/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/Fibonacci05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:22:59,115 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:22:59,119 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:22:59,145 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:22:59,145 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:22:59,147 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:22:59,148 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:22:59,150 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:22:59,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:22:59,153 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:22:59,154 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:22:59,155 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:22:59,155 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:22:59,156 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:22:59,158 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:22:59,159 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:22:59,160 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:22:59,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:22:59,163 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:22:59,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:22:59,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:22:59,168 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:22:59,170 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:22:59,171 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:22:59,173 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:22:59,174 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:22:59,174 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:22:59,175 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:22:59,175 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:22:59,177 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:22:59,177 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:22:59,178 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:22:59,179 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:22:59,180 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:22:59,181 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:22:59,181 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:22:59,182 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:22:59,182 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:22:59,182 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:22:59,183 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:22:59,184 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:22:59,185 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 20:22:59,217 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:22:59,221 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:22:59,222 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:22:59,222 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:22:59,223 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:22:59,223 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:22:59,223 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:22:59,223 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:22:59,223 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:22:59,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:22:59,226 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:22:59,226 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:22:59,226 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:22:59,227 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:22:59,227 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:22:59,227 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:22:59,227 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:22:59,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:22:59,228 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:22:59,228 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:22:59,228 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:22:59,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:22:59,228 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:22:59,229 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:22:59,231 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:22:59,231 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:22:59,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:22:59,231 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:22:59,232 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:22:59,232 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 20:22:59,724 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:22:59,751 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:22:59,756 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:22:59,759 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:22:59,760 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:22:59,761 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci05.c [2020-09-24 20:22:59,854 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb188b52c/d67b7f4e292743fc94e2a677cd314d39/FLAG7fbfb4bdd [2020-09-24 20:23:00,367 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:23:00,368 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Fibonacci05.c [2020-09-24 20:23:00,377 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb188b52c/d67b7f4e292743fc94e2a677cd314d39/FLAG7fbfb4bdd [2020-09-24 20:23:00,718 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb188b52c/d67b7f4e292743fc94e2a677cd314d39 [2020-09-24 20:23:00,732 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:23:00,739 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:23:00,740 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:23:00,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:23:00,745 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:23:00,746 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:23:00" (1/1) ... [2020-09-24 20:23:00,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb7919e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:00, skipping insertion in model container [2020-09-24 20:23:00,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:23:00" (1/1) ... [2020-09-24 20:23:00,759 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:23:00,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:23:00,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:23:00,997 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:23:01,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:23:01,034 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:23:01,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:01 WrapperNode [2020-09-24 20:23:01,035 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:23:01,036 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:23:01,036 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:23:01,036 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:23:01,053 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:01" (1/1) ... [2020-09-24 20:23:01,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:01" (1/1) ... [2020-09-24 20:23:01,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:01" (1/1) ... [2020-09-24 20:23:01,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:01" (1/1) ... [2020-09-24 20:23:01,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:01" (1/1) ... [2020-09-24 20:23:01,065 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:01" (1/1) ... [2020-09-24 20:23:01,066 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:01" (1/1) ... [2020-09-24 20:23:01,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:23:01,068 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:23:01,068 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:23:01,068 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:23:01,069 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:01" (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 20:23:01,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:23:01,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:23:01,219 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2020-09-24 20:23:01,220 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:23:01,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:23:01,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:23:01,220 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2020-09-24 20:23:01,220 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:23:01,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:23:01,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:23:01,415 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:23:01,415 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 20:23:01,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:23:01 BoogieIcfgContainer [2020-09-24 20:23:01,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:23:01,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:23:01,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:23:01,425 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:23:01,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:23:00" (1/3) ... [2020-09-24 20:23:01,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63cb2493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:23:01, skipping insertion in model container [2020-09-24 20:23:01,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:01" (2/3) ... [2020-09-24 20:23:01,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63cb2493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:23:01, skipping insertion in model container [2020-09-24 20:23:01,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:23:01" (3/3) ... [2020-09-24 20:23:01,430 INFO L109 eAbstractionObserver]: Analyzing ICFG Fibonacci05.c [2020-09-24 20:23:01,442 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:23:01,452 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:23:01,505 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:23:01,567 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:23:01,567 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:23:01,567 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:23:01,567 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:23:01,568 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:23:01,568 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:23:01,568 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:23:01,568 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:23:01,598 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-09-24 20:23:01,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-24 20:23:01,605 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:01,606 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:01,607 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:01,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:01,613 INFO L82 PathProgramCache]: Analyzing trace with hash -2064988448, now seen corresponding path program 1 times [2020-09-24 20:23:01,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:01,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67449820] [2020-09-24 20:23:01,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:01,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:01,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:01,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:01,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 20:23:01,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:01,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-24 20:23:01,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:01,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:01,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 20:23:01,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 20:23:01,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:23:01,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:01,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:01,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:01,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:01,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:01,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:01,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:23:01,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:01,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:01,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:01,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:01,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:01,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 20:23:01,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:01,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:01,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:01,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:01,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:01,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 20:23:01,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:01,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:01,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:01,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:01,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:23:02,058 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 20:23:02,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67449820] [2020-09-24 20:23:02,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:23:02,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:23:02,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680234572] [2020-09-24 20:23:02,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:23:02,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:02,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:23:02,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:23:02,086 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2020-09-24 20:23:02,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:02,204 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2020-09-24 20:23:02,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 20:23:02,207 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-24 20:23:02,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:02,220 INFO L225 Difference]: With dead ends: 48 [2020-09-24 20:23:02,221 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 20:23:02,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:23:02,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 20:23:02,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-24 20:23:02,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-24 20:23:02,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-24 20:23:02,279 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 18 [2020-09-24 20:23:02,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:02,279 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-24 20:23:02,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:23:02,280 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-24 20:23:02,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-24 20:23:02,282 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:02,282 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:02,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:23:02,283 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:02,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:02,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1678486471, now seen corresponding path program 1 times [2020-09-24 20:23:02,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:02,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803307189] [2020-09-24 20:23:02,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:02,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:02,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:02,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:02,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-24 20:23:02,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:02,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-24 20:23:02,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:02,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:02,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 20:23:02,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 20:23:02,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:02,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:02,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:02,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:02,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:02,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:02,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:02,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:23:02,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:02,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:02,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:02,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:02,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:02,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 20:23:02,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:02,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:02,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:02,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:02,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:02,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-24 20:23:02,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:02,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:02,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:02,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:02,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 20:23:02,526 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 20:23:02,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803307189] [2020-09-24 20:23:02,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:23:02,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:23:02,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266700434] [2020-09-24 20:23:02,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:23:02,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:02,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:23:02,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:23:02,536 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2020-09-24 20:23:02,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:02,632 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2020-09-24 20:23:02,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 20:23:02,633 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-24 20:23:02,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:02,635 INFO L225 Difference]: With dead ends: 38 [2020-09-24 20:23:02,635 INFO L226 Difference]: Without dead ends: 32 [2020-09-24 20:23:02,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:23:02,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-24 20:23:02,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-09-24 20:23:02,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-24 20:23:02,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-24 20:23:02,654 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 19 [2020-09-24 20:23:02,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:02,654 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-24 20:23:02,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:23:02,654 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-24 20:23:02,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 20:23:02,657 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:02,657 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 20:23:02,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:23:02,658 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:02,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:02,659 INFO L82 PathProgramCache]: Analyzing trace with hash 961212118, now seen corresponding path program 1 times [2020-09-24 20:23:02,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:02,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496417137] [2020-09-24 20:23:02,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:02,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:02,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:02,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:03,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 20:23:03,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:23:03,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 580 [2020-09-24 20:23:03,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:03,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:03,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 20:23:03,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 20:23:03,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:23:03,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:03,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:03,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:03,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:03,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:23:03,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:03,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:03,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:03,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:03,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:03,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 20:23:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:03,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:03,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 20:23:03,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:03,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-24 20:23:03,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:03,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:03,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:03,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 20:23:03,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:03,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:03,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:03,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:03,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:03,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:03,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 20:23:03,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:03,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:03,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:03,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:03,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:03,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:23:03,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:03,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:03,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:03,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:03,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 20:23:03,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:03,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:03,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:03,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:23:03,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:03,537 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 20:23:03,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496417137] [2020-09-24 20:23:03,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:03,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 20:23:03,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499392928] [2020-09-24 20:23:03,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 20:23:03,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:03,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 20:23:03,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 20:23:03,545 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 7 states. [2020-09-24 20:23:03,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:03,636 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2020-09-24 20:23:03,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 20:23:03,637 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-24 20:23:03,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:03,639 INFO L225 Difference]: With dead ends: 68 [2020-09-24 20:23:03,639 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 20:23:03,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:23:03,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 20:23:03,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-09-24 20:23:03,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-24 20:23:03,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-24 20:23:03,650 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 35 [2020-09-24 20:23:03,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:03,651 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-24 20:23:03,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 20:23:03,651 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-24 20:23:03,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-24 20:23:03,653 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:03,653 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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 20:23:03,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:23:03,654 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:03,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:03,654 INFO L82 PathProgramCache]: Analyzing trace with hash -125795935, now seen corresponding path program 1 times [2020-09-24 20:23:03,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:03,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526275285] [2020-09-24 20:23:03,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:03,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:03,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:04,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 20:23:04,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:04,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-09-24 20:23:04,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:04,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:04,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 20:23:04,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 20:23:04,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:04,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:04,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:04,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:04,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:04,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:04,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:23:04,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:04,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:04,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:04,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:04,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:04,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 20:23:04,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:04,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:04,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:23:04,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:04,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-09-24 20:23:04,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:04,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:04,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:04,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:23:04,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:04,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:04,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:04,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:04,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:04,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:04,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 20:23:04,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:04,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:04,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:04,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:04,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:04,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:23:04,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:04,449 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: 11 [2020-09-24 20:23:04,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:04,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [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: 2 [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: 7 [2020-09-24 20:23:04,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:04,480 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 20:23:04,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526275285] [2020-09-24 20:23:04,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:04,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 20:23:04,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50329516] [2020-09-24 20:23:04,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 20:23:04,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:04,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 20:23:04,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 20:23:04,485 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 7 states. [2020-09-24 20:23:04,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:04,631 INFO L93 Difference]: Finished difference Result 100 states and 129 transitions. [2020-09-24 20:23:04,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 20:23:04,634 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-24 20:23:04,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:04,640 INFO L225 Difference]: With dead ends: 100 [2020-09-24 20:23:04,640 INFO L226 Difference]: Without dead ends: 64 [2020-09-24 20:23:04,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:23:04,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-24 20:23:04,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2020-09-24 20:23:04,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-24 20:23:04,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 79 transitions. [2020-09-24 20:23:04,672 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 79 transitions. Word has length 36 [2020-09-24 20:23:04,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:04,673 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 79 transitions. [2020-09-24 20:23:04,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 20:23:04,673 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 79 transitions. [2020-09-24 20:23:04,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 20:23:04,680 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:04,681 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 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] [2020-09-24 20:23:04,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:23:04,683 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:04,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:04,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1970096676, now seen corresponding path program 2 times [2020-09-24 20:23:04,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:04,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630751703] [2020-09-24 20:23:04,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:04,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:04,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:05,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:05,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:05,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:05,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:08,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:08,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 20:23:08,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 20:23:08,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4068 [2020-09-24 20:23:08,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:08,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:23:08,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 20:23:08,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 20:23:08,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:08,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:08,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:08,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:08,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:08,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:08,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:08,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:23:08,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:08,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:08,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:08,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:08,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:08,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 20:23:08,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:08,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:08,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:08,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:08,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:09,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:09,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 20:23:09,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:23:09,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 749 [2020-09-24 20:23:09,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:09,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:23:09,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 20:23:09,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 20:23:09,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:09,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:09,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:09,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:09,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:09,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:09,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:09,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:09,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 20:23:09,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:23:09,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-24 20:23:09,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:09,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:09,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:23:09,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:23:09,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:09,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:09,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:09,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:09,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:09,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:09,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:09,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:23:09,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:09,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:09,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:09,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:09,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:09,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:23:09,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:09,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:09,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:09,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:09,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:09,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:23:09,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:09,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:09,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:09,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:23:09,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:09,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 20:23:09,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:09,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:09,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:09,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:09,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:09,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:23:09,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:09,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:09,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:23:09,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:23:09,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:09,885 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-24 20:23:09,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630751703] [2020-09-24 20:23:09,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:09,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 20:23:09,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101903860] [2020-09-24 20:23:09,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 20:23:09,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:09,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 20:23:09,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:23:09,889 INFO L87 Difference]: Start difference. First operand 62 states and 79 transitions. Second operand 9 states. [2020-09-24 20:23:10,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:10,065 INFO L93 Difference]: Finished difference Result 106 states and 154 transitions. [2020-09-24 20:23:10,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 20:23:10,066 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-09-24 20:23:10,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:10,068 INFO L225 Difference]: With dead ends: 106 [2020-09-24 20:23:10,068 INFO L226 Difference]: Without dead ends: 52 [2020-09-24 20:23:10,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-09-24 20:23:10,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-24 20:23:10,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2020-09-24 20:23:10,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-24 20:23:10,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2020-09-24 20:23:10,093 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 52 [2020-09-24 20:23:10,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:10,095 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2020-09-24 20:23:10,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 20:23:10,095 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2020-09-24 20:23:10,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-24 20:23:10,099 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:10,099 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 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] [2020-09-24 20:23:10,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:23:10,100 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:10,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:10,100 INFO L82 PathProgramCache]: Analyzing trace with hash -2068833840, now seen corresponding path program 2 times [2020-09-24 20:23:10,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:10,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094368402] [2020-09-24 20:23:10,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:10,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:10,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:12,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:12,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 20:23:12,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:23:12,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2461 [2020-09-24 20:23:12,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:12,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:23:12,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 20:23:12,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-24 20:23:12,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:23:12,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:12,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:12,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:12,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:12,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:12,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:12,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:12,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:12,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:12,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:12,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:12,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:12,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 20:23:12,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:12,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:12,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:12,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:14,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:14,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:23:14,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:23:14,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1674 [2020-09-24 20:23:14,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:14,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:23:14,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:14,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 20:23:14,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:14,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:14,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:14,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:14,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:14,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:23:14,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:14,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-09-24 20:23:14,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:14,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:14,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:14,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:23:14,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:14,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:14,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:14,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:14,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:14,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:14,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:14,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 20:23:14,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:14,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:14,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:14,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:14,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:14,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:23:14,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:14,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:14,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:14,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:14,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:14,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:23:14,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:14,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:14,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:14,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:23:14,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:14,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 20:23:14,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:14,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:14,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:14,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:14,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:14,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:23:14,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:14,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:14,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:14,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:14,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:14,685 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-24 20:23:14,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094368402] [2020-09-24 20:23:14,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:14,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 20:23:14,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212397555] [2020-09-24 20:23:14,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:23:14,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:14,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:23:14,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:23:14,689 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand 8 states. [2020-09-24 20:23:14,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:14,832 INFO L93 Difference]: Finished difference Result 80 states and 103 transitions. [2020-09-24 20:23:14,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 20:23:14,832 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-09-24 20:23:14,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:14,834 INFO L225 Difference]: With dead ends: 80 [2020-09-24 20:23:14,834 INFO L226 Difference]: Without dead ends: 74 [2020-09-24 20:23:14,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:23:14,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-24 20:23:14,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-09-24 20:23:14,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-24 20:23:14,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 97 transitions. [2020-09-24 20:23:14,847 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 97 transitions. Word has length 54 [2020-09-24 20:23:14,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:14,848 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 97 transitions. [2020-09-24 20:23:14,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:23:14,848 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 97 transitions. [2020-09-24 20:23:14,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-09-24 20:23:14,850 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:14,850 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:14,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:23:14,851 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:14,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:14,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1575340027, now seen corresponding path program 3 times [2020-09-24 20:23:14,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:14,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435461783] [2020-09-24 20:23:14,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:14,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:14,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:14,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:15,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:15,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:15,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:15,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:16,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:16,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:16,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:17,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:17,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:17,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:17,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:17,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:17,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:17,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:17,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:17,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:19,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:19,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-24 20:23:19,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-24 20:23:19,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-09-24 20:23:19,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:19,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 20:23:19,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 20:23:19,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 20:23:19,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:19,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:19,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:19,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:19,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:19,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:19,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:19,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:23:19,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:19,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:19,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:19,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:19,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:19,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 20:23:19,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:19,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:20,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:20,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:20,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:20,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:20,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:20,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:21,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:23,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:23,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:23,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:24,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:24,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-24 20:23:24,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 20:23:24,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-24 20:23:24,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:24,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 20:23:24,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 20:23:24,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 20:23:24,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:25,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:25,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:25,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:25,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:25,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:26,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:26,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:23:26,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:23:26,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1736 [2020-09-24 20:23:26,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:26,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:23:26,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:26,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 20:23:26,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:26,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:26,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:26,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:26,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:27,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:27,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:23:27,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:27,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-09-24 20:23:27,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:27,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:27,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:27,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:23:27,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:27,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:27,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:27,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:27,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:27,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:27,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:27,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:23:27,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:27,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:27,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:27,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:27,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:27,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:23:27,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:27,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:27,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:27,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:27,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:27,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:23:27,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:27,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:27,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:27,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:27,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:27,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 20:23:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:27,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:27,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:27,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:27,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:27,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:23:27,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:27,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:27,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:27,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:27,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:27,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 20:23:27,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:27,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:27,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:27,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:27,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:27,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:27,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:27,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:28,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:28,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:28,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:29,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:29,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:29,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:29,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:32,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:32,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 20:23:32,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-24 20:23:32,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 20:23:32,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:32,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:23:32,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:23:32,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 20:23:32,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:32,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:32,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:32,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:32,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:32,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:32,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:32,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:32,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:36,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:36,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:23:36,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 20:23:36,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4328 [2020-09-24 20:23:36,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:36,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:23:36,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:36,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 20:23:36,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:36,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:36,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:36,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:36,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:36,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:36,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:36,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:23:36,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:23:36,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-09-24 20:23:36,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:36,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:36,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:36,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:23:36,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:36,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:36,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:36,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:36,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:36,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:36,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:36,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:36,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 20:23:36,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:36,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:36,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:36,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:36,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:36,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:23:36,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:36,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:36,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:36,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:36,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:36,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:23:36,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:36,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:36,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:36,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:23:36,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:36,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 20:23:36,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:36,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:36,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:36,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:36,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:36,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:23:36,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:36,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:36,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:36,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:36,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:36,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 20:23:36,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:36,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:36,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:36,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:36,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:36,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:23:36,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:36,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:36,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:36,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:36,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:36,887 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 155 proven. 179 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2020-09-24 20:23:36,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435461783] [2020-09-24 20:23:36,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:36,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 20:23:36,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383209533] [2020-09-24 20:23:36,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 20:23:36,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:36,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 20:23:36,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-09-24 20:23:36,890 INFO L87 Difference]: Start difference. First operand 74 states and 97 transitions. Second operand 13 states. [2020-09-24 20:23:37,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:37,297 INFO L93 Difference]: Finished difference Result 156 states and 232 transitions. [2020-09-24 20:23:37,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 20:23:37,299 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 125 [2020-09-24 20:23:37,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:37,302 INFO L225 Difference]: With dead ends: 156 [2020-09-24 20:23:37,302 INFO L226 Difference]: Without dead ends: 77 [2020-09-24 20:23:37,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2020-09-24 20:23:37,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-24 20:23:37,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 67. [2020-09-24 20:23:37,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-24 20:23:37,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 76 transitions. [2020-09-24 20:23:37,310 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 76 transitions. Word has length 125 [2020-09-24 20:23:37,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:37,311 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 76 transitions. [2020-09-24 20:23:37,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 20:23:37,311 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 76 transitions. [2020-09-24 20:23:37,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-24 20:23:37,312 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:37,313 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:37,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 20:23:37,313 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:37,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:37,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1005193447, now seen corresponding path program 4 times [2020-09-24 20:23:37,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:37,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254513481] [2020-09-24 20:23:37,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:37,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:37,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:37,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:37,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:37,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:39,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:42,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:42,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 20:23:42,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:23:42,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 20:23:42,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:42,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:23:42,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 20:23:42,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-24 20:23:42,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:42,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:42,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:42,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:42,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:42,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:42,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:42,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:42,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:42,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:42,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:42,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:42,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:42,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 20:23:42,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:42,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:42,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:42,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:42,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:42,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:47,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:47,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-24 20:23:47,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:23:47,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 20:23:47,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:47,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:23:47,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:47,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-24 20:23:47,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:47,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:47,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:47,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:47,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:47,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:49,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:49,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:23:49,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:23:49,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1794 [2020-09-24 20:23:49,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:49,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:23:49,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:49,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 20:23:49,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:49,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:49,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:49,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:49,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:49,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:49,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:23:49,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:49,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-24 20:23:49,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:49,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:49,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:49,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:23:49,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:49,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:49,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:49,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:49,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:49,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:49,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:49,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:23:49,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:49,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:49,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:49,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:49,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:49,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:23:49,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:49,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:49,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:49,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:49,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:49,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:23:49,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:49,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:49,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:49,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:49,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:49,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 20:23:49,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:49,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:49,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:49,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:49,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:49,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:23:49,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:49,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:49,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:49,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:49,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:49,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 20:23:49,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:49,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:49,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:49,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:23:49,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:49,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 20:23:49,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:49,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:49,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:49,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 20:23:49,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:49,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:49,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:49,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:49,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:49,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:49,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:49,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:23:49,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:49,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:49,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:49,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:49,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:49,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:23:49,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:49,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:49,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:49,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:49,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:49,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:23:49,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:49,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:49,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:49,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:49,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:49,533 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 24 proven. 107 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-09-24 20:23:49,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254513481] [2020-09-24 20:23:49,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:49,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 20:23:49,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57292367] [2020-09-24 20:23:49,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 20:23:49,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:49,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 20:23:49,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:23:49,537 INFO L87 Difference]: Start difference. First operand 67 states and 76 transitions. Second operand 9 states. [2020-09-24 20:23:49,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:49,694 INFO L93 Difference]: Finished difference Result 83 states and 94 transitions. [2020-09-24 20:23:49,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 20:23:49,695 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-09-24 20:23:49,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:49,697 INFO L225 Difference]: With dead ends: 83 [2020-09-24 20:23:49,697 INFO L226 Difference]: Without dead ends: 77 [2020-09-24 20:23:49,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-09-24 20:23:49,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-24 20:23:49,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 73. [2020-09-24 20:23:49,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-24 20:23:49,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2020-09-24 20:23:49,705 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 89 [2020-09-24 20:23:49,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:49,706 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2020-09-24 20:23:49,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 20:23:49,706 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2020-09-24 20:23:49,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-24 20:23:49,708 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:49,708 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 15, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:49,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 20:23:49,708 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:49,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:49,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1759669632, now seen corresponding path program 5 times [2020-09-24 20:23:49,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:49,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684373016] [2020-09-24 20:23:49,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:49,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:49,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:49,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:50,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:52,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:52,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:52,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:52,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:52,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:53,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:53,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:53,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:53,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:54,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:54,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:54,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:54,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-09-24 20:23:54,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-24 20:23:54,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-24 20:23:54,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:54,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:23:54,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 20:23:54,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-24 20:23:54,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:54,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:54,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:54,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:54,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:54,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:54,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:54,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:54,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:54,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:54,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:54,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:54,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:54,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 20:23:54,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:54,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking...