/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 SequenceOfStatements --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 --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/reducercommutativity/sep60-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 18:30:50,021 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 18:30:50,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 18:30:50,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 18:30:50,072 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 18:30:50,073 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 18:30:50,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 18:30:50,076 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 18:30:50,078 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 18:30:50,079 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 18:30:50,080 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 18:30:50,081 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 18:30:50,082 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 18:30:50,083 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 18:30:50,084 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 18:30:50,085 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 18:30:50,086 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 18:30:50,087 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 18:30:50,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 18:30:50,090 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 18:30:50,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 18:30:50,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 18:30:50,094 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 18:30:50,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 18:30:50,098 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 18:30:50,098 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 18:30:50,098 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 18:30:50,099 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 18:30:50,100 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 18:30:50,100 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 18:30:50,101 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 18:30:50,101 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 18:30:50,102 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 18:30:50,103 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 18:30:50,104 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 18:30:50,104 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 18:30:50,105 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 18:30:50,105 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 18:30:50,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 18:30:50,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 18:30:50,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 18:30:50,108 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 [2020-10-12 18:30:50,132 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 18:30:50,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 18:30:50,136 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 18:30:50,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 18:30:50,137 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 18:30:50,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 18:30:50,137 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 18:30:50,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 18:30:50,137 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 18:30:50,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 18:30:50,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 18:30:50,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 18:30:50,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 18:30:50,142 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 18:30:50,142 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 18:30:50,142 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 18:30:50,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 18:30:50,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 18:30:50,143 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 18:30:50,143 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 18:30:50,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 18:30:50,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 18:30:50,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 18:30:50,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 18:30:50,144 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 18:30:50,144 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 18:30:50,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 18:30:50,145 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 18:30:50,145 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 18:30:50,145 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 -> SequenceOfStatements 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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=true; [2020-10-12 18:30:50,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 18:30:50,522 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 18:30:50,526 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 18:30:50,528 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 18:30:50,529 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 18:30:50,530 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sep60-2.i [2020-10-12 18:30:50,607 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a214394b3/5156f80c530a4f6db9715b2ede026f97/FLAGb24ecbf77 [2020-10-12 18:30:51,103 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 18:30:51,104 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/sep60-2.i [2020-10-12 18:30:51,111 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a214394b3/5156f80c530a4f6db9715b2ede026f97/FLAGb24ecbf77 [2020-10-12 18:30:51,501 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a214394b3/5156f80c530a4f6db9715b2ede026f97 [2020-10-12 18:30:51,511 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 18:30:51,513 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 18:30:51,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 18:30:51,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 18:30:51,518 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 18:30:51,519 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:30:51" (1/1) ... [2020-10-12 18:30:51,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a8bd8c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:30:51, skipping insertion in model container [2020-10-12 18:30:51,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:30:51" (1/1) ... [2020-10-12 18:30:51,531 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 18:30:51,549 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 18:30:51,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 18:30:51,739 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 18:30:51,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 18:30:51,784 INFO L208 MainTranslator]: Completed translation [2020-10-12 18:30:51,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:30:51 WrapperNode [2020-10-12 18:30:51,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 18:30:51,785 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 18:30:51,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 18:30:51,786 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 18:30:51,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:30:51" (1/1) ... [2020-10-12 18:30:51,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:30:51" (1/1) ... [2020-10-12 18:30:51,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:30:51" (1/1) ... [2020-10-12 18:30:51,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:30:51" (1/1) ... [2020-10-12 18:30:51,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:30:51" (1/1) ... [2020-10-12 18:30:51,921 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:30:51" (1/1) ... [2020-10-12 18:30:51,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:30:51" (1/1) ... [2020-10-12 18:30:51,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 18:30:51,928 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 18:30:51,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 18:30:51,929 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 18:30:51,930 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:30:51" (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 [2020-10-12 18:30:51,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 18:30:51,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 18:30:51,997 INFO L138 BoogieDeclarations]: Found implementation of procedure sep [2020-10-12 18:30:51,997 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 18:30:51,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 18:30:51,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 18:30:51,998 INFO L130 BoogieDeclarations]: Found specification of procedure sep [2020-10-12 18:30:51,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 18:30:51,998 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 18:30:51,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 18:30:51,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 18:30:51,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 18:30:51,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 18:30:51,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 18:30:52,293 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 18:30:52,293 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-12 18:30:52,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:30:52 BoogieIcfgContainer [2020-10-12 18:30:52,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 18:30:52,299 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 18:30:52,299 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 18:30:52,303 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 18:30:52,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 06:30:51" (1/3) ... [2020-10-12 18:30:52,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a7aebe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:30:52, skipping insertion in model container [2020-10-12 18:30:52,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:30:51" (2/3) ... [2020-10-12 18:30:52,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a7aebe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:30:52, skipping insertion in model container [2020-10-12 18:30:52,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:30:52" (3/3) ... [2020-10-12 18:30:52,307 INFO L109 eAbstractionObserver]: Analyzing ICFG sep60-2.i [2020-10-12 18:30:52,320 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 18:30:52,331 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 18:30:52,347 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 18:30:52,380 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 18:30:52,380 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 18:30:52,381 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 18:30:52,381 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 18:30:52,381 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 18:30:52,382 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 18:30:52,382 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 18:30:52,382 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 18:30:52,412 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-10-12 18:30:52,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 18:30:52,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:30:52,422 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:30:52,423 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:30:52,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:30:52,431 INFO L82 PathProgramCache]: Analyzing trace with hash 794343521, now seen corresponding path program 1 times [2020-10-12 18:30:52,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:30:52,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788135405] [2020-10-12 18:30:52,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:30:52,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:52,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:52,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:52,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:52,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:52,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:52,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:53,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:53,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 18:30:53,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 18:30:53,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1108 [2020-10-12 18:30:53,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:53,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:30:53,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:30:53,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 18:30:53,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 18:30:53,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:30:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:53,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:53,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:53,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:30:53,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:53,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:30:53,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:53,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:30:53,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:53,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:30:53,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 18:30:53,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:30:53,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:53,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:53,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:53,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:53,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:30:53,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:53,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-12 18:30:53,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:53,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:30:53,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:53,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:30:53,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:54,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 18:30:54,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:54,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:54,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:54,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:54,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:30:54,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:54,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 18:30:54,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:54,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:30:54,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:54,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:30:54,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:54,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 18:30:54,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:54,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:54,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:54,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:54,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:30:54,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:54,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 18:30:54,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:54,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:30:54,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:54,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:30:54,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:54,238 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 18:30:54,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788135405] [2020-10-12 18:30:54,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:30:54,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 18:30:54,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332987819] [2020-10-12 18:30:54,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 18:30:54,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:30:54,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 18:30:54,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:30:54,268 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 11 states. [2020-10-12 18:30:54,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:30:54,616 INFO L93 Difference]: Finished difference Result 86 states and 126 transitions. [2020-10-12 18:30:54,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 18:30:54,618 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-12 18:30:54,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:30:54,632 INFO L225 Difference]: With dead ends: 86 [2020-10-12 18:30:54,633 INFO L226 Difference]: Without dead ends: 52 [2020-10-12 18:30:54,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:30:54,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-12 18:30:54,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 38. [2020-10-12 18:30:54,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-12 18:30:54,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 50 transitions. [2020-10-12 18:30:54,700 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 50 transitions. Word has length 32 [2020-10-12 18:30:54,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:30:54,701 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 50 transitions. [2020-10-12 18:30:54,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 18:30:54,701 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 50 transitions. [2020-10-12 18:30:54,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-12 18:30:54,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:30:54,705 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:30:54,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 18:30:54,706 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:30:54,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:30:54,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1764294835, now seen corresponding path program 1 times [2020-10-12 18:30:54,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:30:54,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [19313825] [2020-10-12 18:30:54,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:30:54,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:54,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:54,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:54,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:54,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:54,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:56,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:56,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-12 18:30:56,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:30:56,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1559 [2020-10-12 18:30:56,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:56,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:30:56,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 18:30:56,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:30:56,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:56,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:30:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:56,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:56,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:56,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:30:56,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:56,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:30:56,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:56,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:30:56,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:56,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:30:56,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:56,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:30:56,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:56,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:56,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:56,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:56,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:30:56,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:56,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:30:56,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:56,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:30:56,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:56,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 18:30:56,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:30:56,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 18:30:56,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:56,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:56,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:56,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:56,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:30:56,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:56,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 18:30:56,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:56,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:30:56,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:56,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 18:30:56,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:30:56,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 18:30:56,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:56,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:56,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:56,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:30:56,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:56,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 18:30:56,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:56,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:30:56,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:56,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:30:56,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:30:56,413 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 18:30:56,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [19313825] [2020-10-12 18:30:56,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:30:56,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 18:30:56,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424310475] [2020-10-12 18:30:56,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 18:30:56,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:30:56,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 18:30:56,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 18:30:56,424 INFO L87 Difference]: Start difference. First operand 38 states and 50 transitions. Second operand 5 states. [2020-10-12 18:30:56,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:30:56,570 INFO L93 Difference]: Finished difference Result 62 states and 86 transitions. [2020-10-12 18:30:56,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 18:30:56,571 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-10-12 18:30:56,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:30:56,573 INFO L225 Difference]: With dead ends: 62 [2020-10-12 18:30:56,574 INFO L226 Difference]: Without dead ends: 33 [2020-10-12 18:30:56,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-12 18:30:56,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-12 18:30:56,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-10-12 18:30:56,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-12 18:30:56,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2020-10-12 18:30:56,597 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 35 [2020-10-12 18:30:56,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:30:56,597 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2020-10-12 18:30:56,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 18:30:56,597 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2020-10-12 18:30:56,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-12 18:30:56,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:30:56,603 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:30:56,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 18:30:56,603 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:30:56,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:30:56,604 INFO L82 PathProgramCache]: Analyzing trace with hash -738945770, now seen corresponding path program 2 times [2020-10-12 18:30:56,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:30:56,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57270492] [2020-10-12 18:30:56,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:30:56,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:56,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:56,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:56,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:56,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:57,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:01,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:01,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 18:31:01,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:31:01,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 18:31:01,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:01,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:31:01,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 18:31:01,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:31:01,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:01,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:01,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:01,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:01,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:01,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:01,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:31:01,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:01,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:01,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:01,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:01,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:31:01,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:01,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:01,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:01,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:01,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:01,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 18:31:01,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:01,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-12 18:31:01,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:01,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:31:01,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:01,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:31:01,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:01,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 18:31:01,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:01,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:01,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:01,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 18:31:01,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:01,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-12 18:31:01,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:01,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:31:01,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:01,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:31:01,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:31:01,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 18:31:01,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:01,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:01,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:01,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:01,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 18:31:01,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:01,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-12 18:31:01,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:01,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:31:01,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:01,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:31:01,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:01,910 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-12 18:31:01,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57270492] [2020-10-12 18:31:01,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:01,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 18:31:01,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462377287] [2020-10-12 18:31:01,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 18:31:01,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:01,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 18:31:01,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 18:31:01,914 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand 6 states. [2020-10-12 18:31:02,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:02,058 INFO L93 Difference]: Finished difference Result 58 states and 74 transitions. [2020-10-12 18:31:02,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 18:31:02,059 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-10-12 18:31:02,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:02,060 INFO L225 Difference]: With dead ends: 58 [2020-10-12 18:31:02,061 INFO L226 Difference]: Without dead ends: 36 [2020-10-12 18:31:02,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:31:02,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-12 18:31:02,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-12 18:31:02,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-12 18:31:02,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2020-10-12 18:31:02,069 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 50 [2020-10-12 18:31:02,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:02,069 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2020-10-12 18:31:02,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 18:31:02,070 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2020-10-12 18:31:02,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-12 18:31:02,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:02,071 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:02,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 18:31:02,072 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:02,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:02,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1066977793, now seen corresponding path program 3 times [2020-10-12 18:31:02,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:02,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135082252] [2020-10-12 18:31:02,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:02,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:02,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:02,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:02,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:02,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:07,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:07,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 18:31:07,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:31:07,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-12 18:31:07,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:07,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:31:07,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 18:31:07,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:31:07,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:31:07,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:07,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:07,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:07,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:07,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:07,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:07,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:31:07,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:07,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:07,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:07,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:07,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:31:07,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:07,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:07,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:07,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:07,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:07,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 18:31:07,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:07,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-12 18:31:07,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:07,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:31:07,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:07,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:31:07,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:31:07,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 18:31:07,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:07,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:07,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:07,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 18:31:07,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:07,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-12 18:31:07,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:07,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:31:07,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:07,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:31:07,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:07,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-12 18:31:07,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:07,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:07,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:07,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:07,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 18:31:07,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:07,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-12 18:31:07,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:07,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:31:07,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:07,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:31:07,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:31:07,556 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 36 proven. 72 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-12 18:31:07,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135082252] [2020-10-12 18:31:07,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:07,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 18:31:07,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591285330] [2020-10-12 18:31:07,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 18:31:07,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:07,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 18:31:07,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 18:31:07,562 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand 7 states. [2020-10-12 18:31:07,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:07,821 INFO L93 Difference]: Finished difference Result 64 states and 82 transitions. [2020-10-12 18:31:07,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 18:31:07,822 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 59 [2020-10-12 18:31:07,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:07,824 INFO L225 Difference]: With dead ends: 64 [2020-10-12 18:31:07,824 INFO L226 Difference]: Without dead ends: 39 [2020-10-12 18:31:07,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:31:07,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-12 18:31:07,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2020-10-12 18:31:07,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-12 18:31:07,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2020-10-12 18:31:07,841 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 59 [2020-10-12 18:31:07,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:07,841 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2020-10-12 18:31:07,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 18:31:07,841 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2020-10-12 18:31:07,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 18:31:07,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:07,846 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:07,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 18:31:07,847 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:07,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:07,847 INFO L82 PathProgramCache]: Analyzing trace with hash -65292490, now seen corresponding path program 4 times [2020-10-12 18:31:07,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:07,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668633034] [2020-10-12 18:31:07,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:07,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:07,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:07,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:07,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:07,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:12,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:12,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 18:31:12,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:31:12,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 18:31:12,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:12,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:31:12,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:31:12,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:31:12,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:12,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:12,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:12,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:12,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:12,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:12,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:12,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:31:12,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:12,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:12,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:12,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:12,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:12,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:12,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:12,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:13,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:13,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 18:31:13,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:13,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-12 18:31:13,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:13,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:31:13,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:13,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:31:13,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:13,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 18:31:13,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:13,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:13,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:13,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:13,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 18:31:13,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:13,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-12 18:31:13,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:13,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:31:13,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:13,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:31:13,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:13,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 18:31:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:13,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:13,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:13,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:13,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 18:31:13,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:13,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-12 18:31:13,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:13,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:31:13,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:13,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:31:13,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:13,312 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 66 proven. 132 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-12 18:31:13,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668633034] [2020-10-12 18:31:13,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:13,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 18:31:13,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499021830] [2020-10-12 18:31:13,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 18:31:13,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:13,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 18:31:13,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 18:31:13,316 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand 8 states. [2020-10-12 18:31:13,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:13,546 INFO L93 Difference]: Finished difference Result 70 states and 90 transitions. [2020-10-12 18:31:13,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 18:31:13,547 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 68 [2020-10-12 18:31:13,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:13,548 INFO L225 Difference]: With dead ends: 70 [2020-10-12 18:31:13,548 INFO L226 Difference]: Without dead ends: 42 [2020-10-12 18:31:13,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:31:13,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-12 18:31:13,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-10-12 18:31:13,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-12 18:31:13,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2020-10-12 18:31:13,564 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 68 [2020-10-12 18:31:13,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:13,566 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2020-10-12 18:31:13,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 18:31:13,567 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2020-10-12 18:31:13,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-12 18:31:13,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:13,571 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:13,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 18:31:13,573 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:13,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:13,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1783214881, now seen corresponding path program 5 times [2020-10-12 18:31:13,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:13,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099448881] [2020-10-12 18:31:13,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:13,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:13,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:13,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:13,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:13,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:18,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:18,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-12 18:31:18,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:31:18,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-12 18:31:18,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:18,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:31:18,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:31:18,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 18:31:18,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:18,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:18,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:18,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:18,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:18,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:18,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:18,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:31:18,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:18,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:18,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:18,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:18,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:18,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:18,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:18,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:18,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:18,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:31:18,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:18,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-12 18:31:18,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:18,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:31:18,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:18,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 18:31:18,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:18,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 18:31:18,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:18,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:18,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:18,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:18,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:31:18,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:18,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-12 18:31:18,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:18,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:31:18,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:18,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 18:31:18,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:19,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 18:31:19,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:19,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:19,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:19,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:19,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:31:19,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:19,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-12 18:31:19,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:19,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:31:19,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:19,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 18:31:19,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:19,203 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 105 proven. 210 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-12 18:31:19,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1099448881] [2020-10-12 18:31:19,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:19,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 18:31:19,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038164862] [2020-10-12 18:31:19,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 18:31:19,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:19,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 18:31:19,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:31:19,209 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand 9 states. [2020-10-12 18:31:19,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:19,463 INFO L93 Difference]: Finished difference Result 76 states and 98 transitions. [2020-10-12 18:31:19,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 18:31:19,464 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 77 [2020-10-12 18:31:19,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:19,465 INFO L225 Difference]: With dead ends: 76 [2020-10-12 18:31:19,465 INFO L226 Difference]: Without dead ends: 45 [2020-10-12 18:31:19,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:31:19,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-12 18:31:19,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2020-10-12 18:31:19,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-12 18:31:19,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2020-10-12 18:31:19,476 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 77 [2020-10-12 18:31:19,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:19,477 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2020-10-12 18:31:19,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 18:31:19,477 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2020-10-12 18:31:19,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-12 18:31:19,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:19,482 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:19,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 18:31:19,482 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:19,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:19,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1461104298, now seen corresponding path program 6 times [2020-10-12 18:31:19,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:19,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606894999] [2020-10-12 18:31:19,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:19,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:19,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:19,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:19,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:19,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:24,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:24,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 18:31:24,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:31:24,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-12 18:31:24,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:24,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:31:24,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:31:24,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 18:31:24,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:24,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:24,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:24,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:24,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:24,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:24,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:24,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:31:24,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:24,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:24,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:24,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:24,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:24,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:24,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:24,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:24,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:24,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 18:31:24,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:24,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-12 18:31:24,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:24,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:31:24,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:24,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 18:31:24,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:24,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-12 18:31:24,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:24,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:24,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:24,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:24,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 18:31:24,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:24,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-12 18:31:24,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:24,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:31:24,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:24,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 18:31:24,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:31:24,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-12 18:31:24,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:24,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:24,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:25,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:25,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 18:31:25,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:25,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-12 18:31:25,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:25,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:31:25,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:25,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 18:31:25,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:31:25,168 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 153 proven. 306 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-12 18:31:25,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606894999] [2020-10-12 18:31:25,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:25,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 18:31:25,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608257928] [2020-10-12 18:31:25,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 18:31:25,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:25,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 18:31:25,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-12 18:31:25,174 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand 10 states. [2020-10-12 18:31:25,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:25,406 INFO L93 Difference]: Finished difference Result 82 states and 106 transitions. [2020-10-12 18:31:25,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 18:31:25,406 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 86 [2020-10-12 18:31:25,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:25,408 INFO L225 Difference]: With dead ends: 82 [2020-10-12 18:31:25,408 INFO L226 Difference]: Without dead ends: 48 [2020-10-12 18:31:25,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-12 18:31:25,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-12 18:31:25,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-10-12 18:31:25,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-12 18:31:25,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2020-10-12 18:31:25,420 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 86 [2020-10-12 18:31:25,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:25,420 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2020-10-12 18:31:25,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 18:31:25,421 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2020-10-12 18:31:25,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-12 18:31:25,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:25,422 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:25,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 18:31:25,422 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:25,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:25,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1543869505, now seen corresponding path program 7 times [2020-10-12 18:31:25,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:25,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917314047] [2020-10-12 18:31:25,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:25,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:25,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:25,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:25,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:25,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:30,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:30,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-12 18:31:30,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:31:30,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-12 18:31:30,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:30,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:31:30,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-12 18:31:30,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 18:31:30,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:30,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:30,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:30,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:30,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:30,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:30,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:30,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:31:30,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:30,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:30,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:30,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:30,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:30,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:30,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:30,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:30,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:30,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:30,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 18:31:30,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:30,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-12 18:31:30,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:30,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:31:30,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:30,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 18:31:30,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:30,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 18:31:30,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:30,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:30,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:30,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 18:31:30,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:30,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-12 18:31:30,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:30,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:31:30,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:30,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 18:31:30,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:30,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-12 18:31:30,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:30,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:30,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:31,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:31,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 18:31:31,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:31,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-12 18:31:31,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:31,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:31:31,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:31,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 18:31:31,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:31,090 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 210 proven. 420 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-12 18:31:31,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917314047] [2020-10-12 18:31:31,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:31,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 18:31:31,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401860883] [2020-10-12 18:31:31,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 18:31:31,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:31,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 18:31:31,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:31:31,093 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand 11 states. [2020-10-12 18:31:31,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:31,338 INFO L93 Difference]: Finished difference Result 88 states and 114 transitions. [2020-10-12 18:31:31,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 18:31:31,339 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 95 [2020-10-12 18:31:31,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:31,340 INFO L225 Difference]: With dead ends: 88 [2020-10-12 18:31:31,340 INFO L226 Difference]: Without dead ends: 51 [2020-10-12 18:31:31,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-12 18:31:31,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-12 18:31:31,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2020-10-12 18:31:31,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-12 18:31:31,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 61 transitions. [2020-10-12 18:31:31,347 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 61 transitions. Word has length 95 [2020-10-12 18:31:31,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:31,348 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 61 transitions. [2020-10-12 18:31:31,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 18:31:31,348 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 61 transitions. [2020-10-12 18:31:31,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-12 18:31:31,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:31,349 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:31,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 18:31:31,349 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:31,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:31,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1095277706, now seen corresponding path program 8 times [2020-10-12 18:31:31,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:31,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725036334] [2020-10-12 18:31:31,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:31,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:31,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:31,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:31,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:31,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:36,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:36,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 18:31:36,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:31:36,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 18:31:36,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:36,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:31:36,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-12 18:31:36,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 18:31:36,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:36,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:36,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:36,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:36,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:36,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:36,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:36,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:31:36,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:36,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:36,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:36,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:36,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:36,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:36,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:36,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:36,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:36,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:36,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 18:31:36,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:36,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-12 18:31:36,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:36,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:31:36,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:36,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 18:31:36,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:36,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 18:31:36,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:36,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:36,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:36,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 18:31:36,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:36,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-12 18:31:36,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:36,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:31:36,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:36,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 18:31:36,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:36,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-12 18:31:36,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:36,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:36,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:37,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:37,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 18:31:37,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:37,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-12 18:31:37,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:37,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:31:37,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:37,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 18:31:37,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:37,203 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 276 proven. 552 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-12 18:31:37,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725036334] [2020-10-12 18:31:37,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:37,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 18:31:37,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783830512] [2020-10-12 18:31:37,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 18:31:37,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:37,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 18:31:37,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-12 18:31:37,206 INFO L87 Difference]: Start difference. First operand 49 states and 61 transitions. Second operand 12 states. [2020-10-12 18:31:37,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:37,531 INFO L93 Difference]: Finished difference Result 94 states and 122 transitions. [2020-10-12 18:31:37,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 18:31:37,539 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 104 [2020-10-12 18:31:37,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:37,541 INFO L225 Difference]: With dead ends: 94 [2020-10-12 18:31:37,541 INFO L226 Difference]: Without dead ends: 54 [2020-10-12 18:31:37,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-12 18:31:37,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-12 18:31:37,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2020-10-12 18:31:37,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-12 18:31:37,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2020-10-12 18:31:37,557 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 104 [2020-10-12 18:31:37,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:37,557 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2020-10-12 18:31:37,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 18:31:37,558 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2020-10-12 18:31:37,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-12 18:31:37,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:37,559 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:37,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 18:31:37,559 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:37,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:37,559 INFO L82 PathProgramCache]: Analyzing trace with hash -799436129, now seen corresponding path program 9 times [2020-10-12 18:31:37,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:37,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034847252] [2020-10-12 18:31:37,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:37,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:37,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:37,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:37,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:37,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:42,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:42,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-12 18:31:42,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:31:42,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 18:31:42,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:42,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:31:42,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-12 18:31:42,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 18:31:42,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:42,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:42,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:42,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:42,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:42,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:42,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:42,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:31:42,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:42,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:42,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:42,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:42,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:42,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:42,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:42,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:42,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:42,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 18:31:42,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:42,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-12 18:31:42,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:42,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:31:42,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:42,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 18:31:42,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:42,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-12 18:31:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:42,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:43,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:43,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 18:31:43,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:43,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-12 18:31:43,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:43,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:31:43,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:43,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 18:31:43,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:43,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-12 18:31:43,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:43,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:43,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:43,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:43,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 18:31:43,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:43,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-12 18:31:43,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:43,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:31:43,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:43,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 18:31:43,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:43,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 351 proven. 702 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-12 18:31:43,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034847252] [2020-10-12 18:31:43,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:43,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 18:31:43,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552031665] [2020-10-12 18:31:43,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 18:31:43,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:43,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 18:31:43,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:31:43,221 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand 13 states. [2020-10-12 18:31:43,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:43,568 INFO L93 Difference]: Finished difference Result 100 states and 130 transitions. [2020-10-12 18:31:43,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 18:31:43,569 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 113 [2020-10-12 18:31:43,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:43,570 INFO L225 Difference]: With dead ends: 100 [2020-10-12 18:31:43,571 INFO L226 Difference]: Without dead ends: 57 [2020-10-12 18:31:43,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-12 18:31:43,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-12 18:31:43,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2020-10-12 18:31:43,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-12 18:31:43,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 69 transitions. [2020-10-12 18:31:43,578 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 69 transitions. Word has length 113 [2020-10-12 18:31:43,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:43,578 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 69 transitions. [2020-10-12 18:31:43,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 18:31:43,578 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 69 transitions. [2020-10-12 18:31:43,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 18:31:43,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:43,579 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:43,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 18:31:43,580 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:43,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:43,580 INFO L82 PathProgramCache]: Analyzing trace with hash -178262634, now seen corresponding path program 10 times [2020-10-12 18:31:43,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:43,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398079402] [2020-10-12 18:31:43,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:43,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:43,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:43,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:43,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:43,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:48,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:48,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-12 18:31:48,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:31:48,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-12 18:31:48,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:48,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:31:48,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 18:31:48,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 18:31:48,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:31:48,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:48,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:48,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:48,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:48,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:48,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:48,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:31:48,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:48,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:48,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:48,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:48,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:48,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:48,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:48,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:48,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:48,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:48,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 18:31:48,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:48,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-10-12 18:31:48,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:48,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:31:48,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:48,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 18:31:48,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:31:49,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 18:31:49,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:49,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:49,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:49,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 18:31:49,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:49,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-12 18:31:49,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:49,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:31:49,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:49,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 18:31:49,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:49,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 18:31:49,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:49,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:49,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:49,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:49,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 18:31:49,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:49,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 448 [2020-10-12 18:31:49,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:49,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:31:49,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:49,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 18:31:49,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:49,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 435 proven. 870 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-12 18:31:49,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398079402] [2020-10-12 18:31:49,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:49,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 18:31:49,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617750765] [2020-10-12 18:31:49,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 18:31:49,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:49,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 18:31:49,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-12 18:31:49,900 INFO L87 Difference]: Start difference. First operand 55 states and 69 transitions. Second operand 14 states. [2020-10-12 18:31:50,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:50,387 INFO L93 Difference]: Finished difference Result 106 states and 138 transitions. [2020-10-12 18:31:50,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 18:31:50,388 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 122 [2020-10-12 18:31:50,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:50,389 INFO L225 Difference]: With dead ends: 106 [2020-10-12 18:31:50,389 INFO L226 Difference]: Without dead ends: 60 [2020-10-12 18:31:50,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-12 18:31:50,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-12 18:31:50,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-10-12 18:31:50,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-12 18:31:50,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 73 transitions. [2020-10-12 18:31:50,411 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 73 transitions. Word has length 122 [2020-10-12 18:31:50,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:50,412 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 73 transitions. [2020-10-12 18:31:50,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 18:31:50,412 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 73 transitions. [2020-10-12 18:31:50,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-12 18:31:50,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:50,415 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:50,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 18:31:50,416 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:50,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:50,416 INFO L82 PathProgramCache]: Analyzing trace with hash 2088354175, now seen corresponding path program 11 times [2020-10-12 18:31:50,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:50,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713762228] [2020-10-12 18:31:50,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:50,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:50,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:50,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:50,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:55,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:55,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-12 18:31:55,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:31:55,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 18:31:55,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:55,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:31:55,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-12 18:31:55,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 18:31:55,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:55,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:55,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:55,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:55,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:55,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:55,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:55,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:31:55,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:55,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:55,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:55,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:55,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 18:31:55,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:55,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:55,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:55,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:55,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:55,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-12 18:31:55,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:55,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 493 [2020-10-12 18:31:55,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:55,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:31:55,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:55,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 18:31:55,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:56,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 18:31:56,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:56,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:56,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:56,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-12 18:31:56,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:56,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-12 18:31:56,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:56,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:31:56,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:56,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 18:31:56,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:56,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-12 18:31:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:56,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:56,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:56,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:56,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-12 18:31:56,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:56,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 433 [2020-10-12 18:31:56,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:56,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:31:56,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:56,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 18:31:56,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:56,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1698 backedges. 528 proven. 1056 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-12 18:31:56,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713762228] [2020-10-12 18:31:56,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:56,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 18:31:56,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603980315] [2020-10-12 18:31:56,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 18:31:56,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:56,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 18:31:56,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:31:56,803 INFO L87 Difference]: Start difference. First operand 58 states and 73 transitions. Second operand 15 states. [2020-10-12 18:31:57,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:57,215 INFO L93 Difference]: Finished difference Result 112 states and 146 transitions. [2020-10-12 18:31:57,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 18:31:57,215 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 131 [2020-10-12 18:31:57,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:57,216 INFO L225 Difference]: With dead ends: 112 [2020-10-12 18:31:57,216 INFO L226 Difference]: Without dead ends: 63 [2020-10-12 18:31:57,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-12 18:31:57,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-12 18:31:57,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2020-10-12 18:31:57,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-12 18:31:57,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 77 transitions. [2020-10-12 18:31:57,224 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 77 transitions. Word has length 131 [2020-10-12 18:31:57,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:57,225 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 77 transitions. [2020-10-12 18:31:57,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 18:31:57,225 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 77 transitions. [2020-10-12 18:31:57,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-12 18:31:57,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:57,227 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:57,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 18:31:57,227 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:57,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:57,227 INFO L82 PathProgramCache]: Analyzing trace with hash 2017259446, now seen corresponding path program 12 times [2020-10-12 18:31:57,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:57,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108429584] [2020-10-12 18:31:57,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:57,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:57,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:57,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:57,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:57,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:02,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:02,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-12 18:32:02,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:32:02,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 18:32:02,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:02,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:32:02,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:32:02,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:32:02,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:02,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:02,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:02,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:02,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:02,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:02,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:02,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:32:02,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:02,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:02,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:02,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:02,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:02,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:32:02,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:02,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:02,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:02,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 18:32:02,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:02,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-12 18:32:02,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:02,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:32:02,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:02,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:32:02,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:02,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-12 18:32:02,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:02,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:02,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:02,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:02,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 18:32:02,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:02,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-10-12 18:32:02,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:02,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:32:02,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:02,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:32:02,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:03,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 18:32:03,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:03,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:03,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:03,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:03,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 18:32:03,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:03,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-10-12 18:32:03,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:03,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:32:03,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:03,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:32:03,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:03,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2013 backedges. 630 proven. 1260 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-12 18:32:03,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108429584] [2020-10-12 18:32:03,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:03,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 18:32:03,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475925772] [2020-10-12 18:32:03,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 18:32:03,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:03,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 18:32:03,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-12 18:32:03,338 INFO L87 Difference]: Start difference. First operand 61 states and 77 transitions. Second operand 16 states. [2020-10-12 18:32:03,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:03,768 INFO L93 Difference]: Finished difference Result 118 states and 154 transitions. [2020-10-12 18:32:03,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 18:32:03,768 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 140 [2020-10-12 18:32:03,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:03,769 INFO L225 Difference]: With dead ends: 118 [2020-10-12 18:32:03,770 INFO L226 Difference]: Without dead ends: 66 [2020-10-12 18:32:03,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-12 18:32:03,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-12 18:32:03,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-10-12 18:32:03,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-12 18:32:03,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 81 transitions. [2020-10-12 18:32:03,778 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 81 transitions. Word has length 140 [2020-10-12 18:32:03,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:03,779 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 81 transitions. [2020-10-12 18:32:03,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 18:32:03,779 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 81 transitions. [2020-10-12 18:32:03,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-12 18:32:03,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:03,781 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:03,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 18:32:03,781 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:03,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:03,781 INFO L82 PathProgramCache]: Analyzing trace with hash -427755425, now seen corresponding path program 13 times [2020-10-12 18:32:03,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:03,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333882038] [2020-10-12 18:32:03,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:03,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:03,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:03,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:03,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:03,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:08,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:08,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-12 18:32:08,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:32:08,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 18:32:08,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:08,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:32:08,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:32:08,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 18:32:08,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:08,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:08,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:08,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:08,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:08,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:08,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:08,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:32:08,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:08,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:08,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:08,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:08,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:08,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:32:08,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:08,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:09,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:09,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-12 18:32:09,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:09,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-12 18:32:09,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:09,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:32:09,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:09,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 18:32:09,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:09,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 18:32:09,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:09,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:09,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:09,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:09,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-12 18:32:09,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:09,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-10-12 18:32:09,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:09,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:32:09,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:09,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 18:32:09,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:09,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-12 18:32:09,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:09,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:09,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:10,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:10,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-12 18:32:10,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:10,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 391 [2020-10-12 18:32:10,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:10,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:32:10,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:10,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 18:32:10,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:10,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2355 backedges. 741 proven. 1482 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-10-12 18:32:10,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333882038] [2020-10-12 18:32:10,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:10,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 18:32:10,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865354995] [2020-10-12 18:32:10,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 18:32:10,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:10,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 18:32:10,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-12 18:32:10,087 INFO L87 Difference]: Start difference. First operand 64 states and 81 transitions. Second operand 17 states. [2020-10-12 18:32:10,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:10,516 INFO L93 Difference]: Finished difference Result 124 states and 162 transitions. [2020-10-12 18:32:10,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 18:32:10,516 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 149 [2020-10-12 18:32:10,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:10,517 INFO L225 Difference]: With dead ends: 124 [2020-10-12 18:32:10,518 INFO L226 Difference]: Without dead ends: 69 [2020-10-12 18:32:10,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-12 18:32:10,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-12 18:32:10,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2020-10-12 18:32:10,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-12 18:32:10,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2020-10-12 18:32:10,536 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 85 transitions. Word has length 149 [2020-10-12 18:32:10,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:10,536 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 85 transitions. [2020-10-12 18:32:10,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 18:32:10,536 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 85 transitions. [2020-10-12 18:32:10,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-12 18:32:10,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:10,538 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:10,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 18:32:10,539 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:10,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:10,539 INFO L82 PathProgramCache]: Analyzing trace with hash -2044171818, now seen corresponding path program 14 times [2020-10-12 18:32:10,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:10,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1093404201] [2020-10-12 18:32:10,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:10,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:10,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:10,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:10,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:10,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:15,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:15,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-12 18:32:15,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:32:15,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 18:32:15,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:15,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 18:32:15,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-12 18:32:15,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 18:32:15,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:15,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:15,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:15,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:15,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:15,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:15,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:15,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:32:15,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:15,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:15,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:15,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:15,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:15,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:32:15,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:15,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:15,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:16,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:16,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 18:32:16,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:16,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 430 [2020-10-12 18:32:16,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:16,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 18:32:16,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:16,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 18:32:16,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:16,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-12 18:32:16,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:16,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:16,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:16,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 18:32:16,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:16,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-10-12 18:32:16,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:16,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 18:32:16,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:16,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 18:32:16,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:16,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-12 18:32:16,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:16,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:16,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:16,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:16,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 18:32:16,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:16,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-10-12 18:32:16,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:16,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 18:32:16,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:16,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 18:32:16,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:16,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2724 backedges. 861 proven. 1722 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-10-12 18:32:16,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1093404201] [2020-10-12 18:32:16,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:16,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 18:32:16,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037151984] [2020-10-12 18:32:17,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 18:32:17,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:17,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 18:32:17,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-12 18:32:17,001 INFO L87 Difference]: Start difference. First operand 67 states and 85 transitions. Second operand 18 states. [2020-10-12 18:32:17,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:17,516 INFO L93 Difference]: Finished difference Result 130 states and 170 transitions. [2020-10-12 18:32:17,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 18:32:17,517 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 158 [2020-10-12 18:32:17,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:17,518 INFO L225 Difference]: With dead ends: 130 [2020-10-12 18:32:17,518 INFO L226 Difference]: Without dead ends: 72 [2020-10-12 18:32:17,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 18:32:17,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-12 18:32:17,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-10-12 18:32:17,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-12 18:32:17,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 89 transitions. [2020-10-12 18:32:17,525 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 89 transitions. Word has length 158 [2020-10-12 18:32:17,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:17,526 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 89 transitions. [2020-10-12 18:32:17,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 18:32:17,526 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 89 transitions. [2020-10-12 18:32:17,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-12 18:32:17,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:17,528 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:17,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 18:32:17,528 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:17,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:17,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1995098305, now seen corresponding path program 15 times [2020-10-12 18:32:17,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:17,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562836276] [2020-10-12 18:32:17,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:17,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:17,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:17,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:17,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:22,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:22,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-12 18:32:22,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:32:22,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-12 18:32:22,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:22,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 18:32:22,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:32:22,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-12 18:32:22,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:22,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:22,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:22,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:22,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:22,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:22,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:22,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:32:22,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:22,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:22,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:22,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:22,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:22,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:32:22,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:22,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:22,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:22,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-12 18:32:22,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:22,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-10-12 18:32:22,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:22,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 18:32:22,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:22,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-12 18:32:22,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:23,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-12 18:32:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:23,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:23,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:23,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:23,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-12 18:32:23,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:23,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 507 [2020-10-12 18:32:23,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:23,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 18:32:23,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:23,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-12 18:32:23,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:23,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-12 18:32:23,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:23,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:23,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:24,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:24,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-12 18:32:24,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:24,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 487 [2020-10-12 18:32:24,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:24,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 18:32:24,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:24,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-12 18:32:24,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:24,247 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 990 proven. 1980 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2020-10-12 18:32:24,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562836276] [2020-10-12 18:32:24,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:24,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 18:32:24,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176431448] [2020-10-12 18:32:24,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 18:32:24,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:24,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 18:32:24,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-12 18:32:24,249 INFO L87 Difference]: Start difference. First operand 70 states and 89 transitions. Second operand 19 states. [2020-10-12 18:32:24,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:24,772 INFO L93 Difference]: Finished difference Result 136 states and 178 transitions. [2020-10-12 18:32:24,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 18:32:24,772 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 167 [2020-10-12 18:32:24,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:24,773 INFO L225 Difference]: With dead ends: 136 [2020-10-12 18:32:24,773 INFO L226 Difference]: Without dead ends: 75 [2020-10-12 18:32:24,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 18:32:24,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-12 18:32:24,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2020-10-12 18:32:24,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-12 18:32:24,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 93 transitions. [2020-10-12 18:32:24,785 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 93 transitions. Word has length 167 [2020-10-12 18:32:24,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:24,787 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 93 transitions. [2020-10-12 18:32:24,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 18:32:24,787 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 93 transitions. [2020-10-12 18:32:24,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-12 18:32:24,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:24,789 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 48, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:24,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 18:32:24,790 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:24,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:24,790 INFO L82 PathProgramCache]: Analyzing trace with hash 293362678, now seen corresponding path program 16 times [2020-10-12 18:32:24,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:24,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471135287] [2020-10-12 18:32:24,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:24,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:24,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:24,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:24,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:24,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:29,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:29,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-12 18:32:29,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:32:29,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 18:32:29,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:29,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:32:29,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-12 18:32:29,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 18:32:29,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:29,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:29,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:29,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:29,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:29,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:29,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:29,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:32:29,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:29,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:29,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:29,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:29,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:29,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:32:29,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:29,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:29,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:30,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:30,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 18:32:30,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:30,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 569 [2020-10-12 18:32:30,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:30,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:32:30,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:30,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 18:32:30,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:30,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-12 18:32:30,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:30,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:31,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:31,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 18:32:31,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:31,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 425 [2020-10-12 18:32:31,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:31,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:32:31,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:31,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 18:32:31,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:31,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-12 18:32:31,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:31,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:31,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:31,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:31,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 18:32:31,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:31,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 567 [2020-10-12 18:32:31,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:31,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:32:31,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:31,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 18:32:31,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:31,722 INFO L134 CoverageAnalysis]: Checked inductivity of 3543 backedges. 1128 proven. 2256 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-12 18:32:31,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471135287] [2020-10-12 18:32:31,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:31,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 18:32:31,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410416208] [2020-10-12 18:32:31,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 18:32:31,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:31,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 18:32:31,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-12 18:32:31,725 INFO L87 Difference]: Start difference. First operand 73 states and 93 transitions. Second operand 20 states. [2020-10-12 18:32:32,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:32,324 INFO L93 Difference]: Finished difference Result 142 states and 186 transitions. [2020-10-12 18:32:32,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 18:32:32,331 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 176 [2020-10-12 18:32:32,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:32,332 INFO L225 Difference]: With dead ends: 142 [2020-10-12 18:32:32,332 INFO L226 Difference]: Without dead ends: 78 [2020-10-12 18:32:32,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 18:32:32,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-12 18:32:32,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-10-12 18:32:32,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-12 18:32:32,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 97 transitions. [2020-10-12 18:32:32,339 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 97 transitions. Word has length 176 [2020-10-12 18:32:32,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:32,339 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 97 transitions. [2020-10-12 18:32:32,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 18:32:32,339 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 97 transitions. [2020-10-12 18:32:32,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-12 18:32:32,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:32,341 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 51, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:32,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 18:32:32,342 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:32,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:32,342 INFO L82 PathProgramCache]: Analyzing trace with hash 2069659167, now seen corresponding path program 17 times [2020-10-12 18:32:32,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:32,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [931640902] [2020-10-12 18:32:32,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:32,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:32,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:32,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:32,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:37,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:37,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-12 18:32:37,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:32:37,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-12 18:32:37,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:37,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 18:32:37,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:32:37,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 18:32:37,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:37,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:37,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:37,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:37,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:37,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:37,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:37,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:32:37,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:37,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:37,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:37,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:37,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:37,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:32:37,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:37,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:37,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:37,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 18:32:37,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:37,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 452 [2020-10-12 18:32:37,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:37,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 18:32:37,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:37,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 18:32:37,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:38,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-12 18:32:38,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:38,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:38,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:38,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:38,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 18:32:38,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:38,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 503 [2020-10-12 18:32:38,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:38,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 18:32:38,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:38,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 18:32:38,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:38,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-12 18:32:38,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:38,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:38,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:39,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:39,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 18:32:39,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:39,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 466 [2020-10-12 18:32:39,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:39,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 18:32:39,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:39,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 18:32:39,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:39,195 INFO L134 CoverageAnalysis]: Checked inductivity of 3993 backedges. 1275 proven. 2550 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2020-10-12 18:32:39,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [931640902] [2020-10-12 18:32:39,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:39,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 18:32:39,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044749867] [2020-10-12 18:32:39,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 18:32:39,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:39,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 18:32:39,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-12 18:32:39,198 INFO L87 Difference]: Start difference. First operand 76 states and 97 transitions. Second operand 21 states. [2020-10-12 18:32:39,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:39,782 INFO L93 Difference]: Finished difference Result 148 states and 194 transitions. [2020-10-12 18:32:39,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 18:32:39,783 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 185 [2020-10-12 18:32:39,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:39,784 INFO L225 Difference]: With dead ends: 148 [2020-10-12 18:32:39,784 INFO L226 Difference]: Without dead ends: 81 [2020-10-12 18:32:39,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 18:32:39,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-12 18:32:39,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2020-10-12 18:32:39,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-12 18:32:39,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 101 transitions. [2020-10-12 18:32:39,792 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 101 transitions. Word has length 185 [2020-10-12 18:32:39,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:39,792 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 101 transitions. [2020-10-12 18:32:39,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 18:32:39,792 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 101 transitions. [2020-10-12 18:32:39,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-12 18:32:39,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:39,794 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 54, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:39,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 18:32:39,795 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:39,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:39,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1611843094, now seen corresponding path program 18 times [2020-10-12 18:32:39,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:39,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955590346] [2020-10-12 18:32:39,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:39,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:39,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:39,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:39,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:39,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:44,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:44,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-12 18:32:44,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:32:44,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-12 18:32:44,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:44,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 18:32:44,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:32:44,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 18:32:44,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:44,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:44,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:44,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:44,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:44,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:44,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:44,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:32:44,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:44,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:44,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:44,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:44,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:44,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:32:44,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:44,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:45,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:45,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 18:32:45,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:45,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 512 [2020-10-12 18:32:45,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:45,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 18:32:45,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:45,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 18:32:45,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:45,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-12 18:32:45,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:45,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:45,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:46,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:46,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 18:32:46,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:46,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 545 [2020-10-12 18:32:46,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:46,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 18:32:46,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:46,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 18:32:46,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:46,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-12 18:32:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:46,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:46,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:46,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:46,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 18:32:46,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:46,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 579 [2020-10-12 18:32:46,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:46,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 18:32:46,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:46,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 18:32:46,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:46,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4470 backedges. 1431 proven. 2862 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-10-12 18:32:46,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955590346] [2020-10-12 18:32:46,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:46,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 18:32:46,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483038060] [2020-10-12 18:32:46,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 18:32:46,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:46,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 18:32:46,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-12 18:32:46,896 INFO L87 Difference]: Start difference. First operand 79 states and 101 transitions. Second operand 22 states. [2020-10-12 18:32:47,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:47,552 INFO L93 Difference]: Finished difference Result 154 states and 202 transitions. [2020-10-12 18:32:47,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 18:32:47,553 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 194 [2020-10-12 18:32:47,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:47,554 INFO L225 Difference]: With dead ends: 154 [2020-10-12 18:32:47,554 INFO L226 Difference]: Without dead ends: 84 [2020-10-12 18:32:47,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 18:32:47,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-12 18:32:47,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2020-10-12 18:32:47,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-12 18:32:47,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 105 transitions. [2020-10-12 18:32:47,563 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 105 transitions. Word has length 194 [2020-10-12 18:32:47,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:47,563 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 105 transitions. [2020-10-12 18:32:47,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-12 18:32:47,564 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 105 transitions. [2020-10-12 18:32:47,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-12 18:32:47,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:47,566 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 57, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:47,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 18:32:47,567 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:47,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:47,567 INFO L82 PathProgramCache]: Analyzing trace with hash -788738817, now seen corresponding path program 19 times [2020-10-12 18:32:47,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:47,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664522058] [2020-10-12 18:32:47,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:47,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:47,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:47,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:47,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:47,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:52,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:52,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-12 18:32:52,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:32:52,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-12 18:32:52,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:52,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 18:32:52,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:32:52,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 18:32:52,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:52,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:52,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:52,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:52,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:52,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:52,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:52,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:32:52,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:52,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:52,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:52,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:52,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:52,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:32:52,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:52,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:53,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:53,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-12 18:32:53,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:53,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 618 [2020-10-12 18:32:53,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:53,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 18:32:53,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:53,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 18:32:53,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:53,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-12 18:32:53,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:53,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:53,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:54,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:54,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-12 18:32:54,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:54,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 617 [2020-10-12 18:32:54,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:54,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 18:32:54,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:54,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 18:32:54,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:54,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-12 18:32:54,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:54,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:54,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:54,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:54,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-12 18:32:54,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:54,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 632 [2020-10-12 18:32:54,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:54,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 18:32:54,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:54,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 18:32:54,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:54,923 INFO L134 CoverageAnalysis]: Checked inductivity of 4974 backedges. 1596 proven. 3192 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2020-10-12 18:32:54,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664522058] [2020-10-12 18:32:54,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:54,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 18:32:54,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089934608] [2020-10-12 18:32:54,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 18:32:54,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:54,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 18:32:54,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-12 18:32:54,925 INFO L87 Difference]: Start difference. First operand 82 states and 105 transitions. Second operand 23 states. [2020-10-12 18:32:55,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:55,731 INFO L93 Difference]: Finished difference Result 160 states and 210 transitions. [2020-10-12 18:32:55,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 18:32:55,732 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 203 [2020-10-12 18:32:55,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:55,733 INFO L225 Difference]: With dead ends: 160 [2020-10-12 18:32:55,733 INFO L226 Difference]: Without dead ends: 87 [2020-10-12 18:32:55,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2020-10-12 18:32:55,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-12 18:32:55,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2020-10-12 18:32:55,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-12 18:32:55,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 109 transitions. [2020-10-12 18:32:55,740 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 109 transitions. Word has length 203 [2020-10-12 18:32:55,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:55,741 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 109 transitions. [2020-10-12 18:32:55,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 18:32:55,741 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 109 transitions. [2020-10-12 18:32:55,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-12 18:32:55,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:55,744 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 60, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:55,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 18:32:55,744 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:55,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:55,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1421498314, now seen corresponding path program 20 times [2020-10-12 18:32:55,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:55,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2132641430] [2020-10-12 18:32:55,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:55,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:55,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:55,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:55,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:55,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:00,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:00,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-12 18:33:00,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:33:00,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-12 18:33:00,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:00,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 18:33:00,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:33:00,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 18:33:00,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:00,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:33:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:00,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:00,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:00,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:33:00,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:00,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:33:00,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:00,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:33:00,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:33:00,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:33:00,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:00,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:33:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:00,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:01,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:01,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 18:33:01,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:01,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 683 [2020-10-12 18:33:01,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:01,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 18:33:01,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:01,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 18:33:01,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:01,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-12 18:33:01,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:01,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:01,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:02,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:02,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 18:33:02,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:02,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 715 [2020-10-12 18:33:02,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:02,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 18:33:02,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:02,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 18:33:02,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:02,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-12 18:33:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:02,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:02,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:03,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:03,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 18:33:03,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:03,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 710 [2020-10-12 18:33:03,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:03,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 18:33:03,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:03,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 18:33:03,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:03,472 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 1770 proven. 3540 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-12 18:33:03,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2132641430] [2020-10-12 18:33:03,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:33:03,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-12 18:33:03,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328588551] [2020-10-12 18:33:03,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-12 18:33:03,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:33:03,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-12 18:33:03,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-12 18:33:03,476 INFO L87 Difference]: Start difference. First operand 85 states and 109 transitions. Second operand 24 states. [2020-10-12 18:33:04,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:33:04,274 INFO L93 Difference]: Finished difference Result 166 states and 218 transitions. [2020-10-12 18:33:04,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 18:33:04,275 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 212 [2020-10-12 18:33:04,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:33:04,276 INFO L225 Difference]: With dead ends: 166 [2020-10-12 18:33:04,276 INFO L226 Difference]: Without dead ends: 90 [2020-10-12 18:33:04,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2020-10-12 18:33:04,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-12 18:33:04,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2020-10-12 18:33:04,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-12 18:33:04,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 113 transitions. [2020-10-12 18:33:04,287 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 113 transitions. Word has length 212 [2020-10-12 18:33:04,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:33:04,288 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 113 transitions. [2020-10-12 18:33:04,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-12 18:33:04,288 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 113 transitions. [2020-10-12 18:33:04,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-12 18:33:04,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:33:04,290 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 63, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:33:04,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 18:33:04,291 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:33:04,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:33:04,291 INFO L82 PathProgramCache]: Analyzing trace with hash -98819105, now seen corresponding path program 21 times [2020-10-12 18:33:04,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:33:04,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611819791] [2020-10-12 18:33:04,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:33:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:04,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:04,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:04,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:04,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:09,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:09,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-12 18:33:09,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:33:09,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-12 18:33:09,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:09,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 18:33:09,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-12 18:33:09,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 18:33:09,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:09,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:33:09,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:09,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:09,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:09,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:33:09,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:09,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:33:09,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:09,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:33:09,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:33:09,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:33:09,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:09,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:33:09,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:09,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:09,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:10,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:10,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 18:33:10,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:10,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 735 [2020-10-12 18:33:10,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:10,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 18:33:10,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:10,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 18:33:10,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:10,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-12 18:33:10,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:10,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:11,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:11,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 18:33:11,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:11,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 787 [2020-10-12 18:33:11,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:11,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 18:33:11,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:11,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 18:33:11,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:11,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-12 18:33:11,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:11,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:11,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:12,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:12,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 18:33:12,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:12,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 907 [2020-10-12 18:33:12,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:12,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 18:33:12,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:12,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 18:33:12,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:12,311 INFO L134 CoverageAnalysis]: Checked inductivity of 6063 backedges. 1953 proven. 3906 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2020-10-12 18:33:12,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [611819791] [2020-10-12 18:33:12,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:33:12,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-12 18:33:12,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808704342] [2020-10-12 18:33:12,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-12 18:33:12,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:33:12,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-12 18:33:12,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-12 18:33:12,313 INFO L87 Difference]: Start difference. First operand 88 states and 113 transitions. Second operand 25 states. [2020-10-12 18:33:13,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:33:13,142 INFO L93 Difference]: Finished difference Result 172 states and 226 transitions. [2020-10-12 18:33:13,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 18:33:13,144 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 221 [2020-10-12 18:33:13,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:33:13,145 INFO L225 Difference]: With dead ends: 172 [2020-10-12 18:33:13,145 INFO L226 Difference]: Without dead ends: 93 [2020-10-12 18:33:13,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2020-10-12 18:33:13,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-12 18:33:13,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2020-10-12 18:33:13,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-12 18:33:13,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 117 transitions. [2020-10-12 18:33:13,151 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 117 transitions. Word has length 221 [2020-10-12 18:33:13,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:33:13,152 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 117 transitions. [2020-10-12 18:33:13,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-12 18:33:13,152 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 117 transitions. [2020-10-12 18:33:13,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-12 18:33:13,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:33:13,153 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 66, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:33:13,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 18:33:13,154 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:33:13,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:33:13,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1074855338, now seen corresponding path program 22 times [2020-10-12 18:33:13,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:33:13,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582673740] [2020-10-12 18:33:13,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:33:13,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:13,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:13,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:13,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:13,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:18,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:18,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-12 18:33:18,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:33:18,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 18:33:18,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:18,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 18:33:18,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:33:18,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 18:33:18,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:18,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:33:18,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:18,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:18,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:18,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:33:18,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:18,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:33:18,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:18,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:33:18,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:33:18,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:33:18,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:18,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:33:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:18,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:19,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:19,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 18:33:19,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:19,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 848 [2020-10-12 18:33:19,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:19,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 18:33:19,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:19,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 18:33:19,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:19,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-12 18:33:19,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:19,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:19,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:20,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:20,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 18:33:20,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:20,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 956 [2020-10-12 18:33:20,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:20,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 18:33:20,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:20,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 18:33:20,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:20,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-12 18:33:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:20,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:20,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:21,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:21,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 18:33:21,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:21,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 898 [2020-10-12 18:33:21,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:21,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 18:33:21,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:21,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 18:33:21,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:21,415 INFO L134 CoverageAnalysis]: Checked inductivity of 6648 backedges. 2145 proven. 4290 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2020-10-12 18:33:21,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582673740] [2020-10-12 18:33:21,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:33:21,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-12 18:33:21,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572186038] [2020-10-12 18:33:21,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-12 18:33:21,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:33:21,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-12 18:33:21,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-12 18:33:21,417 INFO L87 Difference]: Start difference. First operand 91 states and 117 transitions. Second operand 26 states. [2020-10-12 18:33:22,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:33:22,301 INFO L93 Difference]: Finished difference Result 178 states and 234 transitions. [2020-10-12 18:33:22,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 18:33:22,301 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 230 [2020-10-12 18:33:22,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:33:22,303 INFO L225 Difference]: With dead ends: 178 [2020-10-12 18:33:22,303 INFO L226 Difference]: Without dead ends: 96 [2020-10-12 18:33:22,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352 [2020-10-12 18:33:22,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-12 18:33:22,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2020-10-12 18:33:22,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-12 18:33:22,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 121 transitions. [2020-10-12 18:33:22,311 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 121 transitions. Word has length 230 [2020-10-12 18:33:22,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:33:22,311 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 121 transitions. [2020-10-12 18:33:22,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-12 18:33:22,311 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 121 transitions. [2020-10-12 18:33:22,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-12 18:33:22,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:33:22,313 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 69, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:33:22,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 18:33:22,314 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:33:22,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:33:22,314 INFO L82 PathProgramCache]: Analyzing trace with hash 593527487, now seen corresponding path program 23 times [2020-10-12 18:33:22,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:33:22,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148603076] [2020-10-12 18:33:22,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:33:22,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:22,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:22,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:22,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:22,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:27,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:27,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-12 18:33:27,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:33:27,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-12 18:33:27,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:27,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 18:33:27,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:33:27,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 18:33:27,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:27,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:33:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:27,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:27,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:27,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:33:27,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:27,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:33:27,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:27,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:33:27,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:33:27,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:33:27,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:27,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:33:27,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:27,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:28,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:28,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 18:33:28,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:28,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1043 [2020-10-12 18:33:28,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:28,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 18:33:28,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:28,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 18:33:28,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:28,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 18:33:28,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:28,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:28,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:29,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:29,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 18:33:29,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:29,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 986 [2020-10-12 18:33:29,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:29,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 18:33:29,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:29,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 18:33:29,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:29,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-12 18:33:29,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:29,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:29,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:30,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:30,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 18:33:30,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:30,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 983 [2020-10-12 18:33:30,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:30,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 18:33:30,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:30,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 18:33:30,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:30,977 INFO L134 CoverageAnalysis]: Checked inductivity of 7260 backedges. 2346 proven. 4692 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-12 18:33:30,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148603076] [2020-10-12 18:33:30,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:33:30,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-12 18:33:30,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922237728] [2020-10-12 18:33:30,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-12 18:33:30,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:33:30,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-12 18:33:30,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-12 18:33:30,980 INFO L87 Difference]: Start difference. First operand 94 states and 121 transitions. Second operand 27 states. [2020-10-12 18:33:31,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:33:31,893 INFO L93 Difference]: Finished difference Result 184 states and 242 transitions. [2020-10-12 18:33:31,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 18:33:31,893 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 239 [2020-10-12 18:33:31,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:33:31,894 INFO L225 Difference]: With dead ends: 184 [2020-10-12 18:33:31,894 INFO L226 Difference]: Without dead ends: 99 [2020-10-12 18:33:31,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2020-10-12 18:33:31,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-12 18:33:31,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2020-10-12 18:33:31,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-12 18:33:31,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 125 transitions. [2020-10-12 18:33:31,905 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 125 transitions. Word has length 239 [2020-10-12 18:33:31,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:33:31,906 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 125 transitions. [2020-10-12 18:33:31,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-12 18:33:31,906 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 125 transitions. [2020-10-12 18:33:31,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-12 18:33:31,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:33:31,908 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 72, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:33:31,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 18:33:31,908 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:33:31,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:33:31,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1637297034, now seen corresponding path program 24 times [2020-10-12 18:33:31,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:33:31,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760812990] [2020-10-12 18:33:31,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:33:31,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:31,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:31,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:32,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:32,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:37,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:37,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-12 18:33:37,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:33:37,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-12 18:33:37,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:37,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 18:33:37,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-12 18:33:37,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 18:33:37,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:37,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:33:37,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:37,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:37,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:37,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:33:37,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:37,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:33:37,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:37,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:33:37,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:33:37,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:33:37,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:37,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:33:37,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:37,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:37,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:38,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:38,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 18:33:38,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:38,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1136 [2020-10-12 18:33:38,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:38,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 18:33:38,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:38,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 18:33:38,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:38,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-12 18:33:38,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:38,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:39,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:39,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 18:33:39,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:39,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1055 [2020-10-12 18:33:39,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:39,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 18:33:39,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:39,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 18:33:39,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:39,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-12 18:33:39,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:39,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:39,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:40,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:40,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 18:33:40,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:40,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1041 [2020-10-12 18:33:40,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:40,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 18:33:40,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:40,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 18:33:40,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:40,841 INFO L134 CoverageAnalysis]: Checked inductivity of 7899 backedges. 2556 proven. 5112 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-12 18:33:40,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760812990] [2020-10-12 18:33:40,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:33:40,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-12 18:33:40,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300180773] [2020-10-12 18:33:40,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-12 18:33:40,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:33:40,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-12 18:33:40,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-12 18:33:40,843 INFO L87 Difference]: Start difference. First operand 97 states and 125 transitions. Second operand 28 states. [2020-10-12 18:33:41,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:33:41,854 INFO L93 Difference]: Finished difference Result 190 states and 250 transitions. [2020-10-12 18:33:41,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-12 18:33:41,854 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 248 [2020-10-12 18:33:41,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:33:41,856 INFO L225 Difference]: With dead ends: 190 [2020-10-12 18:33:41,856 INFO L226 Difference]: Without dead ends: 102 [2020-10-12 18:33:41,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756 [2020-10-12 18:33:41,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-12 18:33:41,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2020-10-12 18:33:41,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-12 18:33:41,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 129 transitions. [2020-10-12 18:33:41,863 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 129 transitions. Word has length 248 [2020-10-12 18:33:41,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:33:41,863 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 129 transitions. [2020-10-12 18:33:41,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-12 18:33:41,864 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 129 transitions. [2020-10-12 18:33:41,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-12 18:33:41,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:33:41,865 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 75, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:33:41,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 18:33:41,866 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:33:41,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:33:41,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1779439201, now seen corresponding path program 25 times [2020-10-12 18:33:41,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:33:41,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658928391] [2020-10-12 18:33:41,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:33:41,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:41,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:41,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:41,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:42,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:47,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:47,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-12 18:33:47,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:33:47,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5128 [2020-10-12 18:33:47,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:47,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 18:33:47,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:33:47,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 18:33:47,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:47,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:33:47,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:47,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:47,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:47,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:33:47,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:47,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:33:47,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:47,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:33:47,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:33:47,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:33:47,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:47,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:33:47,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:47,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:48,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:48,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 18:33:48,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:48,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1181 [2020-10-12 18:33:48,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:48,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 18:33:48,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:48,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 18:33:48,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:48,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-12 18:33:48,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:48,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:48,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:49,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:49,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 18:33:49,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:49,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1143 [2020-10-12 18:33:49,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:49,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 18:33:49,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:49,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 18:33:49,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:49,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-12 18:33:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:49,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:49,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:51,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:51,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 18:33:51,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:51,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1173 [2020-10-12 18:33:51,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:51,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 18:33:51,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:51,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 18:33:51,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:51,171 INFO L134 CoverageAnalysis]: Checked inductivity of 8565 backedges. 2775 proven. 5550 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2020-10-12 18:33:51,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658928391] [2020-10-12 18:33:51,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:33:51,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-12 18:33:51,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996747262] [2020-10-12 18:33:51,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-12 18:33:51,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:33:51,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-12 18:33:51,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-12 18:33:51,173 INFO L87 Difference]: Start difference. First operand 100 states and 129 transitions. Second operand 29 states. [2020-10-12 18:33:52,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:33:52,158 INFO L93 Difference]: Finished difference Result 196 states and 258 transitions. [2020-10-12 18:33:52,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-12 18:33:52,159 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 257 [2020-10-12 18:33:52,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:33:52,160 INFO L225 Difference]: With dead ends: 196 [2020-10-12 18:33:52,160 INFO L226 Difference]: Without dead ends: 105 [2020-10-12 18:33:52,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970 [2020-10-12 18:33:52,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-12 18:33:52,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2020-10-12 18:33:52,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-12 18:33:52,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 133 transitions. [2020-10-12 18:33:52,168 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 133 transitions. Word has length 257 [2020-10-12 18:33:52,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:33:52,168 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 133 transitions. [2020-10-12 18:33:52,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-12 18:33:52,169 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 133 transitions. [2020-10-12 18:33:52,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-12 18:33:52,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:33:52,170 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 78, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:33:52,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 18:33:52,171 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:33:52,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:33:52,171 INFO L82 PathProgramCache]: Analyzing trace with hash 445456022, now seen corresponding path program 26 times [2020-10-12 18:33:52,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:33:52,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [603660709] [2020-10-12 18:33:52,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:33:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:52,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:52,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:52,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:52,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:57,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:57,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-12 18:33:57,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:33:57,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-12 18:33:57,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:57,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 18:33:57,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:33:57,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 18:33:57,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:57,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:33:57,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:57,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:57,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:57,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:33:57,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:57,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:33:57,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:57,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:33:57,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:33:57,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:33:57,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:57,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:33:57,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:57,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:58,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:58,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 18:33:58,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:58,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1276 [2020-10-12 18:33:58,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:58,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 18:33:58,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:58,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 18:33:58,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:59,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-12 18:33:59,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:59,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:59,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:00,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:00,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 18:34:00,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:34:00,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1362 [2020-10-12 18:34:00,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:00,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 18:34:00,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:00,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 18:34:00,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:00,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-12 18:34:00,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:00,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:00,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:01,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:01,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 18:34:01,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:34:01,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1447 [2020-10-12 18:34:01,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:01,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 18:34:01,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:01,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 18:34:01,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:01,993 INFO L134 CoverageAnalysis]: Checked inductivity of 9258 backedges. 3003 proven. 6006 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2020-10-12 18:34:01,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [603660709] [2020-10-12 18:34:01,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:34:01,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-12 18:34:01,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094387054] [2020-10-12 18:34:01,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-12 18:34:01,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:34:01,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-12 18:34:01,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-12 18:34:01,995 INFO L87 Difference]: Start difference. First operand 103 states and 133 transitions. Second operand 30 states. [2020-10-12 18:34:03,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:34:03,105 INFO L93 Difference]: Finished difference Result 202 states and 266 transitions. [2020-10-12 18:34:03,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-12 18:34:03,106 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 266 [2020-10-12 18:34:03,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:34:03,107 INFO L225 Difference]: With dead ends: 202 [2020-10-12 18:34:03,107 INFO L226 Difference]: Without dead ends: 108 [2020-10-12 18:34:03,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192 [2020-10-12 18:34:03,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-12 18:34:03,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2020-10-12 18:34:03,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-12 18:34:03,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 137 transitions. [2020-10-12 18:34:03,120 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 137 transitions. Word has length 266 [2020-10-12 18:34:03,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:34:03,120 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 137 transitions. [2020-10-12 18:34:03,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-12 18:34:03,120 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 137 transitions. [2020-10-12 18:34:03,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-10-12 18:34:03,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:34:03,122 INFO L422 BasicCegarLoop]: trace histogram [81, 81, 81, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:34:03,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 18:34:03,123 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:34:03,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:34:03,123 INFO L82 PathProgramCache]: Analyzing trace with hash 393238655, now seen corresponding path program 27 times [2020-10-12 18:34:03,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:34:03,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130041107] [2020-10-12 18:34:03,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:34:03,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:03,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:03,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:03,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:03,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:08,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:08,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 18:34:08,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:34:08,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5129 [2020-10-12 18:34:08,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:08,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 18:34:08,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:34:08,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-12 18:34:08,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:08,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:34:08,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:08,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:08,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:08,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:34:08,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:08,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:34:08,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:08,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:34:08,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:34:08,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:34:08,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:08,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:34:08,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:08,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:09,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:09,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 18:34:09,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:09,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1451 [2020-10-12 18:34:09,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:09,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 18:34:09,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:09,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-12 18:34:09,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:10,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 18:34:10,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:10,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:10,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:11,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:11,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 18:34:11,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:34:11,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1553 [2020-10-12 18:34:11,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:11,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 18:34:11,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:11,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-12 18:34:11,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:11,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-12 18:34:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:11,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:11,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:13,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:13,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 18:34:13,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:34:13,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1529 [2020-10-12 18:34:13,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:13,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 18:34:13,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:13,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-12 18:34:13,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:13,568 INFO L134 CoverageAnalysis]: Checked inductivity of 9978 backedges. 3240 proven. 6480 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2020-10-12 18:34:13,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130041107] [2020-10-12 18:34:13,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:34:13,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-12 18:34:13,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527741467] [2020-10-12 18:34:13,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-12 18:34:13,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:34:13,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-12 18:34:13,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-12 18:34:13,573 INFO L87 Difference]: Start difference. First operand 106 states and 137 transitions. Second operand 31 states. [2020-10-12 18:34:14,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:34:14,738 INFO L93 Difference]: Finished difference Result 208 states and 274 transitions. [2020-10-12 18:34:14,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-12 18:34:14,739 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 275 [2020-10-12 18:34:14,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:34:14,740 INFO L225 Difference]: With dead ends: 208 [2020-10-12 18:34:14,741 INFO L226 Difference]: Without dead ends: 111 [2020-10-12 18:34:14,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2020-10-12 18:34:14,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-12 18:34:14,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2020-10-12 18:34:14,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-12 18:34:14,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 141 transitions. [2020-10-12 18:34:14,748 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 141 transitions. Word has length 275 [2020-10-12 18:34:14,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:34:14,749 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 141 transitions. [2020-10-12 18:34:14,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-12 18:34:14,749 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 141 transitions. [2020-10-12 18:34:14,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-10-12 18:34:14,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:34:14,751 INFO L422 BasicCegarLoop]: trace histogram [84, 84, 84, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:34:14,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 18:34:14,751 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:34:14,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:34:14,752 INFO L82 PathProgramCache]: Analyzing trace with hash 2075517110, now seen corresponding path program 28 times [2020-10-12 18:34:14,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:34:14,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544102460] [2020-10-12 18:34:14,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:34:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:14,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:14,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:14,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:14,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:19,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:19,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-12 18:34:19,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:34:19,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 18:34:19,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:19,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 18:34:19,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:34:19,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 18:34:19,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:19,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:34:19,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:19,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:19,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:19,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:34:19,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:19,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:34:19,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:19,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:34:19,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:34:19,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:34:19,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:19,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:34:19,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:19,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:21,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:21,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 18:34:21,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:21,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1620 [2020-10-12 18:34:21,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:21,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 18:34:21,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:21,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 18:34:21,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:21,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-12 18:34:21,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:22,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:22,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:23,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:23,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 18:34:23,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:34:23,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1780 [2020-10-12 18:34:23,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:23,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 18:34:23,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:23,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 18:34:23,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:23,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-12 18:34:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:23,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:23,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:25,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:25,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 18:34:25,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:34:25,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1722 [2020-10-12 18:34:25,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:25,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 18:34:25,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:25,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 18:34:25,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:25,619 INFO L134 CoverageAnalysis]: Checked inductivity of 10725 backedges. 3486 proven. 6972 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2020-10-12 18:34:25,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544102460] [2020-10-12 18:34:25,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:34:25,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-12 18:34:25,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919330772] [2020-10-12 18:34:25,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-12 18:34:25,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:34:25,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-12 18:34:25,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-12 18:34:25,621 INFO L87 Difference]: Start difference. First operand 109 states and 141 transitions. Second operand 32 states. [2020-10-12 18:34:26,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:34:26,829 INFO L93 Difference]: Finished difference Result 214 states and 282 transitions. [2020-10-12 18:34:26,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-12 18:34:26,830 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 284 [2020-10-12 18:34:26,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:34:26,832 INFO L225 Difference]: With dead ends: 214 [2020-10-12 18:34:26,832 INFO L226 Difference]: Without dead ends: 114 [2020-10-12 18:34:26,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1395, Invalid=2265, Unknown=0, NotChecked=0, Total=3660 [2020-10-12 18:34:26,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-12 18:34:26,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 112. [2020-10-12 18:34:26,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-12 18:34:26,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 145 transitions. [2020-10-12 18:34:26,841 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 145 transitions. Word has length 284 [2020-10-12 18:34:26,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:34:26,841 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 145 transitions. [2020-10-12 18:34:26,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-12 18:34:26,841 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 145 transitions. [2020-10-12 18:34:26,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-12 18:34:26,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:34:26,843 INFO L422 BasicCegarLoop]: trace histogram [87, 87, 87, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:34:26,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 18:34:26,844 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:34:26,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:34:26,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1242025823, now seen corresponding path program 29 times [2020-10-12 18:34:26,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:34:26,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031438225] [2020-10-12 18:34:26,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:34:26,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:26,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:26,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:26,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:27,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:31,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:31,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 305 [2020-10-12 18:34:31,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:34:31,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-12 18:34:31,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:31,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 18:34:31,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-12 18:34:31,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-12 18:34:31,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:31,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:34:31,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:31,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:31,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:31,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:34:31,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:31,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:34:31,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:31,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:34:31,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:34:31,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:34:31,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:31,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:34:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:31,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:31,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:33,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:33,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-12 18:34:33,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:34:33,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1733 [2020-10-12 18:34:33,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:33,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 18:34:33,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:33,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-12 18:34:33,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:34,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-12 18:34:34,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:34,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:36,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:36,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-12 18:34:36,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:36,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1784 [2020-10-12 18:34:36,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:36,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 18:34:36,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:36,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-12 18:34:36,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:36,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-12 18:34:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:36,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:36,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:37,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:37,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-12 18:34:37,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:34:37,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1812 [2020-10-12 18:34:37,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:37,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 18:34:37,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:37,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-12 18:34:37,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:38,003 INFO L134 CoverageAnalysis]: Checked inductivity of 11499 backedges. 3741 proven. 7482 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2020-10-12 18:34:38,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031438225] [2020-10-12 18:34:38,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:34:38,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-12 18:34:38,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140536260] [2020-10-12 18:34:38,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-12 18:34:38,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:34:38,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-12 18:34:38,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 18:34:38,005 INFO L87 Difference]: Start difference. First operand 112 states and 145 transitions. Second operand 33 states. [2020-10-12 18:34:39,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:34:39,278 INFO L93 Difference]: Finished difference Result 220 states and 290 transitions. [2020-10-12 18:34:39,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-12 18:34:39,278 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 293 [2020-10-12 18:34:39,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:34:39,280 INFO L225 Difference]: With dead ends: 220 [2020-10-12 18:34:39,280 INFO L226 Difference]: Without dead ends: 117 [2020-10-12 18:34:39,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2020-10-12 18:34:39,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-12 18:34:39,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 115. [2020-10-12 18:34:39,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-12 18:34:39,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 149 transitions. [2020-10-12 18:34:39,289 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 149 transitions. Word has length 293 [2020-10-12 18:34:39,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:34:39,290 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 149 transitions. [2020-10-12 18:34:39,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-12 18:34:39,290 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 149 transitions. [2020-10-12 18:34:39,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-12 18:34:39,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:34:39,292 INFO L422 BasicCegarLoop]: trace histogram [90, 90, 90, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:34:39,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 18:34:39,292 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:34:39,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:34:39,293 INFO L82 PathProgramCache]: Analyzing trace with hash 482155222, now seen corresponding path program 30 times [2020-10-12 18:34:39,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:34:39,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705029663] [2020-10-12 18:34:39,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:34:39,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:39,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:39,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:39,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:39,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:44,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:44,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-12 18:34:44,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:34:44,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5126 [2020-10-12 18:34:44,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:44,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 18:34:44,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:34:44,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-12 18:34:44,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:44,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:34:44,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:44,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:44,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:44,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:34:44,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:44,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:34:44,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:44,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:34:44,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:34:44,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:34:44,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:44,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:34:44,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:44,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:46,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:46,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-12 18:34:46,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:46,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1857 [2020-10-12 18:34:46,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:46,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 18:34:46,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:46,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-12 18:34:46,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:46,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-12 18:34:46,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:47,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:47,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:48,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:48,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-12 18:34:48,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:34:48,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1962 [2020-10-12 18:34:48,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:48,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 18:34:48,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:48,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-12 18:34:48,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:48,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-12 18:34:48,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:49,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:49,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking...