 [2020-09-24 20:22:52,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-09-24 20:22:52,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-24 20:22:52,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-24 20:22:52,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 20:22:52,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2020-09-24 20:22:52,394 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 34 [2020-09-24 20:22:52,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:22:52,395 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-09-24 20:22:52,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:22:52,395 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2020-09-24 20:22:52,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 20:22:52,397 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:22:52,398 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:22:52,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:22:52,398 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:22:52,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:22:52,399 INFO L82 PathProgramCache]: Analyzing trace with hash 2094172607, now seen corresponding path program 1 times [2020-09-24 20:22:52,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:22:52,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700497200] [2020-09-24 20:22:52,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:22:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:52,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:52,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:52,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:53,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:53,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 20:22:53,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:22:53,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 857 [2020-09-24 20:22:53,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:53,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 20:22:53,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 20:22:53,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 20:22:53,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:22:53,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:22:53,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:53,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:53,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:53,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:22:53,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:53,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:22:53,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:53,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:22:53,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:53,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:22:53,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:53,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:22:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:53,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:53,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:53,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:53,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:53,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 20:22:53,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:22:53,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 678 [2020-09-24 20:22:53,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:53,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:22:53,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:53,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 20:22:53,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:54,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:22:54,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:54,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:54,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:54,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:22:54,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:54,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 20:22:54,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:54,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:22:54,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:54,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:22:54,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:54,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:22:54,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:54,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:54,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:54,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:22:54,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:54,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:22:54,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:54,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:22:54,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:54,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:22:54,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:22:54,142 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-24 20:22:54,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700497200] [2020-09-24 20:22:54,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:22:54,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 20:22:54,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436919301] [2020-09-24 20:22:54,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 20:22:54,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:22:54,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 20:22:54,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:22:54,145 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 9 states. [2020-09-24 20:22:54,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:22:54,368 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2020-09-24 20:22:54,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 20:22:54,369 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 43 [2020-09-24 20:22:54,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:22:54,371 INFO L225 Difference]: With dead ends: 61 [2020-09-24 20:22:54,372 INFO L226 Difference]: Without dead ends: 55 [2020-09-24 20:22:54,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-09-24 20:22:54,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-24 20:22:54,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2020-09-24 20:22:54,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-24 20:22:54,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2020-09-24 20:22:54,385 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 43 [2020-09-24 20:22:54,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:22:54,385 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2020-09-24 20:22:54,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 20:22:54,386 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2020-09-24 20:22:54,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-24 20:22:54,389 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:22:54,389 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 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, 1, 1, 1, 1] [2020-09-24 20:22:54,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:22:54,389 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:22:54,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:22:54,390 INFO L82 PathProgramCache]: Analyzing trace with hash 43957023, now seen corresponding path program 1 times [2020-09-24 20:22:54,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:22:54,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373076850] [2020-09-24 20:22:54,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:22:54,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:54,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:54,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:54,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:54,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:57,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:59,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:59,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 20:22:59,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:22:59,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 20:22:59,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:59,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:22:59,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-24 20:22:59,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:22:59,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:22:59,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:22:59,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:59,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:59,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:59,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:22:59,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:59,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:22:59,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:59,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:22:59,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:59,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:22:59,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:59,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:22:59,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:59,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:59,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:59,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:59,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:01,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:04,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 20:23:04,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:23:04,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 20:23:04,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:04,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:23:04,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:04,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 20:23:04,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:04,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:04,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:04,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:04,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:04,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:04,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:23:04,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:04,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:04,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:04,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:04,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:04,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:23:04,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:04,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:04,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 20:23:04,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:04,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-09-24 20:23:04,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:04,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:23:04,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:04,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 20:23:04,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:04,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:04,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:04,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 20:23:04,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:04,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-24 20:23:04,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:04,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:04,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:04,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 20:23:04,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:23:04,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:04,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:04,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:04,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:04,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:04,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:23:04,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:04,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:04,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:04,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:04,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:05,031 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-09-24 20:23:05,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373076850] [2020-09-24 20:23:05,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:05,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 20:23:05,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562256113] [2020-09-24 20:23:05,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 20:23:05,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:05,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 20:23:05,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:23:05,038 INFO L87 Difference]: Start difference. First operand 52 states and 66 transitions. Second operand 9 states. [2020-09-24 20:23:05,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:05,308 INFO L93 Difference]: Finished difference Result 67 states and 84 transitions. [2020-09-24 20:23:05,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 20:23:05,308 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 63 [2020-09-24 20:23:05,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:05,312 INFO L225 Difference]: With dead ends: 67 [2020-09-24 20:23:05,316 INFO L226 Difference]: Without dead ends: 61 [2020-09-24 20:23:05,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-09-24 20:23:05,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-24 20:23:05,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2020-09-24 20:23:05,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-24 20:23:05,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 70 transitions. [2020-09-24 20:23:05,336 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 70 transitions. Word has length 63 [2020-09-24 20:23:05,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:05,337 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 70 transitions. [2020-09-24 20:23:05,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 20:23:05,337 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 70 transitions. [2020-09-24 20:23:05,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-24 20:23:05,347 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:05,352 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1] [2020-09-24 20:23:05,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:23:05,353 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:05,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:05,354 INFO L82 PathProgramCache]: Analyzing trace with hash -387532576, now seen corresponding path program 2 times [2020-09-24 20:23:05,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:05,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1543558527] [2020-09-24 20:23:05,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:05,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:05,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:05,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:05,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:06,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:06,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 20:23:06,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:23:06,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 880 [2020-09-24 20:23:06,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:06,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 20:23:06,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-24 20:23:06,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-24 20:23:06,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:06,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:06,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:06,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:06,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:06,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:06,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:06,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:06,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:06,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:06,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:06,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:06,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:23:06,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:06,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:06,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:06,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:06,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:06,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:23:06,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:23:06,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 517 [2020-09-24 20:23:06,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:06,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:23:06,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:06,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:23:06,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:06,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:06,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:06,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:06,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:06,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:07,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:07,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 20:23:07,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:23:07,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 437 [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: 13 [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: 32 [2020-09-24 20:23:07,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:07,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:07,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:07,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:07,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:07,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:07,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:07,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 20:23:07,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:07,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:07,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:07,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:07,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:23:07,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:23:07,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:07,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:07,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:07,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:07,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:07,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 20:23:07,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:07,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:07,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:07,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:07,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:07,467 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-24 20:23:07,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1543558527] [2020-09-24 20:23:07,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:07,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 20:23:07,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896409899] [2020-09-24 20:23:07,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 20:23:07,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:07,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 20:23:07,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:23:07,471 INFO L87 Difference]: Start difference. First operand 56 states and 70 transitions. Second operand 11 states. [2020-09-24 20:23:07,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:07,872 INFO L93 Difference]: Finished difference Result 78 states and 98 transitions. [2020-09-24 20:23:07,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 20:23:07,875 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 53 [2020-09-24 20:23:07,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:07,877 INFO L225 Difference]: With dead ends: 78 [2020-09-24 20:23:07,877 INFO L226 Difference]: Without dead ends: 72 [2020-09-24 20:23:07,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2020-09-24 20:23:07,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-24 20:23:07,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 61. [2020-09-24 20:23:07,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-24 20:23:07,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 78 transitions. [2020-09-24 20:23:07,901 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 78 transitions. Word has length 53 [2020-09-24 20:23:07,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:07,902 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 78 transitions. [2020-09-24 20:23:07,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 20:23:07,903 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 78 transitions. [2020-09-24 20:23:07,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-24 20:23:07,906 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:07,906 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1] [2020-09-24 20:23:07,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:23:07,907 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:07,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:07,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1685750542, now seen corresponding path program 3 times [2020-09-24 20:23:07,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:07,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553960113] [2020-09-24 20:23:07,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:07,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:08,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:08,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 20:23:08,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:08,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-09-24 20:23:08,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:08,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 20:23:08,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-24 20:23:08,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 20:23:08,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:08,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:08,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:08,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:08,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:08,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:08,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:08,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:08,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:08,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:08,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:08,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:08,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:08,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:23:08,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:08,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:08,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:08,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:23:08,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:08,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-24 20:23:08,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:08,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:23:08,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:08,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:23:08,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:08,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:08,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:08,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:08,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:08,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 20:23:08,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:08,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-24 20:23:08,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:08,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:08,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:08,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 20:23:08,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:08,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:08,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:08,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:08,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:08,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:08,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:08,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:23:08,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:08,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:08,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:08,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:08,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:08,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 20:23:08,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:08,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:08,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:08,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:08,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:08,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:23:08,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:08,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:08,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:08,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:08,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:08,622 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-24 20:23:08,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553960113] [2020-09-24 20:23:08,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:08,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 20:23:08,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661904473] [2020-09-24 20:23:08,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 20:23:08,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:08,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 20:23:08,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-09-24 20:23:08,626 INFO L87 Difference]: Start difference. First operand 61 states and 78 transitions. Second operand 13 states. [2020-09-24 20:23:09,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:09,321 INFO L93 Difference]: Finished difference Result 120 states and 189 transitions. [2020-09-24 20:23:09,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 20:23:09,321 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2020-09-24 20:23:09,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:09,327 INFO L225 Difference]: With dead ends: 120 [2020-09-24 20:23:09,328 INFO L226 Difference]: Without dead ends: 114 [2020-09-24 20:23:09,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=600, Unknown=0, NotChecked=0, Total=756 [2020-09-24 20:23:09,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-24 20:23:09,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 79. [2020-09-24 20:23:09,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-09-24 20:23:09,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 114 transitions. [2020-09-24 20:23:09,362 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 114 transitions. Word has length 53 [2020-09-24 20:23:09,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:09,362 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 114 transitions. [2020-09-24 20:23:09,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 20:23:09,362 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 114 transitions. [2020-09-24 20:23:09,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-24 20:23:09,366 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:09,366 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 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, 1, 1, 1, 1] [2020-09-24 20:23:09,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:23:09,367 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:09,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:09,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1096450289, now seen corresponding path program 4 times [2020-09-24 20:23:09,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:09,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502464599] [2020-09-24 20:23:09,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:09,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:09,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:09,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:09,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 20:23:09,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:09,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-09-24 20:23:09,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:09,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 20:23:09,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-24 20:23:09,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 20:23:09,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:09,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:09,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:09,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:09,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:09,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:09,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:09,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:09,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:09,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:09,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:09,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:09,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:09,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:23:09,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:09,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:10,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 20:23:10,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:10,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-09-24 20:23:10,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:10,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:23:10,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:10,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 20:23:10,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:10,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:10,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:10,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:10,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:23:10,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:10,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-24 20:23:10,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:10,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:23:10,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:10,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:23:10,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:10,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:10,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:10,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:10,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 20:23:10,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:10,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-24 20:23:10,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:10,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:10,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:10,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 20:23:10,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:10,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:10,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:10,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:10,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:10,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:10,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:23:10,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:10,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:10,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:10,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:10,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:10,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 20:23:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:10,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:10,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:10,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:10,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:23:10,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:10,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:10,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:10,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:10,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:10,398 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-24 20:23:10,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502464599] [2020-09-24 20:23:10,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:10,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 20:23:10,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355283393] [2020-09-24 20:23:10,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 20:23:10,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:10,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 20:23:10,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:23:10,401 INFO L87 Difference]: Start difference. First operand 79 states and 114 transitions. Second operand 12 states. [2020-09-24 20:23:10,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:10,754 INFO L93 Difference]: Finished difference Result 108 states and 156 transitions. [2020-09-24 20:23:10,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 20:23:10,754 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2020-09-24 20:23:10,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:10,756 INFO L225 Difference]: With dead ends: 108 [2020-09-24 20:23:10,757 INFO L226 Difference]: Without dead ends: 102 [2020-09-24 20:23:10,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2020-09-24 20:23:10,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-24 20:23:10,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 77. [2020-09-24 20:23:10,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-24 20:23:10,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 107 transitions. [2020-09-24 20:23:10,772 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 107 transitions. Word has length 63 [2020-09-24 20:23:10,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:10,772 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 107 transitions. [2020-09-24 20:23:10,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 20:23:10,772 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 107 transitions. [2020-09-24 20:23:10,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-24 20:23:10,774 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:10,774 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 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 20:23:10,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 20:23:10,775 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:10,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:10,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1856201433, now seen corresponding path program 5 times [2020-09-24 20:23:10,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:10,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70208865] [2020-09-24 20:23:10,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:10,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:10,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:11,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:12,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:15,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:15,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:15,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 20:23:15,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 20:23:15,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 20:23:15,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:15,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 20:23:15,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 20:23:15,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 20:23:15,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:15,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:15,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:15,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:15,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:15,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:15,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:15,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:15,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:15,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:15,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:15,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:15,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:15,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:23:15,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:15,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:15,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:15,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:15,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:16,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:17,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:19,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:20,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:20,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-24 20:23:20,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 20:23:20,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 20:23:20,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:20,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 20:23:20,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:20,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-24 20:23:20,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:20,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:20,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:20,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:20,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:20,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:20,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:20,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:23:20,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:20,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:20,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:20,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:20,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:20,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:23:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:20,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:20,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:20,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:21,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:21,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:23:21,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:23:21,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 669 [2020-09-24 20:23:21,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:21,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:23:21,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:21,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:23:21,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:21,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:21,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:21,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:21,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:21,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:21,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 20:23:21,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:23:21,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-09-24 20:23:21,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:21,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:23:21,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:21,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 20:23:21,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:22,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:22,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:22,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:22,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:22,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:22,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:22,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 20:23:22,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:22,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:22,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:22,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:22,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:22,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:23:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:22,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:22,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:22,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:22,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:22,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 20:23:22,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:22,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:22,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:22,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:22,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:22,192 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 35 proven. 15 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-09-24 20:23:22,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70208865] [2020-09-24 20:23:22,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:22,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 20:23:22,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953573352] [2020-09-24 20:23:22,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 20:23:22,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:22,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 20:23:22,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-09-24 20:23:22,195 INFO L87 Difference]: Start difference. First operand 77 states and 107 transitions. Second operand 14 states. [2020-09-24 20:23:22,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:22,781 INFO L93 Difference]: Finished difference Result 158 states and 289 transitions. [2020-09-24 20:23:22,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 20:23:22,781 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 72 [2020-09-24 20:23:22,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:22,784 INFO L225 Difference]: With dead ends: 158 [2020-09-24 20:23:22,784 INFO L226 Difference]: Without dead ends: 152 [2020-09-24 20:23:22,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=188, Invalid=624, Unknown=0, NotChecked=0, Total=812 [2020-09-24 20:23:22,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-09-24 20:23:22,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 93. [2020-09-24 20:23:22,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-24 20:23:22,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 150 transitions. [2020-09-24 20:23:22,806 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 150 transitions. Word has length 72 [2020-09-24 20:23:22,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:22,807 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 150 transitions. [2020-09-24 20:23:22,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 20:23:22,807 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 150 transitions. [2020-09-24 20:23:22,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-24 20:23:22,809 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:22,809 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 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 20:23:22,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 20:23:22,810 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:22,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:22,810 INFO L82 PathProgramCache]: Analyzing trace with hash 323026199, now seen corresponding path program 6 times [2020-09-24 20:23:22,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:22,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544229534] [2020-09-24 20:23:22,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:22,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:22,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:22,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:22,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:23,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:23,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:27,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:27,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 20:23:27,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:23:27,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4971 [2020-09-24 20:23:27,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:27,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 20:23:27,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-24 20:23:27,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 20:23:27,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:27,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:27,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:27,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:27,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:27,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:27,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:27,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:27,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:27,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:27,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:27,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:27,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:27,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:23:27,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:27,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:27,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:27,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:28,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:28,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:31,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:31,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-24 20:23:31,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:23:31,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3308 [2020-09-24 20:23:31,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:31,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 20:23:31,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:31,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-24 20:23:31,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:31,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:31,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:31,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:31,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:31,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 20:23:31,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:31,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 20:23:31,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:31,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:31,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:31,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 20:23:31,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:31,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:31,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:31,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:31,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:31,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:31,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:23:31,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:31,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:31,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:31,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:31,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:31,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 20:23:31,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:31,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:31,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:31,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:31,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:31,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 20:23:31,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:23:31,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 376 [2020-09-24 20:23:31,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:31,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 20:23:31,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:31,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 20:23:31,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:31,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 20:23:31,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:31,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:31,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:31,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:31,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:31,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 20:23:31,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:31,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:31,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:31,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:31,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:31,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:23:31,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:31,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:31,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:31,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:31,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:31,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:23:31,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:31,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:31,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:31,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:31,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:31,809 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 23 proven. 23 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-09-24 20:23:31,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544229534] [2020-09-24 20:23:31,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:31,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 20:23:31,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827761967] [2020-09-24 20:23:31,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 20:23:31,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:31,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 20:23:31,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-09-24 20:23:31,823 INFO L87 Difference]: Start difference. First operand 93 states and 150 transitions. Second operand 15 states. [2020-09-24 20:23:33,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:33,095 INFO L93 Difference]: Finished difference Result 228 states and 505 transitions. [2020-09-24 20:23:33,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-24 20:23:33,099 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 72 [2020-09-24 20:23:33,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:33,104 INFO L225 Difference]: With dead ends: 228 [2020-09-24 20:23:33,104 INFO L226 Difference]: Without dead ends: 222 [2020-09-24 20:23:33,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=281, Invalid=1279, Unknown=0, NotChecked=0, Total=1560 [2020-09-24 20:23:33,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-09-24 20:23:33,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 132. [2020-09-24 20:23:33,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-09-24 20:23:33,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 271 transitions. [2020-09-24 20:23:33,130 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 271 transitions. Word has length 72 [2020-09-24 20:23:33,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:33,130 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 271 transitions. [2020-09-24 20:23:33,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 20:23:33,131 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 271 transitions. [2020-09-24 20:23:33,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-24 20:23:33,133 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:33,134 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 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, 1] [2020-09-24 20:23:33,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 20:23:33,134 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:33,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:33,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1519123360, now seen corresponding path program 7 times [2020-09-24 20:23:33,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:33,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140416146] [2020-09-24 20:23:33,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:33,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:33,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:33,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:33,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:33,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:33,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:34,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:34,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:34,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:38,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:38,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-09-24 20:23:38,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 20:23:38,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 20:23:38,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:38,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:23:38,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-24 20:23:38,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 20:23:38,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:38,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:38,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:38,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:38,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:38,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:38,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:38,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:38,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:38,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:38,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:38,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:38,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:38,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:23:38,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:38,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:38,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:38,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:38,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:38,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:39,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:39,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:40,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking...