/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/fibo_5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:25:18,686 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:25:18,690 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:25:18,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:25:18,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:25:18,717 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:25:18,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:25:18,720 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:25:18,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:25:18,722 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:25:18,723 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:25:18,724 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:25:18,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:25:18,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:25:18,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:25:18,728 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:25:18,730 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:25:18,731 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:25:18,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:25:18,735 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:25:18,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:25:18,738 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:25:18,739 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:25:18,740 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:25:18,742 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:25:18,743 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:25:18,743 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:25:18,744 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:25:18,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:25:18,745 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:25:18,746 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:25:18,747 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:25:18,748 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:25:18,749 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:25:18,750 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:25:18,750 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:25:18,751 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:25:18,752 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:25:18,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:25:18,753 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:25:18,754 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:25:18,755 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 20:25:18,780 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:25:18,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:25:18,781 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:25:18,782 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:25:18,782 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:25:18,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:25:18,782 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:25:18,782 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:25:18,783 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:25:18,783 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:25:18,783 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:25:18,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:25:18,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:25:18,784 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:25:18,784 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:25:18,784 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:25:18,784 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:25:18,784 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:25:18,785 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:25:18,785 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:25:18,785 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:25:18,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:25:18,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:25:18,786 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:25:18,786 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:25:18,786 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:25:18,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:25:18,786 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:25:18,787 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:25:18,787 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 20:25:19,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:25:19,279 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:25:19,283 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:25:19,285 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:25:19,286 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:25:19,287 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_5-2.c [2020-09-24 20:25:19,363 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e56a848fd/1d5c183995874984812f83cb6de3bf5c/FLAG1b5cd7c23 [2020-09-24 20:25:19,860 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:25:19,861 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_5-2.c [2020-09-24 20:25:19,868 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e56a848fd/1d5c183995874984812f83cb6de3bf5c/FLAG1b5cd7c23 [2020-09-24 20:25:20,234 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e56a848fd/1d5c183995874984812f83cb6de3bf5c [2020-09-24 20:25:20,250 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:25:20,257 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:25:20,259 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:25:20,259 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:25:20,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:25:20,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:25:20" (1/1) ... [2020-09-24 20:25:20,270 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@265f99a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:20, skipping insertion in model container [2020-09-24 20:25:20,270 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:25:20" (1/1) ... [2020-09-24 20:25:20,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:25:20,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:25:20,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:25:20,545 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:25:20,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:25:20,574 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:25:20,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:20 WrapperNode [2020-09-24 20:25:20,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:25:20,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:25:20,576 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:25:20,576 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:25:20,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:20" (1/1) ... [2020-09-24 20:25:20,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:20" (1/1) ... [2020-09-24 20:25:20,672 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:20" (1/1) ... [2020-09-24 20:25:20,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:20" (1/1) ... [2020-09-24 20:25:20,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:20" (1/1) ... [2020-09-24 20:25:20,683 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:20" (1/1) ... [2020-09-24 20:25:20,684 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:20" (1/1) ... [2020-09-24 20:25:20,686 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:25:20,686 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:25:20,686 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:25:20,686 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:25:20,687 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:20" (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 20:25:20,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:25:20,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:25:20,763 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-24 20:25:20,763 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:25:20,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:25:20,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:25:20,764 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-24 20:25:20,764 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:25:20,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:25:20,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:25:20,971 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:25:20,972 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 20:25:20,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:25:20 BoogieIcfgContainer [2020-09-24 20:25:20,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:25:20,996 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:25:20,996 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:25:21,001 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:25:21,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:25:20" (1/3) ... [2020-09-24 20:25:21,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac4fbac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:25:21, skipping insertion in model container [2020-09-24 20:25:21,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:20" (2/3) ... [2020-09-24 20:25:21,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac4fbac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:25:21, skipping insertion in model container [2020-09-24 20:25:21,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:25:20" (3/3) ... [2020-09-24 20:25:21,013 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_5-2.c [2020-09-24 20:25:21,027 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:25:21,064 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:25:21,087 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:25:21,112 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:25:21,112 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:25:21,113 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:25:21,113 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:25:21,113 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:25:21,114 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:25:21,114 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:25:21,114 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:25:21,133 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-24 20:25:21,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 20:25:21,140 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:25:21,141 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:25:21,142 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:25:21,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:25:21,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-24 20:25:21,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:25:21,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604729656] [2020-09-24 20:25:21,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:25:21,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:21,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:21,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:21,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:21,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 20:25:21,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:25:21,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-09-24 20:25:21,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:21,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:25:21,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 20:25:21,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:25:21,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 20:25:21,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:25:21,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:21,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:21,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:21,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:25:21,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:21,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:25:21,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:21,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:25:21,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:21,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:25:21,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:21,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:25:21,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:21,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:21,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:21,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:25:21,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:21,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:25:21,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:21,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:25:21,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:21,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:25:21,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:21,670 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 20:25:21,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604729656] [2020-09-24 20:25:21,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:25:21,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:25:21,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394050872] [2020-09-24 20:25:21,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:25:21,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:25:21,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:25:21,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:25:21,707 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-24 20:25:21,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:25:21,812 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-24 20:25:21,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:25:21,815 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 20:25:21,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:25:21,829 INFO L225 Difference]: With dead ends: 44 [2020-09-24 20:25:21,829 INFO L226 Difference]: Without dead ends: 28 [2020-09-24 20:25:21,833 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 20:25:21,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-24 20:25:21,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-24 20:25:21,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 20:25:21,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 20:25:21,884 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-24 20:25:21,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:25:21,885 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 20:25:21,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:25:21,885 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 20:25:21,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 20:25:21,888 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:25:21,888 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:25:21,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:25:21,889 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:25:21,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:25:21,889 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-24 20:25:21,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:25:21,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194044426] [2020-09-24 20:25:21,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:25:21,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:21,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:21,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:22,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:22,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 20:25:22,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:25:22,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-09-24 20:25:22,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:22,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:25:22,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 20:25:22,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:25:22,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:22,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:25:22,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:22,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:22,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:22,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:25:22,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:22,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:25:22,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:22,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:25:22,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:22,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:25:22,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:22,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:25:22,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:22,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:22,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:22,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:25:22,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:22,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 20:25:22,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:22,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:25:22,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:22,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:25:22,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:22,168 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 20:25:22,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194044426] [2020-09-24 20:25:22,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:25:22,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:25:22,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319456631] [2020-09-24 20:25:22,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:25:22,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:25:22,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:25:22,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:25:22,177 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-24 20:25:22,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:25:22,219 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-24 20:25:22,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:25:22,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 20:25:22,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:25:22,222 INFO L225 Difference]: With dead ends: 36 [2020-09-24 20:25:22,223 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 20:25:22,224 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 20:25:22,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 20:25:22,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-24 20:25:22,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 20:25:22,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 20:25:22,232 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-24 20:25:22,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:25:22,233 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 20:25:22,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:25:22,233 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 20:25:22,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 20:25:22,234 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:25:22,235 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:25:22,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:25:22,235 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:25:22,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:25:22,236 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-24 20:25:22,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:25:22,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1638591516] [2020-09-24 20:25:22,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:25:22,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:22,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:22,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:22,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:22,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:24,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:24,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 20:25:24,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:25:24,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1855 [2020-09-24 20:25:24,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:24,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:25:24,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 20:25:24,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 20:25:24,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:24,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:25:24,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:24,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:24,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:24,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:25:24,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:24,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:25:24,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:24,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:25:24,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:24,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:25:24,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:24,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:25:24,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:24,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:24,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:24,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:24,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 20:25:24,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:25:24,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 335 [2020-09-24 20:25:24,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:24,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:25:24,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:24,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 20:25:24,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:24,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:25:24,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:24,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:24,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:24,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:25:24,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:24,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:25:24,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:24,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:25:24,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:24,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:25:24,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:24,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:25:24,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:24,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:24,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:24,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:25:24,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:24,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 20:25:24,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:24,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:25:24,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:24,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:25:24,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:24,615 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-24 20:25:24,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1638591516] [2020-09-24 20:25:24,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:25:24,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 20:25:24,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945356578] [2020-09-24 20:25:24,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 20:25:24,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:25:24,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 20:25:24,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 20:25:24,622 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-09-24 20:25:24,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:25:24,727 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2020-09-24 20:25:24,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 20:25:24,728 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-24 20:25:24,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:25:24,730 INFO L225 Difference]: With dead ends: 48 [2020-09-24 20:25:24,731 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 20:25:24,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:25:24,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 20:25:24,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2020-09-24 20:25:24,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-24 20:25:24,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-09-24 20:25:24,742 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 33 [2020-09-24 20:25:24,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:25:24,743 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-09-24 20:25:24,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 20:25:24,743 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-09-24 20:25:24,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 20:25:24,745 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:25:24,745 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:25:24,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:25:24,746 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:25:24,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:25:24,746 INFO L82 PathProgramCache]: Analyzing trace with hash 795081563, now seen corresponding path program 1 times [2020-09-24 20:25:24,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:25:24,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41908381] [2020-09-24 20:25:24,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:25:24,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:24,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:24,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:24,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:24,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:24,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:25,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:28,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:28,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:25:28,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 20:25:28,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3730 [2020-09-24 20:25:28,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:28,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:25:28,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 20:25:28,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 20:25:28,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:28,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:25:28,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:28,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:28,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:28,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:25:28,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:28,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:25:28,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:28,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:25:28,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:28,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:25:28,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:28,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:25:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:28,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:28,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:28,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:28,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:29,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:29,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:25:29,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:25:29,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-09-24 20:25:29,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:29,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:25:29,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:29,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:25:29,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:29,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:25:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:29,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:29,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:29,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:25:29,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:29,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 20:25:29,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:29,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:25:29,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:29,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:25:29,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:29,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:25:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:29,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:29,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:29,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:25:29,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:29,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 20:25:29,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:29,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:25:29,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:29,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:25:29,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:29,678 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 20:25:29,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41908381] [2020-09-24 20:25:29,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:25:29,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 20:25:29,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988898908] [2020-09-24 20:25:29,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 20:25:29,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:25:29,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 20:25:29,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:25:29,683 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 9 states. [2020-09-24 20:25:29,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:25:29,805 INFO L93 Difference]: Finished difference Result 60 states and 77 transitions. [2020-09-24 20:25:29,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 20:25:29,808 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-09-24 20:25:29,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:25:29,814 INFO L225 Difference]: With dead ends: 60 [2020-09-24 20:25:29,814 INFO L226 Difference]: Without dead ends: 54 [2020-09-24 20:25:29,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:25:29,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-24 20:25:29,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 44. [2020-09-24 20:25:29,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-24 20:25:29,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 58 transitions. [2020-09-24 20:25:29,844 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 58 transitions. Word has length 34 [2020-09-24 20:25:29,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:25:29,844 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 58 transitions. [2020-09-24 20:25:29,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 20:25:29,845 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 58 transitions. [2020-09-24 20:25:29,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 20:25:29,852 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:25:29,852 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:25:29,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:25:29,853 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:25:29,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:25:29,853 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 2 times [2020-09-24 20:25:29,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:25:29,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898549357] [2020-09-24 20:25:29,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:25:29,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:29,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:29,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:30,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:30,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:30,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:25:30,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:25:30,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 937 [2020-09-24 20:25:30,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:30,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:25:30,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 20:25:30,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 20:25:30,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:30,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:25:30,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:30,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:30,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:30,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:25:30,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:30,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:25:30,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:30,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:25:30,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:30,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:25:30,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:30,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:25:30,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:30,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:30,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:30,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:25:30,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:30,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-24 20:25:30,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:30,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:25:30,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:30,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:25:30,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:30,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:25:30,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:30,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:30,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:30,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:25:30,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:30,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 20:25:30,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:30,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:25:30,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:30,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:25:30,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:30,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:25:30,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:30,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:30,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:30,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:25:30,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:30,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 20:25:30,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:30,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:25:30,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:30,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:25:30,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:31,007 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 20:25:31,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898549357] [2020-09-24 20:25:31,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:25:31,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 20:25:31,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487848180] [2020-09-24 20:25:31,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:25:31,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:25:31,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:25:31,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:25:31,010 INFO L87 Difference]: Start difference. First operand 44 states and 58 transitions. Second operand 8 states. [2020-09-24 20:25:31,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:25:31,113 INFO L93 Difference]: Finished difference Result 76 states and 113 transitions. [2020-09-24 20:25:31,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 20:25:31,114 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-09-24 20:25:31,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:25:31,116 INFO L225 Difference]: With dead ends: 76 [2020-09-24 20:25:31,116 INFO L226 Difference]: Without dead ends: 70 [2020-09-24 20:25:31,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:25:31,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-24 20:25:31,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 54. [2020-09-24 20:25:31,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 20:25:31,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 80 transitions. [2020-09-24 20:25:31,132 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 80 transitions. Word has length 34 [2020-09-24 20:25:31,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:25:31,133 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 80 transitions. [2020-09-24 20:25:31,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:25:31,133 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 80 transitions. [2020-09-24 20:25:31,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 20:25:31,135 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:25:31,136 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:25:31,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:25:31,136 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:25:31,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:25:31,137 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-24 20:25:31,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:25:31,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1242607990] [2020-09-24 20:25:31,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:25:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:31,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:31,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:31,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:31,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:31,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:32,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:32,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 20:25:32,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:25:32,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1445 [2020-09-24 20:25:32,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:32,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:25:32,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 20:25:32,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 20:25:32,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:32,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:25:32,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:32,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:32,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:32,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:25:32,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:32,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:25:32,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:32,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:25:32,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:32,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:25:32,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:32,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:25:32,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:32,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:32,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:32,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:33,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:33,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 20:25:33,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:25:33,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 444 [2020-09-24 20:25:33,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:33,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:25:33,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:33,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 20:25:33,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:33,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:25:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:33,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:33,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:33,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:25:33,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:33,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:25:33,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:33,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:25:33,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:33,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:25:33,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:33,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:25:33,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:33,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:33,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:33,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:25:33,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:33,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 20:25:33,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:33,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:25:33,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:33,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:25:33,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:33,165 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-24 20:25:33,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1242607990] [2020-09-24 20:25:33,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:25:33,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 20:25:33,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718119277] [2020-09-24 20:25:33,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:25:33,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:25:33,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:25:33,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:25:33,167 INFO L87 Difference]: Start difference. First operand 54 states and 80 transitions. Second operand 8 states. [2020-09-24 20:25:33,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:25:33,291 INFO L93 Difference]: Finished difference Result 76 states and 113 transitions. [2020-09-24 20:25:33,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 20:25:33,293 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-09-24 20:25:33,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:25:33,296 INFO L225 Difference]: With dead ends: 76 [2020-09-24 20:25:33,296 INFO L226 Difference]: Without dead ends: 70 [2020-09-24 20:25:33,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:25:33,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-24 20:25:33,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 62. [2020-09-24 20:25:33,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-24 20:25:33,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 99 transitions. [2020-09-24 20:25:33,323 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 99 transitions. Word has length 35 [2020-09-24 20:25:33,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:25:33,323 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 99 transitions. [2020-09-24 20:25:33,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:25:33,324 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 99 transitions. [2020-09-24 20:25:33,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 20:25:33,332 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:25:33,332 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 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 20:25:33,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:25:33,332 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:25:33,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:25:33,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1485744477, now seen corresponding path program 3 times [2020-09-24 20:25:33,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:25:33,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939098471] [2020-09-24 20:25:33,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:25:33,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:33,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:33,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:33,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:33,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:33,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:33,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:33,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:37,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:38,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:38,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 20:25:38,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 20:25:38,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 20:25:38,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:38,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:25:38,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 20:25:38,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 20:25:38,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:38,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:25:38,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:38,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:38,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:38,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:25:38,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:38,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:25:38,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:38,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:25:38,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:38,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:25:38,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:38,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:25:38,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:38,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:38,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:38,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:38,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:38,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:40,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:40,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 20:25:40,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:25:40,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1697 [2020-09-24 20:25:40,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:40,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:25:40,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:40,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-24 20:25:40,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:40,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:25:40,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:40,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:40,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:40,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:25:40,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:40,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 20:25:40,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:40,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:25:40,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:40,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:25:40,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:40,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:25:40,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:40,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:40,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:40,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:25:40,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:40,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-24 20:25:40,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:40,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:25:40,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:40,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 20:25:40,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:40,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:25:40,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:40,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:40,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:40,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:25:40,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:40,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:25:40,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:40,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:25:40,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:40,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:25:40,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:40,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:25:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:40,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:40,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:40,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:25:40,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:40,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 20:25:40,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:40,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:25:40,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:40,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:25:40,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:40,344 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-09-24 20:25:40,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939098471] [2020-09-24 20:25:40,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:25:40,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 20:25:40,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899884296] [2020-09-24 20:25:40,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 20:25:40,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:25:40,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 20:25:40,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:25:40,347 INFO L87 Difference]: Start difference. First operand 62 states and 99 transitions. Second operand 11 states. [2020-09-24 20:25:40,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:25:40,642 INFO L93 Difference]: Finished difference Result 120 states and 200 transitions. [2020-09-24 20:25:40,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 20:25:40,644 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 51 [2020-09-24 20:25:40,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:25:40,649 INFO L225 Difference]: With dead ends: 120 [2020-09-24 20:25:40,649 INFO L226 Difference]: Without dead ends: 114 [2020-09-24 20:25:40,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2020-09-24 20:25:40,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-24 20:25:40,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 60. [2020-09-24 20:25:40,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-24 20:25:40,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 92 transitions. [2020-09-24 20:25:40,699 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 92 transitions. Word has length 51 [2020-09-24 20:25:40,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:25:40,700 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 92 transitions. [2020-09-24 20:25:40,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 20:25:40,700 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 92 transitions. [2020-09-24 20:25:40,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-24 20:25:40,705 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:25:40,705 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:25:40,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 20:25:40,706 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:25:40,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:25:40,712 INFO L82 PathProgramCache]: Analyzing trace with hash -538497119, now seen corresponding path program 2 times [2020-09-24 20:25:40,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:25:40,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161928624] [2020-09-24 20:25:40,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:25:40,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:40,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:40,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:40,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:40,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:40,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:40,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:41,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:41,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:43,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:44,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:45,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:45,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-24 20:25:45,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 20:25:45,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 20:25:45,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:45,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:25:45,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 20:25:45,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-24 20:25:45,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:45,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:25:45,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:45,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:45,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:45,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:25:45,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:45,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:25:45,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:45,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:25:45,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:45,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:25:45,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:45,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:25:45,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:45,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:45,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:45,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:45,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:45,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:46,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:46,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:46,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:50,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:50,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 20:25:50,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 20:25:50,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4350 [2020-09-24 20:25:50,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:50,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:25:50,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:50,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 20:25:50,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:50,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:25:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:50,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:50,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:50,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:25:50,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:50,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:25:50,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:50,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:25:50,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:50,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:25:50,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:50,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:25:50,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:50,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:50,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:50,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:50,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:50,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 20:25:50,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:25:50,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 413 [2020-09-24 20:25:50,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:50,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:25:50,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:50,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:25:50,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:50,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:25:50,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:50,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:50,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:50,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:25:50,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:50,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:25:50,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:50,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:25:50,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:50,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:25:50,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:50,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:25:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:50,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:50,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:50,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:25:50,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:50,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 20:25:50,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:50,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:25:50,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:50,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:25:50,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:50,705 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-24 20:25:50,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161928624] [2020-09-24 20:25:50,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:25:50,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 20:25:50,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136334806] [2020-09-24 20:25:50,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 20:25:50,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:25:50,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 20:25:50,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:25:50,707 INFO L87 Difference]: Start difference. First operand 60 states and 92 transitions. Second operand 11 states. [2020-09-24 20:25:50,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:25:50,852 INFO L93 Difference]: Finished difference Result 96 states and 158 transitions. [2020-09-24 20:25:50,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 20:25:50,852 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 53 [2020-09-24 20:25:50,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:25:50,854 INFO L225 Difference]: With dead ends: 96 [2020-09-24 20:25:50,854 INFO L226 Difference]: Without dead ends: 90 [2020-09-24 20:25:50,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-09-24 20:25:50,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-24 20:25:50,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 70. [2020-09-24 20:25:50,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-24 20:25:50,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 120 transitions. [2020-09-24 20:25:50,866 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 120 transitions. Word has length 53 [2020-09-24 20:25:50,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:25:50,868 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 120 transitions. [2020-09-24 20:25:50,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 20:25:50,868 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 120 transitions. [2020-09-24 20:25:50,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 20:25:50,870 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:25:50,870 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:25:50,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 20:25:50,870 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:25:50,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:25:50,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1240721474, now seen corresponding path program 4 times [2020-09-24 20:25:50,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:25:50,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201480777] [2020-09-24 20:25:50,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:25:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:50,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:50,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:50,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:50,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:51,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:51,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:51,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:51,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:51,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:51,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:55,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:55,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:55,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 20:25:55,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 20:25:55,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 20:25:55,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:55,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:25:55,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 20:25:55,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-24 20:25:55,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:55,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:25:55,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:55,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:55,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:55,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:25:55,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:55,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:25:55,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:55,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:25:55,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:55,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:25:55,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:55,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:25:55,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:55,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:55,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:55,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:56,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:56,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:56,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:56,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:56,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:57,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:00,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:00,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:26:00,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 20:26:00,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 20:26:00,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:00,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:26:00,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:00,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 20:26:00,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:00,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:26:00,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:00,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:00,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:00,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:00,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:00,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:26:00,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:00,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:00,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:00,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:00,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:00,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:26:00,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:00,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:01,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:01,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:01,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:01,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 20:26:01,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:26:01,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-09-24 20:26:01,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:01,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:26:01,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:01,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:26:01,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:01,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:26:01,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:01,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:01,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:01,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:26:01,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:01,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:26:01,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:01,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:01,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:01,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:26:01,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:01,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:26:01,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:01,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:01,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:01,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:26:01,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:01,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:26:01,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:01,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:26:01,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:01,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:26:01,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:01,304 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-24 20:26:01,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201480777] [2020-09-24 20:26:01,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:01,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 20:26:01,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736275601] [2020-09-24 20:26:01,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 20:26:01,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:01,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 20:26:01,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-24 20:26:01,307 INFO L87 Difference]: Start difference. First operand 70 states and 120 transitions. Second operand 10 states. [2020-09-24 20:26:01,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:01,442 INFO L93 Difference]: Finished difference Result 122 states and 190 transitions. [2020-09-24 20:26:01,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 20:26:01,442 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-09-24 20:26:01,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:01,444 INFO L225 Difference]: With dead ends: 122 [2020-09-24 20:26:01,445 INFO L226 Difference]: Without dead ends: 116 [2020-09-24 20:26:01,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-09-24 20:26:01,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-09-24 20:26:01,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 76. [2020-09-24 20:26:01,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-24 20:26:01,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 132 transitions. [2020-09-24 20:26:01,458 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 132 transitions. Word has length 52 [2020-09-24 20:26:01,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:01,458 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 132 transitions. [2020-09-24 20:26:01,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 20:26:01,459 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 132 transitions. [2020-09-24 20:26:01,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-24 20:26:01,460 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:01,460 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 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 20:26:01,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 20:26:01,461 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:01,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:01,461 INFO L82 PathProgramCache]: Analyzing trace with hash 426450403, now seen corresponding path program 5 times [2020-09-24 20:26:01,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:01,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142995551] [2020-09-24 20:26:01,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:01,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:01,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:01,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:01,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:01,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:01,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:01,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:02,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:02,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:02,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:02,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:02,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:02,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:02,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:06,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:06,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 20:26:06,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-24 20:26:06,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 20:26:06,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:06,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:26:06,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 20:26:06,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 20:26:06,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:06,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:06,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:06,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:06,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:06,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:06,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:06,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:26:06,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:06,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:06,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:06,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:06,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:06,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:26:06,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:06,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:06,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:06,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:06,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:06,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:06,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:06,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:06,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:06,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:08,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:08,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:08,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:08,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:08,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:11,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:11,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 20:26:11,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-24 20:26:11,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 20:26:11,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:11,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:26:11,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 20:26:11,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 20:26:11,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:11,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:26:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:11,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:11,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:11,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:26:11,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:11,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:26:11,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:11,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:26:11,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:11,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:26:11,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:11,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:26:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:11,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:11,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:11,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:11,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:11,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:11,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:11,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:11,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:13,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:13,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:13,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:13,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:13,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:13,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking...