/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-simple/id2_b5_o10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:25:48,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:25:48,630 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:25:48,674 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:25:48,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:25:48,683 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:25:48,685 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:25:48,689 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:25:48,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:25:48,695 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:25:48,696 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:25:48,697 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:25:48,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:25:48,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:25:48,703 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:25:48,704 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:25:48,706 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:25:48,707 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:25:48,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:25:48,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:25:48,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:25:48,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:25:48,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:25:48,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:25:48,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:25:48,736 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:25:48,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:25:48,738 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:25:48,738 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:25:48,739 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:25:48,739 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:25:48,740 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:25:48,741 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:25:48,742 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:25:48,743 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:25:48,743 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:25:48,744 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:25:48,744 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:25:48,745 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:25:48,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:25:48,746 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:25:48,747 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 20:25:48,774 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:25:48,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:25:48,775 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:25:48,776 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:25:48,776 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:25:48,776 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:25:48,776 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:25:48,777 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:25:48,777 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:25:48,777 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:25:48,777 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:25:48,777 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:25:48,778 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:25:48,778 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:25:48,778 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:25:48,778 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:25:48,778 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:25:48,779 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:25:48,779 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:25:48,779 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:25:48,779 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:25:48,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:25:48,780 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:25:48,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:25:48,780 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:25:48,780 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:25:48,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:25:48,781 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:25:48,781 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:25:48,781 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 20:25:49,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:25:49,259 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:25:49,266 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:25:49,267 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:25:49,268 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:25:49,269 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id2_b5_o10.c [2020-09-24 20:25:49,343 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bc94a510/1b2de7e6f1b649079da082eac576351e/FLAG751a626e6 [2020-09-24 20:25:49,905 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:25:49,906 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id2_b5_o10.c [2020-09-24 20:25:49,914 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bc94a510/1b2de7e6f1b649079da082eac576351e/FLAG751a626e6 [2020-09-24 20:25:50,235 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bc94a510/1b2de7e6f1b649079da082eac576351e [2020-09-24 20:25:50,250 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:25:50,255 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:25:50,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:25:50,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:25:50,262 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:25:50,263 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:25:50" (1/1) ... [2020-09-24 20:25:50,269 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e48a7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:50, skipping insertion in model container [2020-09-24 20:25:50,269 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:25:50" (1/1) ... [2020-09-24 20:25:50,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:25:50,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:25:50,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:25:50,584 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:25:50,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:25:50,619 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:25:50,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:50 WrapperNode [2020-09-24 20:25:50,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:25:50,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:25:50,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:25:50,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:25:50,635 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:50" (1/1) ... [2020-09-24 20:25:50,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:50" (1/1) ... [2020-09-24 20:25:50,642 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:50" (1/1) ... [2020-09-24 20:25:50,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:50" (1/1) ... [2020-09-24 20:25:50,729 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:50" (1/1) ... [2020-09-24 20:25:50,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:50" (1/1) ... [2020-09-24 20:25:50,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:50" (1/1) ... [2020-09-24 20:25:50,735 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:25:50,736 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:25:50,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:25:50,736 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:25:50,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:25:50,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:25:50,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:25:50,820 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-24 20:25:50,820 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2020-09-24 20:25:50,820 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:25:50,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-24 20:25:50,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:25:50,821 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-24 20:25:50,821 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2020-09-24 20:25:50,821 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:25:50,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:25:50,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:25:51,071 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:25:51,072 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 20:25:51,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:25:51 BoogieIcfgContainer [2020-09-24 20:25:51,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:25:51,079 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:25:51,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:25:51,083 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:25:51,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:25:50" (1/3) ... [2020-09-24 20:25:51,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b723a4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:25:51, skipping insertion in model container [2020-09-24 20:25:51,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:50" (2/3) ... [2020-09-24 20:25:51,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b723a4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:25:51, skipping insertion in model container [2020-09-24 20:25:51,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:25:51" (3/3) ... [2020-09-24 20:25:51,087 INFO L109 eAbstractionObserver]: Analyzing ICFG id2_b5_o10.c [2020-09-24 20:25:51,100 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:25:51,111 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:25:51,140 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:25:51,181 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:25:51,181 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:25:51,182 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:25:51,182 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:25:51,182 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:25:51,182 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:25:51,183 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:25:51,183 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:25:51,209 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-09-24 20:25:51,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 20:25:51,219 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:25:51,220 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:25:51,221 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:25:51,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:25:51,229 INFO L82 PathProgramCache]: Analyzing trace with hash 875745540, now seen corresponding path program 1 times [2020-09-24 20:25:51,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:25:51,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014063632] [2020-09-24 20:25:51,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:25:51,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:51,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:51,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:51,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 20:25:51,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:51,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-24 20:25:51,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:51,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:25:51,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 20:25:51,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:25:51,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:25:51,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:25:51,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:51,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:51,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:51,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:25:51,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:51,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:25:51,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:51,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:25:51,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:51,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:25:51,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:51,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:25:51,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:51,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:51,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:51,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:25:51,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:51,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 20:25:51,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:51,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:25:51,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:51,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:25:51,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:51,604 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 20:25:51,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014063632] [2020-09-24 20:25:51,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:25:51,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:25:51,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631713126] [2020-09-24 20:25:51,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:25:51,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:25:51,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:25:51,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:25:51,637 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 5 states. [2020-09-24 20:25:51,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:25:51,743 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2020-09-24 20:25:51,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:25:51,745 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 20:25:51,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:25:51,758 INFO L225 Difference]: With dead ends: 51 [2020-09-24 20:25:51,758 INFO L226 Difference]: Without dead ends: 36 [2020-09-24 20:25:51,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 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 20:25:51,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-24 20:25:51,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-24 20:25:51,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-24 20:25:51,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-09-24 20:25:51,823 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 16 [2020-09-24 20:25:51,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:25:51,824 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-09-24 20:25:51,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:25:51,824 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-09-24 20:25:51,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-24 20:25:51,827 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:25:51,827 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:25:51,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:25:51,828 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:25:51,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:25:51,829 INFO L82 PathProgramCache]: Analyzing trace with hash 71846672, now seen corresponding path program 1 times [2020-09-24 20:25:51,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:25:51,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896840703] [2020-09-24 20:25:51,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:25:51,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:51,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:51,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:52,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:52,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 20:25:52,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:25:52,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 432 [2020-09-24 20:25:52,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:52,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:25:52,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 20:25:52,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 20:25:52,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:25:52,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:25:52,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:52,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:52,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:52,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:25:52,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:52,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:25:52,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:52,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:25:52,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:52,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:25:52,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:52,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:25:52,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:52,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:52,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:52,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 20:25:52,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:52,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-24 20:25:52,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:52,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:25:52,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:52,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 20:25:52,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:52,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:25:52,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:52,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:52,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:52,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:25:52,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:52,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 20:25:52,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:52,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:25:52,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:52,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:25:52,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:25:52,709 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 20:25:52,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896840703] [2020-09-24 20:25:52,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:25:52,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 20:25:52,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789100903] [2020-09-24 20:25:52,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:25:52,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:25:52,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:25:52,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:25:52,721 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 8 states. [2020-09-24 20:25:52,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:25:52,864 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2020-09-24 20:25:52,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 20:25:52,865 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-09-24 20:25:52,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:25:52,866 INFO L225 Difference]: With dead ends: 66 [2020-09-24 20:25:52,867 INFO L226 Difference]: Without dead ends: 44 [2020-09-24 20:25:52,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:25:52,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-24 20:25:52,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-24 20:25:52,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 20:25:52,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-09-24 20:25:52,878 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 25 [2020-09-24 20:25:52,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:25:52,879 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-09-24 20:25:52,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:25:52,879 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-09-24 20:25:52,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 20:25:52,881 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:25:52,881 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:25:52,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:25:52,882 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:25:52,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:25:52,882 INFO L82 PathProgramCache]: Analyzing trace with hash -511991682, now seen corresponding path program 1 times [2020-09-24 20:25:52,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:25:52,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943977493] [2020-09-24 20:25:52,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:25:52,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:52,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:52,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:53,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:53,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:53,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:53,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:25:53,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:25:53,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1022 [2020-09-24 20:25:53,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:53,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:25:53,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-24 20:25:53,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 20:25:53,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:53,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:25:53,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:53,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:53,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:53,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:25:53,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:53,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:25:53,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:53,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:25:53,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:53,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:25:53,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:53,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:25:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:54,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:54,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:54,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:54,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:54,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:25:54,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:25:54,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 490 [2020-09-24 20:25:54,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:54,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:25:54,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:54,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:25:54,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:54,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:25:54,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:54,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:54,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:54,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:54,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 20:25:54,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:25:54,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-24 20:25:54,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:54,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:25:54,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 20:25:54,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:25:54,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:54,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:25:54,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:54,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:54,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:54,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:25:54,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:54,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 20:25:54,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:54,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:25:54,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:54,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:25:54,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:54,773 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 20:25:54,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943977493] [2020-09-24 20:25:54,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:25:54,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 20:25:54,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385809261] [2020-09-24 20:25:54,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 20:25:54,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:25:54,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 20:25:54,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-24 20:25:54,777 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 10 states. [2020-09-24 20:25:54,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:25:54,860 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2020-09-24 20:25:54,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:25:54,861 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2020-09-24 20:25:54,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:25:54,862 INFO L225 Difference]: With dead ends: 69 [2020-09-24 20:25:54,863 INFO L226 Difference]: Without dead ends: 50 [2020-09-24 20:25:54,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:25:54,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-24 20:25:54,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2020-09-24 20:25:54,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-24 20:25:54,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-09-24 20:25:54,872 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 34 [2020-09-24 20:25:54,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:25:54,873 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-09-24 20:25:54,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 20:25:54,873 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-09-24 20:25:54,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 20:25:54,875 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:25:54,875 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:25:54,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:25:54,875 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:25:54,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:25:54,876 INFO L82 PathProgramCache]: Analyzing trace with hash -2109914946, now seen corresponding path program 1 times [2020-09-24 20:25:54,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:25:54,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599690925] [2020-09-24 20:25:54,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:25:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:54,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:54,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:55,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:55,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:55,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:25:55,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:25:55,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-09-24 20:25:55,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:55,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:25:55,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-24 20:25:55,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 20:25:55,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:55,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:25:55,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:55,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:55,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:55,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:25:55,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:55,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:25:55,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:55,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:25:55,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:55,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:25:55,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:55,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:25:55,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:55,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:55,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:55,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:25:55,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:55,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-24 20:25:55,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:55,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:25:55,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:55,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:25:55,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:55,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:25:55,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:55,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:55,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:55,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 20:25:55,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:55,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-24 20:25:55,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:55,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:25:55,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:55,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 20:25:55,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:55,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:25:55,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:55,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:55,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:55,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:25:55,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:55,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 20:25:55,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:55,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:25:55,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:55,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:25:55,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:55,647 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 20:25:55,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599690925] [2020-09-24 20:25:55,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:25:55,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 20:25:55,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833136678] [2020-09-24 20:25:55,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 20:25:55,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:25:55,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 20:25:55,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:25:55,650 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 11 states. [2020-09-24 20:25:55,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:25:55,848 INFO L93 Difference]: Finished difference Result 78 states and 86 transitions. [2020-09-24 20:25:55,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 20:25:55,849 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-09-24 20:25:55,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:25:55,851 INFO L225 Difference]: With dead ends: 78 [2020-09-24 20:25:55,851 INFO L226 Difference]: Without dead ends: 56 [2020-09-24 20:25:55,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-09-24 20:25:55,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-24 20:25:55,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 48. [2020-09-24 20:25:55,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-24 20:25:55,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-09-24 20:25:55,859 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 34 [2020-09-24 20:25:55,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:25:55,860 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-09-24 20:25:55,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 20:25:55,860 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-09-24 20:25:55,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 20:25:55,862 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:25:55,862 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:25:55,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:25:55,863 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:25:55,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:25:55,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1866785798, now seen corresponding path program 1 times [2020-09-24 20:25:55,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:25:55,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824683565] [2020-09-24 20:25:55,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:25:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:55,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:55,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:56,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:56,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:57,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:57,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-24 20:25:57,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:25:57,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1721 [2020-09-24 20:25:57,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:57,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:25:57,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-24 20:25:57,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 20:25:57,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:57,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:25:57,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:57,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:57,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:57,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:25:57,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:57,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:25:57,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:57,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:25:57,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:57,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:25:57,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:57,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:25:57,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:57,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:57,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:58,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:58,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 20:25:58,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:25:58,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 488 [2020-09-24 20:25:58,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:58,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:25:58,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 20:25:58,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 20:25:58,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:58,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:25:58,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:58,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:58,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:58,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:25:58,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:58,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-24 20:25:58,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:58,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:25:58,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 20:25:58,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 20:25:58,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:58,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:25:58,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:58,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:58,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:58,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 20:25:58,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:58,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 20:25:58,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:58,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:25:58,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:58,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 20:25:58,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:58,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:25:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:58,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:58,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:58,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:25:58,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:58,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:25:58,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:58,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:25:58,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:58,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:25:58,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:58,425 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 20:25:58,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824683565] [2020-09-24 20:25:58,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:25:58,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 20:25:58,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143418637] [2020-09-24 20:25:58,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:25:58,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:25:58,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:25:58,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:25:58,428 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 8 states. [2020-09-24 20:25:58,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:25:58,574 INFO L93 Difference]: Finished difference Result 81 states and 88 transitions. [2020-09-24 20:25:58,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 20:25:58,575 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-09-24 20:25:58,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:25:58,576 INFO L225 Difference]: With dead ends: 81 [2020-09-24 20:25:58,577 INFO L226 Difference]: Without dead ends: 62 [2020-09-24 20:25:58,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:25:58,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-24 20:25:58,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 59. [2020-09-24 20:25:58,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-24 20:25:58,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-09-24 20:25:58,586 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 43 [2020-09-24 20:25:58,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:25:58,587 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-09-24 20:25:58,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:25:58,587 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-09-24 20:25:58,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 20:25:58,589 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:25:58,589 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:25:58,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:25:58,589 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:25:58,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:25:58,590 INFO L82 PathProgramCache]: Analyzing trace with hash 830258234, now seen corresponding path program 1 times [2020-09-24 20:25:58,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:25:58,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691817270] [2020-09-24 20:25:58,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:25:58,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:58,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:58,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:58,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:59,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:59,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:59,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-24 20:25:59,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:25:59,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 891 [2020-09-24 20:25:59,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:59,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:25:59,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-24 20:25:59,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 20:25:59,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:59,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:25:59,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:59,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:59,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:59,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:25:59,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:59,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:25:59,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:59,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:25:59,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:59,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:25:59,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:59,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:25:59,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:59,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:59,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:59,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 20:25:59,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:59,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-09-24 20:25:59,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:59,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:25:59,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:59,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 20:25:59,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:59,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:25:59,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:59,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:00,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:00,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:26:00,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:00,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-24 20:26:00,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:00,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:26:00,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:00,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:26:00,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:00,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:00,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:00,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:00,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:00,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 20:26:00,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:00,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 20:26:00,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:00,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:26:00,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:00,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 20:26:00,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:00,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:00,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:00,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:00,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:00,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:00,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:00,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 20:26:00,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:00,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:00,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:00,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:00,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:00,276 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 20:26:00,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1691817270] [2020-09-24 20:26:00,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:00,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 20:26:00,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357193267] [2020-09-24 20:26:00,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 20:26:00,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:00,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 20:26:00,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-09-24 20:26:00,280 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 14 states. [2020-09-24 20:26:00,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:00,605 INFO L93 Difference]: Finished difference Result 90 states and 98 transitions. [2020-09-24 20:26:00,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 20:26:00,606 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 43 [2020-09-24 20:26:00,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:00,608 INFO L225 Difference]: With dead ends: 90 [2020-09-24 20:26:00,608 INFO L226 Difference]: Without dead ends: 68 [2020-09-24 20:26:00,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2020-09-24 20:26:00,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-24 20:26:00,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 54. [2020-09-24 20:26:00,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 20:26:00,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-09-24 20:26:00,616 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 43 [2020-09-24 20:26:00,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:00,616 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-09-24 20:26:00,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 20:26:00,617 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-09-24 20:26:00,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 20:26:00,618 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:00,618 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:00,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:26:00,619 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:00,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:00,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1598367544, now seen corresponding path program 1 times [2020-09-24 20:26:00,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:00,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1837308647] [2020-09-24 20:26:00,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:00,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:00,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:01,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:01,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:03,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:03,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 20:26:03,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:26:03,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2866 [2020-09-24 20:26:03,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:03,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:26:03,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 20:26:03,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 20:26:03,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:03,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:03,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:03,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:03,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:03,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:03,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:03,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:26:03,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:03,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:03,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:03,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:03,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:03,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:26:03,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:03,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:03,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:04,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:04,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:26:04,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:26:04,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 859 [2020-09-24 20:26:04,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:04,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:26:04,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 20:26:04,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 20:26:04,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:04,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:04,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:04,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:04,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:04,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 20:26:04,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:04,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-09-24 20:26:04,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:04,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:26:04,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 20:26:04,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 20:26:04,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:04,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:04,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:04,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:04,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:04,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:26:04,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:04,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-24 20:26:04,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:04,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:26:04,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:04,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:26:04,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:04,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:04,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:04,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:04,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 20:26:04,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:04,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 20:26:04,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:04,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:26:04,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:04,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 20:26:04,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:04,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:04,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:04,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:04,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:04,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:04,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 20:26:04,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:04,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:04,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:04,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:04,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:04,959 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-24 20:26:04,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1837308647] [2020-09-24 20:26:04,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:04,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 20:26:04,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929323056] [2020-09-24 20:26:04,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 20:26:04,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:04,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 20:26:04,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:26:04,963 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 11 states. [2020-09-24 20:26:05,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:05,148 INFO L93 Difference]: Finished difference Result 93 states and 100 transitions. [2020-09-24 20:26:05,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 20:26:05,149 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-09-24 20:26:05,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:05,150 INFO L225 Difference]: With dead ends: 93 [2020-09-24 20:26:05,150 INFO L226 Difference]: Without dead ends: 74 [2020-09-24 20:26:05,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-09-24 20:26:05,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-24 20:26:05,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2020-09-24 20:26:05,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-24 20:26:05,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-09-24 20:26:05,159 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 52 [2020-09-24 20:26:05,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:05,159 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-09-24 20:26:05,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 20:26:05,160 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-09-24 20:26:05,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 20:26:05,161 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:05,161 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:05,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 20:26:05,162 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:05,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:05,162 INFO L82 PathProgramCache]: Analyzing trace with hash 444280, now seen corresponding path program 2 times [2020-09-24 20:26:05,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:05,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [740656060] [2020-09-24 20:26:05,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:05,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:05,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:05,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:05,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:05,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:05,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:06,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:06,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 20:26:06,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:26:06,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1037 [2020-09-24 20:26:06,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:06,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 20:26:06,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 20:26:06,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:26:06,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:06,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:06,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:06,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:06,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:06,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:06,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:06,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:26:06,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:06,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:06,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:06,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:06,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:06,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:26:06,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:06,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:06,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:06,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:26:06,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:06,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-09-24 20:26:06,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:06,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:26:06,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:06,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 20:26:06,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:06,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:06,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:06,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:06,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:06,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 20:26:06,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:06,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-09-24 20:26:06,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:06,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:26:06,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:06,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 20:26:06,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:06,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:06,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:06,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:07,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:07,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:26:07,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:07,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-24 20:26:07,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:07,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:26:07,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:07,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:26:07,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:07,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:07,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:07,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:07,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:07,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 20:26:07,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:07,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-24 20:26:07,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:07,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:26:07,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:07,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 20:26:07,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:07,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:07,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:07,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:07,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:07,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:07,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:07,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:26:07,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:07,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:07,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:07,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:07,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:07,313 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-24 20:26:07,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [740656060] [2020-09-24 20:26:07,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:07,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 20:26:07,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585879545] [2020-09-24 20:26:07,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 20:26:07,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:07,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 20:26:07,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-09-24 20:26:07,317 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 17 states. [2020-09-24 20:26:07,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:07,707 INFO L93 Difference]: Finished difference Result 102 states and 110 transitions. [2020-09-24 20:26:07,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 20:26:07,708 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 52 [2020-09-24 20:26:07,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:07,709 INFO L225 Difference]: With dead ends: 102 [2020-09-24 20:26:07,709 INFO L226 Difference]: Without dead ends: 80 [2020-09-24 20:26:07,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2020-09-24 20:26:07,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-24 20:26:07,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2020-09-24 20:26:07,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-24 20:26:07,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-09-24 20:26:07,721 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 52 [2020-09-24 20:26:07,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:07,722 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-09-24 20:26:07,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 20:26:07,722 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-09-24 20:26:07,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-24 20:26:07,723 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:07,723 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:07,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 20:26:07,723 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:07,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:07,726 INFO L82 PathProgramCache]: Analyzing trace with hash -185860060, now seen corresponding path program 1 times [2020-09-24 20:26:07,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:07,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1363290292] [2020-09-24 20:26:07,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:07,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:07,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:08,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:08,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:11,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:11,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 20:26:11,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:26:11,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3707 [2020-09-24 20:26:11,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:11,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:26:11,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 20:26:11,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 20:26:11,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:11,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:11,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:11,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:11,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:11,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:11,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:11,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:26:11,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:11,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:11,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:11,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:11,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:11,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:26:11,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:11,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:11,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:12,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:12,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-24 20:26:12,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:26:12,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1354 [2020-09-24 20:26:12,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:12,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:26:12,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 20:26:12,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 20:26:12,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:12,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:12,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:12,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:13,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:13,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:26:13,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:13,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-09-24 20:26:13,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:13,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:26:13,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 20:26:13,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 20:26:13,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:13,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:13,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:13,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:13,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:13,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 20:26:13,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:13,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-09-24 20:26:13,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:13,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:26:13,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:13,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 20:26:13,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:13,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:13,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:13,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:13,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:26:13,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:13,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-24 20:26:13,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:13,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:26:13,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:13,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:26:13,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:13,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:13,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:13,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:13,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 20:26:13,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:13,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-24 20:26:13,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:13,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:26:13,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:13,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 20:26:13,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:13,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:13,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:13,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:13,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:13,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:13,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:13,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:26:13,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:13,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:13,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:13,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:13,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:13,786 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-24 20:26:13,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1363290292] [2020-09-24 20:26:13,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:13,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 20:26:13,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798428855] [2020-09-24 20:26:13,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 20:26:13,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:13,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 20:26:13,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-09-24 20:26:13,789 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 14 states. [2020-09-24 20:26:14,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:14,026 INFO L93 Difference]: Finished difference Result 105 states and 112 transitions. [2020-09-24 20:26:14,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 20:26:14,026 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 61 [2020-09-24 20:26:14,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:14,028 INFO L225 Difference]: With dead ends: 105 [2020-09-24 20:26:14,028 INFO L226 Difference]: Without dead ends: 86 [2020-09-24 20:26:14,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2020-09-24 20:26:14,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-09-24 20:26:14,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 83. [2020-09-24 20:26:14,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-24 20:26:14,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-09-24 20:26:14,035 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 61 [2020-09-24 20:26:14,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:14,036 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-09-24 20:26:14,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 20:26:14,036 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-09-24 20:26:14,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-24 20:26:14,037 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:14,037 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:14,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 20:26:14,038 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:14,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:14,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1783783324, now seen corresponding path program 2 times [2020-09-24 20:26:14,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:14,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483556156] [2020-09-24 20:26:14,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:14,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:14,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:14,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:14,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:14,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:14,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:15,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:15,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:15,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 20:26:15,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 20:26:15,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1532 [2020-09-24 20:26:15,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:15,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 20:26:15,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 20:26:15,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 20:26:15,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:15,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:15,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:15,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:15,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:15,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:15,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:15,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:26:15,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:15,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:15,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:15,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:15,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:15,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:26:15,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:15,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:16,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:16,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-24 20:26:16,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:16,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 391 [2020-09-24 20:26:16,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:16,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 20:26:16,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:16,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-24 20:26:16,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:16,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:16,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:16,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:16,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:16,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:26:16,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:16,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-09-24 20:26:16,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:16,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:26:16,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:16,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 20:26:16,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:16,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:16,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:16,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:16,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 20:26:16,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:16,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-24 20:26:16,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:16,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:26:16,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:16,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 20:26:16,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:16,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:16,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:16,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:16,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:16,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:26:16,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:16,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-24 20:26:16,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:16,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:26:16,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:16,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:26:16,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:16,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:16,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:16,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:16,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 20:26:16,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:16,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 20:26:16,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:16,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:26:16,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:16,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 20:26:16,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:17,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:17,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:17,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:17,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:17,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:17,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:26:17,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:17,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:17,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:17,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:17,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:17,097 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-24 20:26:17,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483556156] [2020-09-24 20:26:17,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:17,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-24 20:26:17,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560157070] [2020-09-24 20:26:17,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-24 20:26:17,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:17,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-24 20:26:17,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-09-24 20:26:17,100 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 20 states. [2020-09-24 20:26:17,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:17,655 INFO L93 Difference]: Finished difference Result 116 states and 125 transitions. [2020-09-24 20:26:17,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 20:26:17,659 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 61 [2020-09-24 20:26:17,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:17,660 INFO L225 Difference]: With dead ends: 116 [2020-09-24 20:26:17,660 INFO L226 Difference]: Without dead ends: 94 [2020-09-24 20:26:17,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=81, Invalid=849, Unknown=0, NotChecked=0, Total=930 [2020-09-24 20:26:17,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-24 20:26:17,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 66. [2020-09-24 20:26:17,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-24 20:26:17,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-09-24 20:26:17,668 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 61 [2020-09-24 20:26:17,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:17,668 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-09-24 20:26:17,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-24 20:26:17,668 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-09-24 20:26:17,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-24 20:26:17,669 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:17,670 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:17,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 20:26:17,670 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:17,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:17,671 INFO L82 PathProgramCache]: Analyzing trace with hash 841467122, now seen corresponding path program 2 times [2020-09-24 20:26:17,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:17,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256943609] [2020-09-24 20:26:17,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:17,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:17,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:17,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:18,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:20,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:21,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:21,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 20:26:21,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:26:21,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4285 [2020-09-24 20:26:21,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:21,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 20:26:21,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-24 20:26:21,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:26:21,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:21,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:21,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:21,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:21,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:21,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:21,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:21,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:26:21,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:21,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:21,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:21,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:21,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:21,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:26:21,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:22,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:22,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:23,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:23,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 20:26:23,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:26:23,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-09-24 20:26:23,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:23,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 20:26:23,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-09-24 20:26:23,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:26:23,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:23,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:23,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:23,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:23,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:23,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-24 20:26:23,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:23,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 426 [2020-09-24 20:26:23,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:23,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 20:26:23,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 20:26:23,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:26:23,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:23,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:23,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:23,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:23,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:23,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:26:23,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:23,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-09-24 20:26:23,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:23,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:26:23,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:23,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 20:26:23,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:23,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:23,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:23,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:24,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:24,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 20:26:24,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:24,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-09-24 20:26:24,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:24,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:26:24,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:24,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 20:26:24,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:24,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:24,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:24,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:24,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:24,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:26:24,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:24,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-24 20:26:24,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:24,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:26:24,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:24,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:26:24,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:24,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:24,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:24,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:24,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:24,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 20:26:24,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:24,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 20:26:24,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:24,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:26:24,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:24,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 20:26:24,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:24,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:24,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:24,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:24,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:24,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:24,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:26:24,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:24,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:24,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:24,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:24,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:24,471 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 22 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-24 20:26:24,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256943609] [2020-09-24 20:26:24,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:24,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 20:26:24,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503178271] [2020-09-24 20:26:24,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 20:26:24,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:24,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 20:26:24,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-09-24 20:26:24,476 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 17 states. [2020-09-24 20:26:24,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:24,883 INFO L93 Difference]: Finished difference Result 119 states and 126 transitions. [2020-09-24 20:26:24,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 20:26:24,884 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 70 [2020-09-24 20:26:24,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:24,886 INFO L225 Difference]: With dead ends: 119 [2020-09-24 20:26:24,886 INFO L226 Difference]: Without dead ends: 98 [2020-09-24 20:26:24,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=577, Unknown=0, NotChecked=0, Total=650 [2020-09-24 20:26:24,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-24 20:26:24,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 95. [2020-09-24 20:26:24,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-09-24 20:26:24,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2020-09-24 20:26:24,903 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 70 [2020-09-24 20:26:24,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:24,903 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2020-09-24 20:26:24,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 20:26:24,904 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2020-09-24 20:26:24,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-24 20:26:24,904 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:24,907 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:24,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 20:26:24,907 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:24,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:24,907 INFO L82 PathProgramCache]: Analyzing trace with hash -756456142, now seen corresponding path program 3 times [2020-09-24 20:26:24,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:24,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272999870] [2020-09-24 20:26:24,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:24,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:24,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:25,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:25,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:25,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:26,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:26,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:27,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:28,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:28,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 20:26:28,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 20:26:28,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3737 [2020-09-24 20:26:28,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:28,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 20:26:28,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-24 20:26:28,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:26:28,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:28,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:28,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:28,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:28,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:28,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:28,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:28,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:26:28,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:28,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:28,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:28,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:28,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:28,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:26:28,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:28,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:29,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:29,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:29,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 20:26:29,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:26:29,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 875 [2020-09-24 20:26:29,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:29,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 20:26:29,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:29,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 20:26:29,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:29,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:29,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:29,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:30,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:30,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-24 20:26:30,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:30,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 348 [2020-09-24 20:26:30,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:30,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 20:26:30,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:30,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-24 20:26:30,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:30,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:30,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:30,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:30,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:26:30,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:30,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-09-24 20:26:30,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:30,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:26:30,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:30,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 20:26:30,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:30,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:30,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:30,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:30,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 20:26:30,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:30,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-24 20:26:30,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:30,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:26:30,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:30,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 20:26:30,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:30,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:30,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:30,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:30,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:30,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:26:30,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:30,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-24 20:26:30,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:30,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:26:30,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:30,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:26:30,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:30,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:30,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:30,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:30,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:30,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 20:26:30,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:30,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 20:26:30,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:30,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:26:30,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:30,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 20:26:30,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:30,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:30,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:30,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:30,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:30,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:30,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:30,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:26:30,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:30,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:30,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:30,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:30,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:30,996 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-24 20:26:30,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272999870] [2020-09-24 20:26:30,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:30,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-24 20:26:30,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153673359] [2020-09-24 20:26:30,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-24 20:26:30,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:30,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-24 20:26:30,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-09-24 20:26:30,998 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 23 states. [2020-09-24 20:26:31,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:31,626 INFO L93 Difference]: Finished difference Result 127 states and 134 transitions. [2020-09-24 20:26:31,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 20:26:31,627 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 70 [2020-09-24 20:26:31,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:31,629 INFO L225 Difference]: With dead ends: 127 [2020-09-24 20:26:31,629 INFO L226 Difference]: Without dead ends: 106 [2020-09-24 20:26:31,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=87, Invalid=1035, Unknown=0, NotChecked=0, Total=1122 [2020-09-24 20:26:31,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-24 20:26:31,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 101. [2020-09-24 20:26:31,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-09-24 20:26:31,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2020-09-24 20:26:31,636 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 70 [2020-09-24 20:26:31,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:31,637 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2020-09-24 20:26:31,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-24 20:26:31,637 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2020-09-24 20:26:31,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-24 20:26:31,638 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:31,638 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:31,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 20:26:31,639 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:31,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:31,639 INFO L82 PathProgramCache]: Analyzing trace with hash -242092146, now seen corresponding path program 3 times [2020-09-24 20:26:31,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:31,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056416091] [2020-09-24 20:26:31,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:31,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:31,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:31,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:32,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:32,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:32,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:33,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:33,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:33,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:36,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:36,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-24 20:26:36,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 20:26:36,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 20:26:36,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:36,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 20:26:36,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-24 20:26:36,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:26:36,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:36,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:36,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:36,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:36,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:36,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:36,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:36,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:26:36,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:36,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:36,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:36,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:36,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:36,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:26:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:36,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:37,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:37,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:38,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:38,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 20:26:38,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:26:38,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1866 [2020-09-24 20:26:38,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:38,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 20:26:38,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 20:26:38,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 20:26:38,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:38,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:38,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:38,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:38,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:39,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:39,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 20:26:39,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:26:39,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1009 [2020-09-24 20:26:39,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:39,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 20:26:39,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:39,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 20:26:39,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:39,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:39,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:39,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:40,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:40,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-24 20:26:40,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:40,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-09-24 20:26:40,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:40,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 20:26:40,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:40,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-24 20:26:40,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:40,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:40,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:40,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:40,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:40,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:26:40,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:40,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-09-24 20:26:40,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:40,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:26:40,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:40,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 20:26:40,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:40,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:40,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:40,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:40,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:40,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 20:26:40,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:40,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-24 20:26:40,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:40,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:26:40,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:40,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 20:26:40,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:40,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:40,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:40,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:40,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:40,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:26:40,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:40,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-24 20:26:40,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:40,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:26:40,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:40,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:26:40,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:40,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:40,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:40,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:40,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:40,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 20:26:40,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:40,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 20:26:40,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:40,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:26:40,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:40,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 20:26:40,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:40,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:41,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:41,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:41,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:41,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:41,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:41,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:26:41,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:41,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:41,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:41,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:41,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:41,111 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 9 proven. 51 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-24 20:26:41,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056416091] [2020-09-24 20:26:41,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:41,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-24 20:26:41,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256038219] [2020-09-24 20:26:41,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-24 20:26:41,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:41,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-24 20:26:41,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-09-24 20:26:41,114 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand 23 states.